{"id":2342,"date":"2026-05-25T22:02:22","date_gmt":"2026-05-25T22:02:22","guid":{"rendered":"https:\/\/chemicaladditives.com.mx\/?p=2342"},"modified":"2026-05-25T22:40:38","modified_gmt":"2026-05-25T22:40:38","slug":"resina-emulsion-plastisol-guia-seleccion","status":"publish","type":"post","link":"https:\/\/chemicaladditives.com.mx\/en\/resin-emulsion-plastisol-selection-guide\/","title":{"rendered":"Plastisol emulsion resin: how to choose the right grade for your application"},"content":{"rendered":"<p>If your plant processes plastisol\u2014whether for coated tarpaulins, wallpaper, dipping gloves, vinyl inks, or metal lid gaskets\u2014emulsion PVC resin is not an interchangeable commodity. It defines more than just the 60% standard for your formulation&#039;s behavior: paste viscosity, gel temperature, springback, surface defects, and finished product shelf life.<\/p>\n<p>This guide covers how to choose the right one, what signs to watch for when something starts to go wrong, and when it&#039;s a good idea to switch providers.<\/p>\n<h2>What makes emulsion resin different from S-PVC<\/h2>\n<p>Polyvinyl chloride is produced industrially via three methods: suspension (S-PVC), bulk (M-PVC), and emulsion (E-PVC). The difference is not only in the process: it produces particles with radically different morphology, size, and surface chemistry.<\/p>\n<table>\n<thead>\n<tr>\n<th>Feature<\/th>\n<th>S-PVC<\/th>\n<th>E-PVC<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Particle size<\/td>\n<td>100\u2013180 \u00b5m, porous grain<\/td>\n<td>0.1\u20131 \u00b5m primary, agglomerated by spray drying into spheres of 20\u201360 \u00b5m<\/td>\n<\/tr>\n<tr>\n<td>Plasticizer absorption<\/td>\n<td>By internal porosity (dry-blend)<\/td>\n<td>By surface wetting (liquid paste)<\/td>\n<\/tr>\n<tr>\n<td>Polymerization waste<\/td>\n<td>Bass (suspension agent)<\/td>\n<td>Significant (anionic emulsifiers)<\/td>\n<\/tr>\n<tr>\n<td>Typical application<\/td>\n<td>Rigid and flexible composites processed in a dry process<\/td>\n<td>Plastisols, organosols, paste coatings<\/td>\n<\/tr>\n<tr>\n<td>Clarity \/ electrical resistivity<\/td>\n<td>High<\/td>\n<td>Reduced by waste<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The practical consequence is straightforward: only E-PVC can form a stable plastisol because its submicron particle size allows the plasticizer to surround it without penetrating it during resting. S-PVC, being porous, would absorb the plasticizer immediately and form a dry blend, not a paste. M-PVC also doesn&#039;t work as a paste due to its dense, non-porous grain.<\/p>\n<p>This same property\u2014surface wetting\u2014explains why plastisol gels when heated: the temperature weakens the surfactant barrier, the plasticizer penetrates the particle, and the mass fuses into a continuous film. All plastisol engineering revolves around this phenomenon.<\/p>\n<h2>The K-value in paste resin: why it matters more than in S-PVC<\/h2>\n<p>The K-value (Fikentscher) is an indirect measure of the polymer&#039;s molecular weight. In S-PVC, the K-value primarily determines the mechanical strength of the final compound and its melting temperature. In E-PVC for paste, the K-value dictates something more visible and operationally critical: the paste&#039;s viscosity and gelation temperature.<\/p>\n<p>Typical ranges in emulsion resins:<\/p>\n<ul>\n<li><strong>K 65\u201370:<\/strong> Low paste viscosity, gels at moderate temperatures, lower final properties. Used in inks, adhesives, and applications where layer thickness is minimal.<\/li>\n<li><strong>K 71\u201373:<\/strong> Balanced. Good flow, controlled gel, acceptable properties. The workhorse for wallpaper, thin coatings, and dipping with extender.<\/li>\n<li><strong>K 75\u201378:<\/strong> Greater mechanical strength of the gel, better elastic recovery, higher paste viscosity. Recommended for textile coatings, tarpaulins, upholstery, and applications subject to repeated flexing.<\/li>\n<\/ul>\n<p>Two grades with similar K values but from different manufacturers can behave differently due to particle size distribution, agglomerated sphere morphology, and residual emulsifying system. The K value is necessary but not sufficient to predict performance.<\/p>\n<blockquote>\n<p>\u26a0 <strong>Subtle but important:<\/strong> Lowering the K value to correct high paste viscosity is a tempting solution, but it comes at a cost in final properties\u2014lower elongation, worse resistance to thermal aging, and reduced elastic recovery. Before lowering K, it&#039;s worth exploring the following:<\/p>\n<ul>\n<li>Adjust the main resin \/ extender resin ratio<\/li>\n<li>Change the plasticizer system (a plasticizer plus solvent for low paste viscosity without affecting the resin) \u2014 <a href=\"https:\/\/chemicaladditives.com.mx\/en\/plastificantes\/\">See plasticizers<\/a><\/li>\n<li>Check the contents and type of diluent<\/li>\n<li>Check the storage temperature of the pasta<\/li>\n<\/ul>\n<\/blockquote>\n<h2>How to choose E-PVC resin according to your application<\/h2>\n<h3>Textile coatings (tarpaulins, upholstery, automotive, geomembrane)<\/h3>\n<p>This is the most demanding application from the perspective of the final gel. The plastisol film must survive repeated flexing, UV exposure, thermal cycling, and, in automotive applications, low-emission (fogging) requirements.