Thermoplastic elastomer composition and process for preparation

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

1988-05-09

1990-03-06

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...

525194, 525240, 525237, C08L 2326, C08L 2316, C08L 2310, C08L 1900

Patent

active

049066943

ABSTRACT:
Disclosed is a thermoplastic elastomer composition excellent in the injection fusion bondability and the surface gloss, which comprises (1) an amorphous ethylene/.alpha.-olefin copolymer (a) and (2) (i) a lowly crystalline copolymer (b) of propylene with an .alpha.-olefin having at least 4 carbon atoms, (ii) a polymer (d) composed mainly of 1-butene or (iii) a combination of the copolymer (b) or the polymer (d) with a crystalline polymer (c) composed mainly of propylene, wherein the component (1) is present in an amount of 10 to 95% by weight based on the total amount of the components (1) and (2), the component (2) is present in an amount of 5 to 90% by weight based on the total amount of the components (1) and (2), and the component (1) or the components (1) and (2) are partially crosslinked.
The partial crosslinking is effected by grafting of a radical-polymerizable monomer having at least two polymerizable groups.

REFERENCES:
patent: 4113804 (1978-09-01), Cotten et al.
patent: 4211852 (1980-07-01), Matsuda et al.
patent: 4212787 (1980-07-01), Matsuda et al.
patent: 4368280 (1983-01-01), Yui et al.
patent: 4454092 (1984-06-01), Shimizu et al.
patent: 4650830 (1987-03-01), Yonekura et al.

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