Polystyrene blends and a method of making same

Details Polystyrene blends and a method of making same Polystyrene blends and a method of making same

2008-12-11

2010-11-16

Nutter, Nathan M (Department: 1796)

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

Synthetic resins

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

C525S240000, C525S241000

Reexamination Certificate

active

07834095

ABSTRACT:
Disclosed are blends of polystyrene and at least one of syndiotactic polypropylene, ethylene propylene copolymers, and styrene-butadiene-styrene triblock copolymers. These blends are prepared using solution polymerization and have unique morphologies and desirable physical properties. The blends can also be prepared with graft-promoting or crosslinking agents and rubbers to prepare modified high impact polystyrene.

REFERENCES:
patent: 4001349 (1977-01-01), Severini et al.
patent: 4925896 (1990-05-01), Matarrese et al.
patent: 5414047 (1995-05-01), Clikeman
patent: 0 400 479 (1990-12-01), None

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