{"id":1234,"date":"2022-05-24T11:13:20","date_gmt":"2022-05-24T11:13:20","guid":{"rendered":"https:\/\/chemicaladditives.com.mx\/?p=1234"},"modified":"2026-08-10T10:45:00","modified_gmt":"2026-08-10T16:45:00","slug":"plastificante-para-pvc","status":"publish","type":"post","link":"https:\/\/chemicaladditives.com.mx\/en\/plasticizer-for-pvc\/","title":{"rendered":"PVC plasticizer"},"content":{"rendered":"
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Introduction to Plasticizers for PVC<\/h1>\n

Before getting started, we would like to thank you for visiting our page at Chemical Additives Mexico<\/strong><\/a>, where you will find various PVC solutions at the best price and quality available on the market. If you want to explore our plasticizers section, please click HERE.<\/u><\/strong><\/a><\/p>\n

In this article, we have taken the time to discuss PVC plasticizers<\/strong>, specifically DOP<\/strong> and DOTP<\/strong>, to understand why one might be used over the other.<\/p>\n

To begin, it is important to understand that a PVC plasticizer<\/strong><\/a> is an additive that solvates this polymer, meaning it provides flexibility by altering its physical properties. The theory explains that the plasticizer positions itself between PVC particles to form a bridge that allows molecular mobility; the greater the amount of plasticizer, the higher the flexibility achieved.<\/p>\n

This hardness is in turn controlled by a Shore A measurement scale (for flexible products) and a Shore D scale (for rigid products) using a durometer; the Shore A scale reaches a maximum of 95 points before we prefer to refer to a Shore D scale.<\/p>\n

Due to their excellent polarity with the polyvinyl chloride (PVC)<\/strong> molecule, both DOTP<\/strong> and DOP<\/strong> can alter the softening temperature of PVC<\/strong>, which is normally around 86\u00b0C in a rigid product. As the amount of PVC plasticizer<\/strong><\/a> in a formulation is increased, the material transitions from rigid to semi-rigid, and eventually to fully flexible, significantly lowering the softening temperature of the PVC in question.\n\"PVC<\/p>\n

It is important to note that, as with any additive, PVC<\/strong> has a limit to the amount of plasticizer it can accept before issues such as exudation or processing problems arise.<\/p>\n

Similarly, to achieve excellent processing results with plasticized PVC<\/strong>, the key is its addition during a high-speed mixing process that generates significant shear, thereby increasing the temperature of the resin. This allows the resin particles to expand, resembling a sponge, enabling them to absorb the PVC plasticizers<\/strong> and other additives the formulator wishes to include.<\/p>\n

Failure to follow a gradual addition process, controlling mixing temperatures and order of addition of\u00a0PVC additives,<\/strong>\u00a0This can cause various agglomeration and encapsulation problems, which in turn will result in surface defects in the final product. The molecular weight of the material must also be taken into consideration.\u00a0PVC resin<\/strong> utilizada pues normalmente su utilizan valores altos que van directamente relacionados con la capacidad de absorci\u00f3n de la resina empleada.<\/p>\n

The concept of solvation is very important when referring to polymer\u2013plasticizer polarity. Depending on the type of PVC plasticizer<\/strong><\/a> used, a certain degree of compatibility is achieved, which determines the amount that must be added to a formulation to reach the desired hardness. For example, different quantities will be required to achieve a Shore A 65 hardness depending on the plasticizer used, whether DOP, DOTP, DINP<\/strong>, etc.<\/p>\n

It is commonly believed that a PVC plasticizer<\/strong> only provides flexibility to the material, which is a misconception. PVC plasticizers<\/a><\/strong> can also affect chemical extraction resistance, low-temperature performance, electrical properties, lubrication during processing, and more. It is important to use the grade that best suits your final product and production process.<\/p>\n

