Dual curing silicone, method of preparing same and dielectric so

Details Dual curing silicone, method of preparing same and dielectric so Dual curing silicone, method of preparing same and dielectric so

1983-10-03

1985-07-09

Marquis, Melvyn I.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

528 12, 528 34, C08F 246

Patent

active

045280819

ABSTRACT:
Novel dual curing silicones are terminated with acrylic functional dialkoxy or diaryloxy silyl groups. They are prepared by condensation of a silanol terminated silicone with a silane represented by the formula ##STR1## where R.sup.3 is alkyl or aryl, R.sup.4 is H or C.sub.1-5 alkyl and R.sup.5 is alkylene, the ratio of silane to silanol silicone being between about 2.1 and 6.1.
Compositions of the novel silicones with moisture cure catalysts, photoinitiators and optionally up to 70% trimethyl silyl terminated silicone oils, are both moisture and UV curable and produce soft gel or rubbery cured materials suitable for electronic potting applications.

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D. Dickson, Jr., Proceedings Electric/Electronic Intel. Conf., 12, 92-95 (1975).

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