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
1998-05-04
1999-11-02
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...
528 15, 528 31, 528 32, 524404, 524428, 524430, 524437, 524731, 524786, C08K 554
Patent
active
059772263
ABSTRACT:
A vacuum dispensable silicone composition comprising (A) a polydiorganosiloxane containing an average of at least two silicon-bonded alkenyl groups per molecule; (B) an organopolysiloxane resin consisting essentially of (a) R.sup.3.sub.2 (CH.sub.2 .dbd.CH)SiO.sub.1/2 siloxane units, (b) R.sup.3.sub.3 SiO.sub.1/2 siloxane units, and (c) SiO.sub.4/2 siloxane units wherein each R.sup.3 is independently selected from the group consisting of monovalent hydrocarbon and monovalent halogenated hydrocarbon groups free of aliphatic unsaturation, the mole ratio of the combination of (a) and (b) units to (c) units is from 0.6 to 1.1, and the resin contains 1 to 5 percent by weight of vinyl groups; (C) an organohydrogenpolysiloxane having an average of at least three silicon-bonded hydrogen atoms per molecule in an amount sufficient to provide from one to three silicon-bonded hydrogen atoms per alkenyl group in components (A) and (B) combined; (D) an adhesion promoter in an amount sufficient to effect adhesion of the composition to a substrate; (E) a hydrosilylation catalyst; (F) a platinum catalyst inhibitor having a boiling point greater than 150 .degree. C. at 0.10 MPa in an amount sufficient to retard curing of the composition at ambient temperature; wherein the composition is substantially free of air.
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patent: 5872170 (1999-02-01), Mine et al.
Benson Edward Joseph
Dent Stanton James
Lee Yeong Joo
Norris Ann Walstrom
Dow Corning Corporation
Marquis Melvyn I.
Milco Larry A.
Milstead Mark W.
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