Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...
Patent
1989-11-27
1991-11-05
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Compositions to be polymerized by wave energy wherein said...
522 99, 522148, 525477, 528 32, 427341, 427387, 428447, C08C 7738, C08C 7720
Patent
active
050632540
ABSTRACT:
A polysiloxane comprising a linear polydiorganosiloxane chain joined at one terminus to an acrylic-functional end group, and joined at its other end to a cross-linked MTQ moiety comprising a multiplicity of monofunctional siloxane units (M), trifunctional siloxane units (T), and tetrafunctional siloxane units (Q), wherein the concentration ratio of M units to the sum of T units and Q units, M/(T+Q), in the MTQ moiety is from about 0.55 to about 0.75, and wherein the number of siloxy repeating units in the linear polydiorganosiloxane chain is from 25 to 1,000. The M and or /T units may also contain (meth)acrylate groups. The MTQ/silicone hybrid resins of the invention are curable by UV radiation, to provide high tensile strength silicone compositions having utility in potting and conformal coating apllications.
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Bleutge John C.
Dean Jr. R.
Loctite Corporation
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