Styrenic polymer composition

Details Styrenic polymer composition Styrenic polymer composition

1996-07-11

1997-08-05

Zemel, Irina S.

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

Synthetic resins

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

525 70, 525 71, C08L 2506, C08L 2510

Patent

active

056543654

ABSTRACT:
Syndiotactic polystyrene can be impact-modified by a blend of (a) polystyrene-hydrogenated polybutadiene block copolymers and (b) one or more core/shell modifiers based on a lightly or non-crosslinked rubber core, and with at least one shell or intermediate shell stage which is predominantly polystyrene, to produce a material of higher impact strength than the better value of either additive singly at the same total impact modifier level.

REFERENCES:
patent: 3907930 (1975-09-01), O'Grady
patent: 4073831 (1978-02-01), Tabana et al.
patent: 5391603 (1995-02-01), Wessel et al.
patent: 5391611 (1995-02-01), Funayama et al.
patent: 5395890 (1995-03-01), Nakano et al.
patent: 5543462 (1996-08-01), Okada et al.

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