Impact-resistant polystyrene resin composition

Details Impact-resistant polystyrene resin composition Impact-resistant polystyrene resin composition

1997-11-11

1999-11-09

Teskin, Fred

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525243, 526134, 526160, 526170, 5263404, C08F27902

Patent

active

059816678

ABSTRACT:
Rubber-modified, impact-resistant polystyrene resin compositions having a well balanced combination of improved properties such as tensile strength and tensile elongation as well as reactivity with styrene monomers, impact resistance, low-temperature properties, and gloss, comprise dispersed particles of a rubber polymer which satisfies the following: (1) the content of the rubber polymer in the compositions is from 1 to 25% by weight; (2) the rubber polymer is a high-cis high-vinyl polybutadiene comprising from 65 to 95% cis-1,4-structures and from 30 to 4% 1,2-structures; and (3) the relationship between the 1,4-structures and 1,2-structures of the rubber polymer is represented by the following expression (A), wherein the value of .beta. is in the range of 1.0<.beta..ltoreq.1.43;

REFERENCES:
patent: 4579920 (1986-04-01), Tsujimoto et al.

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