Impact-modified polymers (p-1304)

Details Impact-modified polymers (p-1304) Impact-modified polymers (p-1304)

1990-12-21

1991-11-19

Seccuro, Carman J.

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

Synthetic resins

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

525240, 525243, 525322, 525323, 522112, C08L 2326, C08L 2310, C08L 2304, C08F29708

Patent

active

050667238

ABSTRACT:
Impact-modified polymeric materials are produced by visbreaking certain reactor blends. In a preferred embodiment, impact-modified polypropylene materials are produced by visbreaking a reactor blend of polypropylene and thermoplastic polyethylene. The polypropylene material is preferably homopolypropylene having a melt flow rate of less than about 1 dg/min. Such impact-modified polymeric materials manifest unexpected compatibility characteristics, increased impact resistance at low temperatures, improved antiblush characteristics and improved flow characteristics.

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