Plasticizer for PVC: DOTP vs DOP<\/strong><\/h2>\n

El DOP (di-octil ftalato o DEHP) est\u00e1 clasificado en Europa como sustancia extremadamente preocupante (SVHC bajo REACH) por su clasificaci\u00f3n como reprot\u00f3xico categor\u00eda 1B, y se encuentra listado en la Prop 65 de California. Su uso est\u00e1 restringido en juguetes bajo EN 71-3, CPSIA (Estados Unidos) y NOM-015-SCFI (M\u00e9xico), as\u00ed como en art\u00edculos con contacto alimenticio o de uso m\u00e9dico. Estos marcos regulatorios han impulsado a la industria pl\u00e1stica a migrar hacia alternativas t\u00e9cnicamente equivalentes y sin las restricciones citadas, siendo el DOTP la opci\u00f3n preferida por mantener un desempe\u00f1o mec\u00e1nico y de proceso muy similar al DOP.<\/p>\n

However, due to the industry's shift towards products with lower levels of toxicity, this is why\u00a0DOTP<\/strong>\u00a0It is the preferred term when discussing a product related to the medical and\/or food industry.<\/p>\n

Aunque el plastificante DOP y el DOTP tienen el mismo peso molecular, existe una diferencia en el acomodo de los grupos \u00e9ster sobre el anillo benc\u00e9nico: el DOP tiene sus dos grupos \u00e9ster en posici\u00f3n ‘orto’ (1,2), caracter\u00edstica del \u00e1cido ortoft\u00e1lico, mientras que el DOTP los tiene en posici\u00f3n ‘para’ (1,4), caracter\u00edstica del \u00e1cido tereft\u00e1lico. Por eso el DOTP no se clasifica como ortoftalato bajo REACH ni bajo la Prop 65 de California. Esta diferencia es por lo cual la industria ha denominado al DOTP como un tereftalo en lugar de un ftalo convencional.<\/p>\n

From a commercial point of view,\u00a0DOP<\/strong>\u00a0It has been preferred, of course, when it is possible to use it, due to its greater compatibility with the\u00a0PVC<\/strong>\u00a0and therefore, faster absorption during the mixing process (better drying). Normally the\u00a0DOP<\/strong>\u00a0tends to be the\u00a0PVC plasticizer<\/strong><\/a>\u00a0more economical mainly due to the economies of scale achieved by this material, which result in a greater supply than the\u00a0DOTP<\/strong>. In Plastisol the\u00a0DOP<\/strong> es preferido porque no genera tantos defectos de \u201cpiquete de mosco\u201d por su distinta viscosidad y preferencia de liberaci\u00f3n de gases atrapados en el mezclado, aunque hay que tener cuidado al mercado al cual va dirigido.<\/p>\n

\"PVC<\/a>
Available in 1 ton totes or 200 kg drums<\/figcaption><\/figure>\n

Among the advantages of\u00a0DOTP<\/strong>, We found the previously discussed issue of toxicity, which allows it to comply with regulations such as RoHS or California's Prop 65 List. Furthermore, the\u00a0DOTP<\/strong>\u00a0it's a\u00a0plastic<\/strong>PVC fabric<\/strong>\u00a0which provides excellent mechanical properties at low temperatures, which is an added value that many companies are willing to pay for.<\/p>\n

In terms of color and appearance, both PVC plasticizers<\/strong> are transparent liquids that do not contain volatiles that could pose a concern to the user. They also have a very mild odor, which is generally pleasant for plant operators.<\/p>\n

We hope you found this article helpful and enjoyed it. If you have any questions or comments, please don't hesitate to contact your technical support representative through our [link to support page\/email\/etc.].\u00a0social networks<\/a>\u00a0or through our website. Visit our section on\u00a0PVC plasticizers<\/a>.\u00a0<\/strong><\/p>\n

Looking for PVC compounds? Visit us at Chemical Compounds<\/a>.<\/p>\n

Thank you so much.<\/p>\n

Chemical Additives de M\u00e9xico SA de CV.<\/strong><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<\/div>\n<\/div>\n

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