<\/p>\n<ul>\n<li><strong>What the resin needs:<\/strong> High mechanical strength of the gel, good elastic recovery, uniform gelation without defects.<\/li>\n<li><strong>Recommendation:<\/strong> High K grade (75\u201377). For reference, the <span translate=\"no\">Hanwha<\/span> <span translate=\"no\">KH-10<\/span> (K=76, micro-suspension, semi-matte finish) and the <span translate=\"no\">KH-60<\/span> (K=76, micro-suspension, gloss finish) perform well in this niche \u2014 both distributed by Chemical Additives of Mexico. They offer excellent mechanical properties, low water absorption, high electrical resistance, and good viscosity stability in storage, with slight dilatancy at high shear that favors spread coating on roller or knife-over-roll machines.<\/li>\n<\/ul>\n<h3>Wallpaper and wallcovering<\/h3>\n<p>Thin layer application with high pigment load and gelation requirement at moderate temperatures (160\u2013180 \u00b0C) to avoid damaging the cellulosic substrate.<\/p>\n<ul>\n<li><strong>What the resin needs:<\/strong> moderate paste viscosity, efficient gelling at low temperatures, good pigment absorption without destabilizing the paste.<\/li>\n<li><strong>Recommendation:<\/strong> middle grade K (71\u201373). The <span translate=\"no\">Hanwha<\/span> <span translate=\"no\">KM-60<\/span> (K=71, micro-suspension) \u2014 distributed by Chemical Additives of Mexico \u2014 is a balanced option for non-foamed wallpaper and top coats. For foamed wallpaper (chemical foam), where a system with pseudoplastic flow and optimized foaming properties is needed, the specific grades are <span translate=\"no\">Hanwha<\/span> <span translate=\"no\">EM3090<\/span> (K=69, classical fine particle emulsion) and <span translate=\"no\">KL-31<\/span> (K=66, low molecular weight microsuspension) \u2014 both available through Chemical Additives upon request. Both are designed to produce fine, closed, and uniform cells, with good compatibility with kickers (ZnO), ADCA, and fillers.<\/li>\n<\/ul>\n<h3>Dipping (gloves, tool covers, inflatable toys, electric thimbles)<\/h3>\n<p>The plastisol remains in a tank at room temperature for several hours and must maintain a constant viscosity. The part is formed by immersion and curing, so deaeration of the paste and thickness retention are critical.<\/p>\n<ul>\n<li><strong>What the resin needs:<\/strong> viscosity stability at 24\u201372 hours, low tendency to separate, rapid deaeration.<\/li>\n<li><strong>Recommendation:<\/strong> for thin vinyl gloves with medium-high mechanical properties, <span translate=\"no\">Hanwha<\/span> <span translate=\"no\">KH-31G<\/span> (K=75, high molecular weight microsuspension) and <span translate=\"no\">KM-31<\/span> (K=70-73, medium molecular weight microsuspension) are the grades specifically formulated for this use\u2014available through Chemical Additives of Mexico upon request. Both offer low gel temperature, excellent deaeration, high transparency, and good release. For applications where viscosity adjustment with extender is required, a base of <span translate=\"no\">KM-60<\/span> with 15\u201325% low K extender resin is a proven alternative.<\/li>\n<\/ul>\n<h3>Vinyl inks, adhesives and screen printing<\/h3>\n<p>It requires very low viscosities (sometimes below 3,000 cP Brookfield) and a high pigment or adhesive resin load.<\/p>\n<ul>\n<li><strong>What the resin needs:<\/strong> inherently low viscosity, compatibility with plasticizers and thinners.<\/li>\n<li><strong>Recommendation:<\/strong> Micro-suspension (M-PVC processed for paste) or heavy blend of E-PVC + extender. The micro-suspension provides lower paste viscosity at the same solids content and is the technically superior option for demanding inks. In the portfolio <span translate=\"no\">Hanwha<\/span>, the <span translate=\"no\">KL-31<\/span> (K=66, low MW micro-suspension) is the specific option for this niche \u2014 available through Chemical Additives upon request.<\/li>\n<\/ul>\n<h3>Plastisol for resale<\/h3>\n<p>Companies that formulate plastisol for sale to third parties rely on reproducible batch-to-batch production. Here, supplier consistency is as important as nominal specifications.