ACR is a copolymer of monomers such as methyl methacrylate and acrylic ester.

It is the best impact modifier developed in recent years and can increase the impact strength of materials by several tens of times.

ACR belongs to the impact modifier of core-shell structure, consisting of a shell composed of methyl methacrylate ethyl acrylate polymer, and a rubber elastomer formed by crosslinking with butyl acrylate as the core chain segment distributed in the inner layer of particles. Especially suitable for impact modification of PVC plastic products for outdoor use, using ACR as an impact modifier in PVC plastic door and window profiles has the characteristics of good processing performance, smooth surface, good aging resistance, and high welding corner strength compared to other modifiers, but the price is about one-third higher than CPE. Commonly used brands abroad, such as K-355, typically require 6-10 servings

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