PVC Impact Modifiers

Product Overview

General Description

Impact modifiers for PVC are copolymers of the type MBS (Methacrylate-Butadiene-Styrene), ABS (Acrylonitrile-Butadiene-Styrene), CPE (Chlorinated Polyethylene), among others, that help rigid PVC dissipate impact and thus prevent fracture. PVC is inherently weak in impact and in applications, such as water bottles or rigid profiles, these additives help avoid breakage and thus guarantee quality for the customer. Grades are available for both opaque and clear PVC, with or without weathering properties.

Like acrylic-based processing aids, these additives increase the viscosity of the PVC melt during processing. Therefore, to prevent premature thermal degradation, it is recommended to use one of our thermal stabilizers or lubricants.

To improve the performance of this material, reduce its dosage, and save costs, it is recommended to thoroughly review the formulation used to promote polymer fusion. Certain adjustments to process conditions can also be made to achieve improvements in this area.

When manufacturing rigid PVC profiles, this additive helps prevent breakage during cutting; however, care must be taken regarding stress whitening.

IM-812

IM-812 is a core-shell acrylic impact modifier (ACR) recommended for rigid and semi-rigid PVC exposed to the elements: pipe, profiles, and other rigid applications. It offers good color retention, good weather resistance, and good impact resistance at very cold temperatures. Because it is based on a saturated acrylic rubber—without the UV-vulnerable butadiene double bonds—it maintains performance and color after prolonged sun exposure, making it the modifier of choice for outdoor applications compared to MBS.

CPE-135-A

CPE-135-A is an impact modifier for rigid PVC applications. It provides good anti-agglomeration properties, rapid fusion, low-temperature impact resistance, and good mechanical properties. It is widely used in the impact modification of PVC, ABS, and ASA, as well as in films, sealing strips, waterproofing membranes, and as a processing aid in high-speed cable extrusion and helical hose construction. It is also used in some rubber applications.

MB-875

MB-875 is an MBS-type impact modifier that can be used in clear applications, such as bottles and rigid film, where excellent impact resistance and chemical resistance are required.This product offers excellent resistance to oil penetration and provides very good transparency in bottles made with PVC formulations. Furthermore, its easy dispersion in these formulations ensures more consistent impact resistance and other physical properties.

LB-156

MBS LB-156 is a copolymer of methyl methacrylate, butadiene, styrene, and a quaternary functional monomer. It is characterized by its fast fusion, high impact resistance, and high processing performance in PVC products.It is especially recommended for manufacturing opaque applications, such as extruded or calendered opaque films and sheets, extruded pipes and profiles for interior use, injection fittings, appliance housings, WPC, bottles, and granular PVC materials. It is not suitable for transparent applications.

LB-136

MBS LB-136 is a terpolymer of methyl methacrylate, butadiene, and styrene, primarily used in the rigid PVC process. Its main characteristics are high impact resistance, good transparency, good processability, shorter gelation time, and less crease-whitening. It can be used in opaque or transparent applications.Its fast fusion contributes to higher output, its greater impact efficiency allows for reduced MBS dosage and cost savings in formulation, and it improves the impact properties of blow-molded PVC products, injection-molded parts, calendered sheet and tubing, PVC films, laminated materials, granular materials, pipe for indoor use, and pipe fittings.