Graft copolymer compositions

Details Graft copolymer compositions Graft copolymer compositions

1990-03-26

1991-02-05

Ziegler, Jacob

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524505, 525 71, C08L 5106, C08L 5302

Patent

active

049905589

ABSTRACT:
Disclosed are compositions of (a) about from 60 to 95% of a graft copolymer comprising a styrene polymer grafted onto a propylene polymer material at a styrene polymer graft level of about 10-65%, and exhibiting a morphology in which the grafted styrene polymer is a dispersed phase and the propylene polymer material is the matrix phase, and (b) about from 40 to 5% of a rubber component comprising a monoalkenyl aromatic hydrocarbon-conjugated diene block copolymer, alone or in combination with a saturated (preferably, EPM) or unsaturated (preferably, EPDM) olefin copolymer rubber. These graft copolymer compositions are well-balanced with respect to impact strength and stiffness at high ductility levels. The compositions, which may be admixed with one or more additives such as inorganic fillers in an amount, for example, of up to about 80 parts additive per 100 parts of the graft copolymer and rubber component, are rigid thermoplastics useful as stand-alone structural materials.

REFERENCES:
patent: 3314904 (1967-04-01), Burkus
patent: 4386187 (1983-05-01), Grancio et al.
patent: 4556691 (1985-12-01), Castelein
patent: 4622352 (1986-11-01), Djiauw
patent: 4661549 (1987-04-01), Walker
patent: 4663369 (1987-05-01), Kawai et al.
patent: 4871805 (1989-10-01), Shimomura et al.

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