Copolymerization
July 8th, 2008
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Copolymers of propene with olefins account for 30% of all PP sales. There are two types of copolymers having different applications. Random copolymers, obtained by copolymerizing mixtures of propene and other olefins have lower melting points and improved clarity. Impact (block) copolymers made in a two-stage polymerization process, are high-impact-strength grades that contain dispersed propene-ethylene elastomers. Stabilizers, antistats, antacids, slip and antiblock agents, crystallization nucleants are further compounded.
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