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...
Patent
1997-04-01
1999-03-09
Marquis, Melvyn I.
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...
524261, 524379, 524315, 524356, 524366, 524354, 524862, 528 15, 528 25, 528502F, C08K 524
Patent
active
058802100
ABSTRACT:
Silicone gels are made by reacting an .tbd.Si--H containing polysiloxane with an alpha-olefin and an alpha, omega-diene. The reaction is conducted in the presence of a platinum catalyst and in the presence of a low molecular weight silicone oil. First, an .tbd.Si--H containing polysiloxane is grafted by long chain alkyl groups from the alpha-olefin onto the .tbd.Si--H containing polysiloxane, and then crosslinked with double bonds in the alpha, omega-diene, in the presence of the low molecular weight silicone oil. The formed silicone gel can then be crumbled into a silicone powder using mechanical force. When additional amounts of the low molecular weight silicone oil are added to the gel, and the silicone oil and the gel are subjected to shear force, a silicone paste can be formed.
REFERENCES:
patent: 3715334 (1973-02-01), Karstedt
patent: 3814730 (1974-06-01), Karstedt
patent: 4987169 (1991-01-01), Kuwata
patent: 5493041 (1996-02-01), Biggs
patent: 5654362 (1997-08-01), Schulz, Jr. et al.
Schulz, Jr. William James
Zhang Shizhong
De Cesare James
Dow Corning Corporation
Lu-Rutt Caixia
Marquis Melvyn I.
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