<\/p>\n<h2>The silent problem: batch-to-batch variability and manufacturer process changes<\/h2>\n<p>This is the conversation the industry doesn&#039;t have in public, but that all experienced formulators know: when a resin manufacturer moves production from one plant to another, changes drying equipment, adjusts the emulsifying system, or modifies the spray drying process, the behavior of the resin changes\u2014even though the technical data sheets continue to say the same thing.<\/p>\n<p>The symptoms are consistent:<\/p>\n<ul>\n<li>Paste viscosity 10\u201330% higher or lower than the usual batch<\/li>\n<li>Gelation temperature shifted 5\u201310 \u00b0C<\/li>\n<li>Appearance of fish eyes that were not there before<\/li>\n<li>Premature yellowing during freezing<\/li>\n<li>Loss of adhesion to the substrate<\/li>\n<li>Tendency to separation of the paste during storage<\/li>\n<\/ul>\n<p>If your plant has been using the same grade from the same manufacturer for years and suddenly recent batches are giving you problems that your plasticizer, stabilizer, and equipment haven&#039;t caused, the resin has probably changed even if the technical data sheet says otherwise.<\/p>\n<h3>To do<\/h3>\n<ul>\n<li><strong>Request batch-by-batch testing from the supplier:<\/strong> Brookfield viscosity at time zero and 24 hours (or 7 days for dipping), emulsifier residue, gel temperature by DSC or by own gel-onset method.<\/li>\n<li><strong>Always keep a qualified alternative resin on hand.<\/strong> Failure to qualify a backup is the number one cause of unanticipated production stoppages in plastisol plants.<\/li>\n<li><strong>Evaluate suppliers with a stable supply chain.<\/strong> Manufacturers that maintain production in the same plant for years \u2014 such as <span translate=\"no\">Hanwha<\/span> from Korea \u2014 they tend to deliver more consistent batches than those that have diversified production across regions.<\/li>\n<li><strong>Document the behavior of each batch.<\/strong> A simple logbook with initial viscosity, gelling, and production appearance allows drift to be detected before it becomes a crisis.<\/li>\n<\/ul>\n<h2>Emulsion resin, micro-suspension and extender: three different routes to a PVC paste<\/h2>\n<p>The colloquial term \u201cpaste resin\u201d encompasses three technically distinct families. They share a fundamental property\u2014they can disperse in plasticizer without absorbing it during standby, and form (or contribute to the formation of) a plastisol that gels upon heating\u2014but their polymerization chemistry, morphology, and process behavior are different. Confusing them or treating them as interchangeable is one of the most common causes of formulations that \u201cdon\u2019t turn out as expected.\u201d.<\/p>\n<h3>Classic emulsion resin (E-PVC)<\/h3>\n<p>It polymerizes via conventional emulsion polymerization: the vinyl chloride monomer (VCM) is dispersed in water using anionic surfactants\u2014typically alkyl sulfates or sulfonates\u2014and the reaction is initiated with water-soluble persulfates. Polymerization occurs within the surfactant micelles, generating primary particles of 0.1 to 1 \u00b5m, which are subsequently agglomerated into porous spheres of 20\u201360 \u00b5m by spray drying.<\/p>\n<p>What arrives at the plant are these agglomerates, not the primary particles. The mixer&#039;s job is to partially break down these agglomerates in the plasticizer to release the submicron particles that give the paste its characteristic behavior.<\/p>\n<p>Technical consequences of the process:<\/p>\n<ul>\n<li><strong>Significant residues of anionic emulsifiers<\/strong> on the surface of the particle \u2192 greater hygroscopicity of the final gel, lower electrical resistivity, greater tendency to form foam in pastes with intense agitation or imperfect vacuum.<\/li>\n<li><strong>Relatively wide particle size distribution,<\/strong> which translates into an intermediate-high paste viscosity at the same solids content.<\/li>\n<li><strong>Excellent mechanical properties of the gel when using high grade K:<\/strong> high tensile strength, good elastic recovery, resistance to repeated bending.<\/li>\n<\/ul>\n<p>Preferred uses: textile coatings (tarpaulins, upholstery), wallpaper, demanding dips, geomembrane \u2014 in general, applications where the mechanical properties of the final gel are more important than the viscosity of the paste. In the portfolio <span translate=\"no\">Hanwha<\/span>, the <span translate=\"no\">EM3090<\/span> (K=69) is the classic emulsion resin representative of this family, optimized for high-build chemical foams, synthetic leather and airless spray sealants \u2014 available through Chemical Additives of Mexico upon request.<\/p>\n<h3>Microsuspension resin (MS-PVC for paste)<\/h3>\n<p>It polymerizes via a route intermediate between suspension and emulsion. The monomer is mechanically homogenized with a surfactant system\u2014usually non-ionic or a mixture of non-ionic surfactant and co-surfactant\u2014before initiating the reaction, and organosoluble initiators (organic peroxides such as lauroyl peroxide or peroxydicarbonates), which are not water-soluble, are used. The result is a surface-stabilized monomer droplet within which polymerization occurs.