Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...
Patent
1989-12-08
1992-02-25
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Compositions to be polymerized by wave energy wherein said...
522172, 528 21, 528 24, 528 25, 528 26, 528 29, 528 32, C08F 246
Patent
active
050914405
ABSTRACT:
Radiation polymerizable acrylate- or methacrylate-functional organo-polysiloxanes having the structural formula ##STR1## wherein R is a radical selected from the group consisting of monovalent hydrocarbon radicals having from 1 to 20 carbon atoms, substituted monovalent hydrocarbon radicals having from 1 to 20 carbon atoms, monovalent hydrocarbonoxy radicals having from 1 to 20 carbon atoms and a radical of the formula: ##STR2## in which at least one R is a radical of formula (I), R.sup.1 is hydrogen or a methyl radical, R.sup.2 is selected from the group consisting of a multivalent hydrocarbonoxy radical and a multivalent hydrocarbonoxy radical containing non-terminal atoms selected from the group consisting of oxygen, sulphur and nitrogen atoms, R.sup.3 is a divalent hydrocarbon radical or a divalent hydrocarbonoxy radical, a is a number having an average value of from 0.7 to 2.6, b is a number of from 1 to 5, and x is a number from 2 to 1000.
The acrylate- or methacrylate-functional organopolysiloxanes are combined with a photosensitizer and/or a peroxide and cured by radiation and/or heat. High energy electrons may be used in lieu of a photosensitizer or peroxide to cure these compositions.
REFERENCES:
patent: 4439291 (1984-03-01), Irving et al.
patent: 4810731 (1989-03-01), Hida et al.
patent: 5019644 (1991-05-01), Cavezzan et al.
Marquis Melvyn I.
Wacker Silicones Corporation
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