Low temperature toughening of polycarbonates with a modified blo

Details Low temperature toughening of polycarbonates with a modified blo Low temperature toughening of polycarbonates with a modified blo

1991-11-04

1992-12-29

Buttner, David J.

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

Synthetic resins

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

525 92, 525303, C08L 6900, C08L 5104, C08F28700

Patent

active

051752123

ABSTRACT:
Toughened polycarbonate compositions are obtained by blending from 2 to 10 parts by weight of a modified block copolymer with from 90 to 98 parts by weight of a polycarbonate. The modified block copolymers have at least one hydrogenated conjugated diene block and at least one vinyl aromatic block, and are free-radically grafted with an effective amount of hydroxyethylacrylate to give a 1/8 inch notched Izod impact strength of greater than 4.0 ft-lb/in at -40.degree. F.

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