Oil gel formulations containing polyethylene-polydimethylsiloxan

Details Oil gel formulations containing polyethylene-polydimethylsiloxan Oil gel formulations containing polyethylene-polydimethylsiloxan

1999-05-07

2000-12-12

Dawson, Robert

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...

524267, 524588, 525106, 528 14, 528 25, 528 33, C08K 554, C08L 8310, C08G 7742

Patent

active

061600458

ABSTRACT:
This invention is a silicone oil gel composition which is comprised of a silicone block copolymer selected from the group consisting of polyethylene-polydimethylsiloxane block copolymers and polyethylene-polydimethylsiloxane-polydiphenylsiloxane block copolymers wherein the overall number average molecular weight ranges from 1000 to 21,000, preferably 1000 to 6000. The polyethylene blocks have a number average molecular weight of 400 to 3000, preferably 400 to 1500, the polydimethylsiloxane blocks have a number average molecular weight of 600 to 20,000, preferably 600 to 10,000, and the polydiphenylsiloxane blocks have a number average molecular weight of 200 to 2000, preferably 600 to 1200, wherein the block copolymer is dissolved in a silicone oil which is a polydimethylsiloxane polymer having a number average molecular weight of from 1000 to 1,000,000, preferably 4000 to 30,000.

REFERENCES:
patent: 4123409 (1978-10-01), Kaelble
patent: 5079300 (1992-01-01), Dubrow et al.
patent: 5618903 (1997-04-01), Hoxmeier et al.
patent: 5728469 (1998-03-01), Mann et al.
patent: 5880210 (1999-03-01), Schulz, Jr. et al.

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