Polyblends of styrene/.alpha.-methylstyrene copolymers with rein

Details Polyblends of styrene/.alpha.-methylstyrene copolymers with rein Polyblends of styrene/.alpha.-methylstyrene copolymers with rein

1986-03-14

1987-02-24

Ziegler, Jacob

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

Synthetic resins

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

525 75, 525 85, 525 86, 525902, C08L 4500, C08L 5104, C08L 5502

Patent

active

046457968

ABSTRACT:
Novel and particularly utile for many specific and extraordinarily-demanding applications intimately-blended admixtures of diverse synthetic resinous copolymers and graft-structured and/or the like or equivalent elastomer-based polymerizates are comprised of thoroughly intermixed products of polymerization (i.e., "polyblends") of: (i) copolymer(s) of styrene/.alpha.-methylstyrene and equivalents thereof with (ii) grafted rubber concentrates of an elastomeric substrate or backbone having thereon and thereto graft-interpolymerized styrene components therein and/or like or equivalent grafted rubber concentrate component(s). The polyblends involved exhibit superior and much-improved properties and characteristics of thermal stability, environmental stress crack resistance, hardness and so forth.

REFERENCES:
patent: 4200702 (1980-04-01), Gauesepohl et al.
patent: 4277574 (1981-07-01), Jastrzebski et al.

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