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
1996-03-20
1997-08-05
Dean, Ralph H.
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...
528 15, 528 25, 528 31, 523122, 424401, 524731, C08L 8305
Patent
active
056543620
ABSTRACT:
Silicone gels are made by reacting an .tbd.Si--H containing polysiloxane with 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. The reaction is continued until a gel is formed by crosslinking and addition of .tbd.Si--H across double bonds in the alpha, omega-diene. The silicone gel can then be crumbled into a silicone powder using mechanical force. When additional amounts of 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: 3418353 (1968-12-01), Brown
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patent: 4172101 (1979-10-01), Getson
patent: 4987169 (1991-01-01), Kuwata
patent: 5236986 (1993-08-01), Sakuta
patent: 5412004 (1995-05-01), Tacibana
patent: 5493041 (1996-02-01), Biggs
"Development of New Thickening Agent for Silicone Oils", Koji Sckuta, IFSCC Yokahama, Oct. 1992.
Schulz, Jr. William James
Zhahg Shizhong
Dean Ralph H.
DeCesare James L.
Dow Corning Corporation
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