Impact polymer composition

Details Impact polymer composition Impact polymer composition

1984-04-23

1985-06-18

Lieberman, Allan M.

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

Synthetic resins

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

525 71, 525 98, 525316, C08L 5104, C08L 5302

Patent

active

045241848

ABSTRACT:
A polymer composition of polyparamethylstyrene and styrene-butadiene block copolymer. The polyparamethylstyrene has a molecular weight of about 50k-400k. The styrene-butadiene block copolymer has a weight average molecular weight of about 50k-250k, and is present in the composition in the amount of about 5-20 percent by weight as concentrated rubbery domains within the polyparamethylstyrene. Compositions according to the present invention show good impact, melt flow and transparency properties.

REFERENCES:
patent: 4239859 (1980-12-01), Miller
patent: 4275179 (1981-06-01), Sherman
patent: 4352908 (1982-10-01), Murray
patent: 4397988 (1983-08-01), Sherman
patent: 4425459 (1984-01-01), Fletcher
"New Morphologies in Rubber-Modified Polymers", by Gerard Riess et al., J. Macromol. Sci.-Phys. B17(2), 355-374, (1980).

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