<\/p>\n<p>The resulting particle has a narrower distribution, a more spherical and uniform morphology, and less anionic residue on the surface than classical E-PVC.<\/p>\n<p>Technical consequences of the process:<\/p>\n<ul>\n<li><strong>Lower paste viscosity at the same solids content<\/strong> (typically 10\u201330% less) for two reasons: the narrow distribution allows for better particle packing, and the spherical geometry reduces internal friction between particles during flow.<\/li>\n<li><strong>Lower surface ionic residue<\/strong> \u2192 improved electrical resistivity of the gel, lower water absorption, better compatibility with ion-sensitive substrates (electrical films, metal contact, coatings for flexible circuit boards).<\/li>\n<li><strong>Improved viscosity stability during storage.<\/strong> Pastes with MS-PVC tend to drift less in viscosity over days or weeks in the tank.<\/li>\n<li><strong>Unit cost usually higher<\/strong> than the equivalent classic E-PVC.<\/li>\n<\/ul>\n<blockquote>\n<p>\u26a0 <strong>Subtle:<\/strong> Microsuspension isn&#039;t automatically &quot;better&quot;\u2014it&#039;s different. For a thick textile coating where the gel&#039;s mechanical properties are paramount, E-PVC K76 still offers a better cost-performance ratio. Microsuspension shines when paste viscosity and surface purity are the dominant criteria.<\/p>\n<\/blockquote>\n<p>Preferred uses: low viscosity, high pigment load vinyl inks, thin coatings, electrical applications (gaskets, seals, low voltage cable coatings), sensitive contact grades (medical, premium food). <span translate=\"no\">Hanwha<\/span> Chemical Additives de M\u00e9xico offers a complete family of microsuspension resins that it distributes or imports upon request, covering the entire spectrum of molecular weights and applications: <span translate=\"no\">KH-10<\/span> y <span translate=\"no\">KH-60<\/span> (K=76, high MW, for demanding coatings), <span translate=\"no\">KH-31G<\/span> (K=75, high MW, dedicated to thin vinyl gloves), <span translate=\"no\">KM-60<\/span> (K=71, medium MW, for transparent coatings and top coats), <span translate=\"no\">KM-31<\/span> (K=70-73, medium MW, also for gloves and slush molding) and <span translate=\"no\">KL-31<\/span> (K=66, low MW, for chemical foams and inks).<\/p>\n<h3>Extender resin (extender blending resin)<\/h3>\n<p>This is where the terminology in the market is most confusing. Extender resin is not a paste resin in the strict sense: it is conventional S-PVC polymerized by suspension, with two differences compared to regular S-PVC: a very low K value (typically K 55\u201362) and a controlled grain size distribution so that it disperses in the plasticizer without precipitating too quickly during the paste&#039;s resting period. <a href=\"https:\/\/chemicaladditives.com.mx\/en\/resina-de-pvc\/\">See PVC resin<\/a>.<\/p>\n<p>This has a critical implication: on its own, it does NOT form a stable plastisol. If you try to formulate a paste with 100% extender resin and plasticizer, the porous grain of S-PVC will absorb the plasticizer during rest, resulting in a hydrated dry blend, not a paste. The extender only works when blended with E-PVC or in a micro-suspension.<\/p>\n<p>Technical function in the blend:<\/p>\n<ul>\n<li>It occupies solid volume in the paste without contributing to viscosity as more of the main resin would.<\/li>\n<li>It reduces the total cost of the formulation (the extender is significantly cheaper than E-PVC or microsuspension).<\/li>\n<li>It allows achieving operable paste viscosities with high solids content.<\/li>\n<\/ul>\n<p>What is sacrificed by adding extend:<\/p>\n<ul>\n<li>Lower mechanical resistance of the final gel (shorter chains, less entanglement).<\/li>\n<li>Reduced elastic recovery and resistance to repeated bending.<\/li>\n<li>Higher gelling temperature (sometimes convenient, sometimes not).<\/li>\n<li>Poorer retention of properties after thermal aging.<\/li>\n<\/ul>\n<p>Typical usage levels: 15\u201330% of the total resin mass. Above 35\u201340%, gel quality typically drops to unacceptable levels for most applications.<\/p>\n<h3>Quick comparison<\/h3>\n<table>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th>Classic E-PVC<\/th>\n<th>Microsuspension<\/th>\n<th>Extend<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Process<\/td>\n<td>Emulsion with anionic surfactant, water-soluble initiator<\/td>\n<td>Microsuspension with non-ionic surfactant, organosoluble initiator<\/td>\n<td>Conventional suspension, low K<\/td>\n<\/tr>\n<tr>\n<td>Primary particle<\/td>\n<td>0.1\u20131 \u00b5m<\/td>\n<td>0.5\u20132 \u00b5m<\/td>\n<td>30\u2013100 \u00b5m (porous)<\/td>\n<\/tr>\n<tr>\n<td>Does it form plastisol on its own?