Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1991-03-14
1992-11-17
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525479, 528 15, 528 31, 528 32, 528 33, C08F28300
Patent
active
051644614
ABSTRACT:
A fast curing, addition-curable silicone composition curable to form an adhesive having good physical properties and improved lap shear adhesive properties, comprising (A) a vinyl-containing polydiorganosiloxane composition, (B) a hydrogen-terminated polysiloxane in an amount sufficient to provide an adhesion-promoting molar ratio of silicon-bonded hydrogen atoms in (B) to olefinically unsaturated radicals in (A); (C) a catalytic amount of a platinum-containing hydrosilation catalyst; (D) an effective amount of an adhesion promoter selected from the group consisting of (i) bis[3-(trimethoxysilyl)alkyl]fumarates; (ii) bis[3-(trimethoxysilyl)alkyl]maleates; (iii) allyl-[3-(trimethoxysilyl)alkyl]maleates; (iv) allyl-[3-(trimethoxysilyl)alkyl]fumarates; and (v) N-[3-(trimethoxysilyl)alkyl]maleimides, wherein R.sup.2, R.sup.3, and R.sup.4 are each alkyl radicals of 1 to about 8 carbon atoms; and (E) from about 0 to about 200 parts of an extending filler; and (F) from about 0 to about 50 parts of a reinforcing filler; providing that (F) must be present if (A)(ii) is absent.
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Davis Mark W.
Kerr, III Stuart R.
Mitchell Tyrone D.
Bleutge John C.
General Electric Company
Glass Margaret W.
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