Transparent impact polystyrene plastics

butadiene and styrene (and like monomers) are copolymerized with modifiers to produce linear, randomized copolymers with a block styrene content of about 40 to 80 weight per cent and a bound styrene content of about 70 to 95 per cent. They are sufficiently free of block butadiene to be transparent. Such copolymers are plastic rather than elastomeric, and have high elongations as compared with those usually associated with copolymers of such high styrene content. Also, they have very high impact resistance.

Skip to: Description  · Patent History  ·  Patent History
Description
Patent History
Patent number: T954012
Type: Grant
Filed: Nov 7, 1975
Date of Patent: Jan 4, 1977
Assignee: The Firestone Tire and Rubber Company (Akron, OH)
Inventor: Robert C. Smith (Warren, OH)
Application Number: 5/630,060
Classifications
Current U.S. Class: Interpolymerized With Aromatic Hydrocarbon (526/340)
International Classification: C08F23610;