<\/td>\n<td>Yeah<\/td>\n<td>Yeah<\/td>\n<td>No<\/td>\n<\/tr>\n<tr>\n<td>Relative paste viscosity<\/td>\n<td>Medium-high<\/td>\n<td>Low-medium<\/td>\n<td>N\/A solo<\/td>\n<\/tr>\n<tr>\n<td>Emulsifying residue<\/td>\n<td>High<\/td>\n<td>Low<\/td>\n<td>Minimum<\/td>\n<\/tr>\n<tr>\n<td>Electrical resistivity of the gel<\/td>\n<td>Reduced<\/td>\n<td>Good<\/td>\n<td>Good (in blend)<\/td>\n<\/tr>\n<tr>\n<td>Hygroscopicity<\/td>\n<td>High<\/td>\n<td>Average<\/td>\n<td>Low<\/td>\n<\/tr>\n<tr>\n<td>Mechanical properties of the gel<\/td>\n<td>Good to excellent (high K)<\/td>\n<td>Hello good<\/td>\n<td>N\/A solo<\/td>\n<\/tr>\n<tr>\n<td>Relative cost<\/td>\n<td>Base of reference<\/td>\n<td>+20 to +40%<\/td>\n<td>-30 to -50%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>How they are combined in the plant<\/h3>\n<p>The actual decisions on the factory floor are almost never simply &quot;use only E-PVC&quot; or &quot;use only microsuspension.&quot; They are combinations that balance properties, viscosity, and cost depending on the application.<\/p>\n<ul>\n<li><strong>80% E-PVC K71 + 20% extend K58:<\/strong> Dipping paste for industrial gloves. Stable viscosity in tank, acceptable mechanical properties, low cost control.<\/li>\n<li><strong>70% E-PVC K76 + 30% extend K58:<\/strong> Textile coating for tarpaulins. Viscosity operable on a roller machine, mechanically robust gel.<\/li>\n<li><strong>60% microsuspension + 40% extend:<\/strong> Vinyl screen printing inks. Very low viscosity, high pigment holding capacity, uniform drying.<\/li>\n<li><strong>100% microsuspension:<\/strong> Premium electrical or contact applications where ionic residue is unacceptable.<\/li>\n<li><strong>100% E-PVC K76:<\/strong> demanding coatings where the final mechanical property of the gel takes precedence over everything else.<\/li>\n<\/ul>\n<blockquote>\n<p>\u26a0 <strong>Subtle:<\/strong> When two resin types are combined, the individual data sheets do not average linearly. The paste viscosity of the blend may be lower than the average (packing effect), the gel temperature may shift subtly, and the paste stability may improve or worsen depending on the compatibility of the residual surfactant systems. Any new formulation with a blend requires testing, not data sheet calculations.<\/p>\n<\/blockquote>\n<p>Chemical Additives de M\u00e9xico distributes the complete portfolio of paste resins <span translate=\"no\">Hanwha<\/span> \u2014 classic emulsion, microsuspension and extender resins \u2014 for formulators who are exploring these alternatives or who need to optimize an existing formulation.<\/p>\n<h2>Countertypes: how to migrate from commonly used paste resins in Mexico to alternatives <span translate=\"no\">Hanwha<\/span><\/h2>\n<p>The most commonly used paste resins in the Mexican market come from <span translate=\"no\">Mexichem<\/span> (part of the Orbia Group) under two long-standing commercial lines that remain active in the market: IZTAVIL (homopolymer emulsion resins for plastisol and organosol) and PRIMEX (homopolymer dispersion resins of high molecular weight). The following table shows the technical counterparts in the portfolio. <span translate=\"no\">Hanwha<\/span> distributed by Chemical Additives:<\/p>\n<table>\n<thead>\n<tr>\n<th>Resin <span translate=\"no\">Mexichem<\/span><\/th>\n<th>Process<\/th>\n<th>K<\/th>\n<th>Typical application<\/th>\n<th>Countertype <span translate=\"no\">Hanwha<\/span> (microsuspension)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span translate=\"no\">Iztavil P-410<\/span><\/td>\n<td>Homopolymer emulsion<\/td>\n<td>74.5<\/td>\n<td>Plastisol with excellent processability, good foaming properties, good mechanical properties, and low fogging\u2014recommended for automotive synthetic leather. Also applicable to tarpaulins (truck covers), conveyor belts, molded products, wallpaper, and footwear.<\/td>\n<td><span translate=\"no\">KH-10<\/span> (K=76, micro-suspension, high clarity, semi-matte finish, excellent gel mechanics) or <span translate=\"no\">KH-60<\/span> (K=76, micro-suspension, high gloss finish, high electrical resistivity). For foamed applications, supplement with <span translate=\"no\">KL-31<\/span> (K=66, low MW microsuspension especially for chemical foams)<\/td>\n<\/tr>\n<tr>\n<td><span translate=\"no\">Iztavil P-440<\/span><\/td>\n<td>Homopolymer emulsion<\/td>\n<td>74.5<\/td>\n<td>Plastisols and organosols, fabric coatings, high-gloss products, vinyl flooring top coat, clear coatings. Good adhesion to metallic substrates, low water absorption, low odor in the finished product<\/td>\n<td><span translate=\"no\">KH-10<\/span> (K=76, micro-suspension, high clarity, semi-matte finish, excellent gel mechanics) or <span translate=\"no\">KH-60<\/span> (K=76, micro-suspension, high gloss finish, high electrical resistivity)<\/td>\n<\/tr>\n<tr>\n<td><span translate=\"no\">Primex 121<\/span><\/td>\n<td>Homopolymer