(19) | |
| (11) | EP 0 447 927 A3 |
(12) | EUROPEAN PATENT APPLICATION |
(88) | Date of publication A3: | | 17.06.1992 Bulletin 1992/25 |
(43) | Date of publication A2: | | 25.09.1991 Bulletin 1991/39 |
(22) | Date of filing: 13.03.1991 |
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(84) | Designated Contracting States: | | BE DE DK ES FR GB IT NL SE |
(30) | Priority: | 23.03.1990 US 498168
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(71) | Applicant: GENERAL ELECTRIC COMPANY | | Schenectady, NY 12345 (US) |
| (72) | Inventor: | | - