Thermoplastic elastomer and process for preparation

Details Thermoplastic elastomer and process for preparation Thermoplastic elastomer and process for preparation

1991-06-21

1993-08-24

Seccuro, Jr., 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...

525193, 525194, 525197, 525198, 525240, C08L 2326, C08L 2316, C08L 2310, C08L 2304

Patent

active

052390004

ABSTRACT:
Thermoplastic elastomers in which low molecular weight ethylene/propylene
onconjugated diene rubber ("liquid" EPDM rubber) replaces part of the high molecular weight EPDM rubber used in conventional blends exhibit better tension set properties than conventional blends in which liquid EPDM rubber is not used. A masterbatch containing liquid EPDM rubber and phenolic curing resin which is added to a mixture of polyolefin, high molecular weight EPDM rubber, and other ingredients during mixing results in a thermoplastic elastomer having better mechanical properties as well as better tension set properties than blends of conventional materials.

REFERENCES:
patent: 3884993 (1975-05-01), Gras
patent: 4311628 (1982-01-01), Sabet et al.
patent: 4678834 (1987-07-01), Boivin et al.
patent: 4737547 (1988-04-01), White
patent: 4960829 (1990-10-01), Allen et al.

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