dispersion, high MW<\/td>\n<td>77<\/td>\n<td>Rotational molding, dip and pouring, knife or roller coating, spray coating, sealants and patching compounds, crown and bottle cap seals, general-purpose plastisols. ASTM D-5-34 classification, easy incorporation<\/td>\n<td><span translate=\"no\">KH-10<\/span> o <span translate=\"no\">KH-60<\/span> (K=76, microsuspension, direct countertype due to high molecular weight, better rheology, better deaeration, lower hygroscopicity)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<blockquote>\n<p>\u26a0 <strong>Note on nomenclature:<\/strong> In Mexico, <span translate=\"no\">Mexichem<\/span> markets its paste resins under the historical names <span translate=\"no\">Iztavil<\/span> (P-410, P-440) and <span translate=\"no\">Primex 121<\/span>, currently available on the market. Do not confuse <span translate=\"no\">Primex 121<\/span> (dispersion resin for plastisol, K=77) with <span translate=\"no\">PRIMEX PVC 440<\/span> o <span translate=\"no\">PVC 450<\/span>, These are completely different products: they are K=66 suspension resins for thermoplastic processing (pipes, profiles, calendering), NOT applicable to plastisol processes.<\/p>\n<\/blockquote>\n<h3><span translate=\"no\">Hanwha<\/span> <span translate=\"no\">EM3090<\/span>: the option <span translate=\"no\">Hanwha<\/span> of classic emulsion K medium<\/h3>\n<p><span translate=\"no\">Mexichem<\/span> It does not currently market a paste resin in the mid-K range (67\u201370) in Mexico; its portfolio <span translate=\"no\">Iztavil<\/span>\/<span translate=\"no\">Primex<\/span> It is concentrated in high K (74\u201377). For Mexican formulators who currently use medium K paste resins imported from other manufacturers \u2014 typically <span translate=\"no\">Vinnolit<\/span> (<span translate=\"no\">E 67 ST<\/span>, <span translate=\"no\">E 68<\/span>, <span translate=\"no\">E 69 VS<\/span>), LG Chem or <span translate=\"no\">Hanwha<\/span> competitor in this range \u2014 the option <span translate=\"no\">Hanwha<\/span> equivalent is:<\/p>\n<ul>\n<li><strong><span translate=\"no\">EM3090<\/span> (K=69, classical fine particle emulsion, medium MW):<\/strong> It produces high-viscosity plastisol with high yield value at low shear, exhibiting pseudoplastic flow at high shear, and medium-to-high plasticizer levels (70\u2013100 phr). It offers excellent foaming properties with K\/Zn and Na\/Zn liquid stabilizers. It features a low viscosity aging rate, a long pot life, and minimal settling. It gels quickly and provides a semi-gloss finish.<\/li>\n<li><strong>Applications where <span translate=\"no\">EM3090<\/span> shines:<\/strong> high-thickness, closed-cell, fine-cell chemical foams, synthetic leather coatings in blends with extender resins, wallpaper foamed by rotary screen or comma coater, direct or transfer compact coatings on open fabrics, airless spray sealants for automotive underbody.<\/li>\n<\/ul>\n<h3>Critical technical notes for a successful migration<\/h3>\n<ul>\n<li><strong>The transition is not a direct 1:1.<\/strong> Even though they are K-value counterparts and suitable for the same application, two resins from different manufacturers respond differently to initial viscosity, plasticizer, gel temperature, and stabilizing systems. Any commercial change must first undergo plant qualification with a technical sample.<\/li>\n<li><strong>For <span translate=\"no\">Iztavil P-410<\/span>, <span translate=\"no\">Iztavil P-440<\/span> y <span translate=\"no\">Primex 121<\/span>, the countertype <span translate=\"no\">Hanwha<\/span> It is directly microsuspension.<\/strong> <span translate=\"no\">Hanwha<\/span> It does not produce classic emulsion resins in the K=74-77 range; its entire offering in that area is microsuspension (<span translate=\"no\">KH-10<\/span>, <span translate=\"no\">KH-60<\/span>This means that migrating from the resins <span translate=\"no\">Mexichem<\/span> from high K towards <span translate=\"no\">Hanwha<\/span> This involves a technical process upgrade: micro-suspension <span translate=\"no\">Hanwha<\/span> It has less anionic emulsifying residue, improved gel electrical resistivity, lower hygroscopicity, and better viscosity stability during storage. For wear layer applications, clear top coats, electrical coatings, gaskets in contact with metals, or plastisols that are stored for weeks before use, this upgrade typically improves performance, although the unit cost is higher.<\/li>\n<li><strong>Difference between P-410 and P-440 in the blend <span translate=\"no\">Hanwha<\/span>.