Elastoplastic compositions

Details Elastoplastic compositions Elastoplastic compositions

1987-03-18

1988-09-06

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...

525194, 525232, G08L 2304, C08L 5300, C08L 6308

Patent

active

047694165

ABSTRACT:
The elastoplastic composition comprises a blend of a thermoplastic polyolefin resin, such as polypropylene, and vulcanized epoxidized natural rubber and has good oil resistance without the use of nitrile rubber and has good mechanical properties without the need for compatibilizing agents. The elastoplastic composition may be prepared by a method which comprises mixing the thermoplastic polyolefin resin and epoxidized natural rubber at a temperature sufficient to soften or melt the resin to give an intimate blend, then while continuing mixing, adding curative for the rubber and vulcanizing the epoxidized natural rubber at a vulcanization temperature.

REFERENCES:
patent: 4299931 (1981-11-01), Coran et al.
patent: 4487892 (1984-12-01), Ohmori et al.
patent: 4607074 (1986-08-01), Hazelton et al.
patent: 4624989 (1986-11-01), Berta

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