High impact visbroken polymeric blends

Details High impact visbroken polymeric blends High impact visbroken polymeric blends

1982-01-11

1983-03-01

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...

525 88, 525 71, 525240, 525198, 525222, 525227, 525941, C08L 2326, C08L 2310, C08L 5300

Patent

active

043755313

ABSTRACT:
A high melt flow rate, high impact, visbroken polymeric material is disclosed which comprises a first component which is selected from the group consisting of block copolymers of propylene and ethylene, reactor-made intimate mixtures of propylene and randomly oriented copolymers of propylene and ethylene, and blends of polypropylene and randomly oriented copolymers of propylene and ethylene, and the second component which is selected from the group consisting low density polyethylene, ethylene-vinyl acetate copolymers, acrylate-modified polyethylenes, high density polyethylene, ethylene-propylene rubber (EPR or EPDM), and blends thereof. The two components are first blended and then visbroken.

REFERENCES:
patent: 3121070 (1964-02-01), Coover et al.
patent: 3420916 (1969-01-01), Liu et al.
patent: 3954704 (1976-05-01), Verne et al.
patent: 4282076 (1981-08-01), Boynton
patent: 4312964 (1982-01-01), Sekine et al.

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