<\/strong> Although they share a K=74.5, their application profiles differ: P-410 is optimized for foaming and low fogging (automotive leather, wallpaper), while P-440 is optimized for high gloss and clarity (top coats, clear coatings). In the migration to <span translate=\"no\">Hanwha<\/span>, Both are covered with <span translate=\"no\">KH-10<\/span>\/<span translate=\"no\">KH-60<\/span>, but the fine-tuning of the plasticizer, <span translate=\"no\">ESBO<\/span> and the stabilizing system will be different. For current P-410 users with an emphasis on foaming, it is advisable to complement the blend with <span translate=\"no\">KL-31<\/span> (K=66) to maintain fine cell properties. <a href=\"https:\/\/chemicaladditives.com.mx\/en\/epoxidado-de-soya-esbo\/\">See soy epoxidized (<span translate=\"no\">ESBO<\/span>)<\/a>.<\/li>\n<li><strong>For automotive applications (synthetic leather, underbody sealants).<\/strong> <span translate=\"no\">Iztavil P-410<\/span> It is the national benchmark for its low fogging. <span translate=\"no\">EM3090<\/span> y <span translate=\"no\">KL-31<\/span> They are viable countertypes; <span translate=\"no\">KM-60<\/span> y <span translate=\"no\">KH-10<\/span>\/<span translate=\"no\">KH-60<\/span> These are upgrade options. It&#039;s advisable to validate fogging using the Pinkau method or ISO 6452 before the commercial change, especially if the end customer is a Tier 1 automotive supplier with specific OEM requirements.<\/li>\n<li><strong>For applications of sealants and repairers (where <span translate=\"no\">Primex 121<\/span> (It is the traditional option).<\/strong> High MW (K=77) is critical for thickness retention in vertical sealing applications and vibration resistance. <span translate=\"no\">KH-10<\/span> (K=76) is the closest counterpart by MW; <span translate=\"no\">KH-60<\/span> It offers better gloss if the sealant requires a visible decorative finish.<\/li>\n<\/ul>\n<p>Chemical Additives provides technical samples for side-by-side qualification against your current resin, including on-site consultation for formulation adjustment during the transition.<\/p>\n<h2>Relevant regulatory aspects<\/h2>\n<p>Although regulatory issues in plastisol are usually more associated with the plasticizer than the resin, it is worth considering:<\/p>\n<ul>\n<li><strong>Food contact (FDA 21 CFR 177.1980):<\/strong> It establishes limits for residual VCM (vinyl chloride monomer) and migration. Modern emulsion resins easily comply; it&#039;s advisable to request the certificate from the supplier.<\/li>\n<li><strong>Toys (CPSIA in the USA, NOM-252-SSA1 in Mexico, EN 71-3 in Europe):<\/strong> The resin is rarely the problem; the control lies in plasticizers (restricted phthalates such as <span translate=\"no\">DEHP<\/span>, <span translate=\"no\">DBP<\/span>, <span translate=\"no\">BBP<\/span>, <span translate=\"no\">DINP<\/span> in the mouth\/children&#039;s toy), pigments and heavy metals.<\/li>\n<li><strong>Medical degree (USP Class VI):<\/strong> It requires full traceability of additives and validated processes; few emulsion resins qualify and they are usually specific premium grades.<\/li>\n<li><strong>REACH \/ SVHC:<\/strong> This is relevant if you export to Europe or sell to Tier 1 automotive suppliers. Request the SVHC declaration from your resin supplier.<\/li>\n<\/ul>\n<h2>Why buy your paste resin with Chemical Additives<\/h2>\n<p>Beyond the product itself, what a formulator needs from their resin supplier is certainty\u2014knowing that the material will arrive when needed, with the expected consistency, and with technical support when complications arise. Chemical Additives de M\u00e9xico has operated under this principle for over 30 years.<\/p>\n<ul>\n<li><strong>Immediate availability in national warehouse.<\/strong> <span translate=\"no\">KH-10<\/span> y <span translate=\"no\">KM-60<\/span> In stock for fast delivery within the country. No import delays, no maritime transit times, no supply chain disruptions. For other grades in the portfolio <span translate=\"no\">Hanwha<\/span> (<span translate=\"no\">EM3090<\/span>, <span translate=\"no\">KH-60<\/span>, <span translate=\"no\">KH-31G<\/span>, <span translate=\"no\">KM-31<\/span>, <span translate=\"no\">KL-31<\/span>, (micro-suspension and extender), short delivery times under scheduled order.<\/li>\n<li><strong>One-stop-shop model.<\/strong> Resin, plasticizers (<span translate=\"no\">DOP<\/span>, <span translate=\"no\">DOTP<\/span>, <span translate=\"no\">DINP<\/span>, <span translate=\"no\">DOA<\/span>, <span translate=\"no\">TXIB<\/span>), <span translate=\"no\">ESBO<\/span>, Find Ca\/Zn stabilizers, impact modifiers, processing aids, lubricants, and other additives for your plastisol formulation from a single supplier. Reduce purchasing management costs, simplify logistics, and consolidate the traceability of your raw materials.<\/li>\n<li><strong>Real on-site technical support.<\/strong> When a formulation stops working as it should \u2014 paste viscosity skyrockets, new fish eyes appear, misaligned gelation, adhesion problems \u2014 our team of engineers visits your plant, takes on-site measurements, and proposes adjustments based on experience, not technical data sheets.<\/li>\n<li><strong>Backup in case of problems with your current provider.<\/strong> If your direct source experiences delays, changes specifications without notice, or stops supplying the grade you need, we can cover with qualified material in a matter of days, not months.<\/li>\n<li><strong>Side-by-side rating of counterparts.<\/strong> If you are considering changing suppliers \u2014 for consistency, cost, or service \u2014 we provide sufficient technical samples to run comparative formulations in your own plant, with guidance during the adjustment process.<\/li>\n<li><strong>Flexible volumes.<\/strong> From partial batches for testing and small formulations to recurring industrial volumes, we don&#039;t require you to commit to full truckloads to access our technical portfolio.<\/li>\n<\/ul>\n<p>For customers in Mexico, Central America (Guatemala, El Salvador, Dominican Republic) and other geographies in the region, we offer the same conditions of technical support and availability.<\/p>\n<h2>Closing<\/h2>\n<p>Emulsion resin is the most underrated yet critical component of a plastisol. Choosing the right resin\u2014and monitoring it batch by batch\u2014is the difference between reproducible production and a constant source of defects attributable to &quot;I don&#039;t know what changed.&quot;.<\/p>\n<p>At Chemical Additives de M\u00e9xico we distribute paste resins <span translate=\"no\">Hanwha<\/span> for all the applications described here: the <span translate=\"no\">EM3090<\/span> of classic emulsion for chemical foams and synthetic leather, and the micro-suspension family <span translate=\"no\">KH-10<\/span>, <span translate=\"no\">KH-60<\/span>, <span translate=\"no\">KH-31G<\/span>, <span translate=\"no\">KM-60<\/span>, <span translate=\"no\">KM-31<\/span> y <span translate=\"no\">KL-31<\/span> covering everything from vinyl gloves and clear top coats to vinyl inks and electrical coatings. If you currently use <span translate=\"no\">Iztavil P-440<\/span>, <span translate=\"no\">Iztavil P-410<\/span> o <span translate=\"no\">Primex 121<\/span> of <span translate=\"no\">Mexichem<\/span> If you&#039;re considering changing suppliers due to consistency issues, or if you&#039;re scaling up a new plastisol application, contact our technical team for a no-obligation consultation. <a href=\"https:\/\/chemicaladditives.com.mx\/en\/contacto\/\">Contact the technical team<\/a>.<\/p>\n<p><strong><a href=\"https:\/\/chemicaladditives.com.mx\/en\/contacto\/\">Request a technical sample or advice \u2192<\/a><\/strong><\/p>\n<hr>\n<p><em>Chemical Additives de M\u00e9xico has been formulating, developing, and distributing additives and resins for the PVC industry for over 30 years. Our engineering team provides on-site technical support to optimize plastisol and dry-blend formulations, as well as extrusion, calendering, and injection molding processes.<\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>Si tu planta procesa plastisol \u2014 sea para lonas recubiertas, papel tapiz, guantes por dipping, tintas vin\u00edlicas o juntas para tapa met\u00e1lica \u2014 la resina de emulsi\u00f3n (E-PVC) no es un commodity intercambiable. Define m\u00e1s del 60% del comportamiento de tu formulaci\u00f3n: viscosidad de pasta, temperatura de gelado, recuperaci\u00f3n el\u00e1stica, defectos superficiales y vida \u00fatil [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2352,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_angie_page":false,"page_builder":"","_joinchat":[],"footnotes":""},"categories":[1],"tags":[68,73,71,69,72,70],"class_list":["post-2342","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-e-pvc","tag-formulacion-pvc","tag-hanwha","tag-plastisol","tag-recubrimiento-textil","tag-resina-de-emulsion"],"_links":{"self":[{"href":"https:\/\/chemicaladditives.com.mx\/en\/wp-json\/wp\/v2\/posts\/2342","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chemicaladditives.com.mx\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chemicaladditives.com.mx\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chemicaladditives.com.mx\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/chemicaladditives.com.mx\/en\/wp-json\/wp\/v2\/comments?post=2342"}],"version-history":[{"count":0,"href":"https:\/\/chemicaladditives.com.mx\/en\/wp-json\/wp\/v2\/posts\/2342\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chemicaladditives.com.mx\/en\/wp-json\/wp\/v2\/media\/2352"}],"wp:attachment":[{"href":"https:\/\/chemicaladditives.com.mx\/en\/wp-json\/wp\/v2\/media?parent=2342"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chemicaladditives.com.mx\/en\/wp-json\/wp\/v2\/categories?post=2342"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chemicaladditives.com.mx\/en\/wp-json\/wp\/v2\/tags?post=2342"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}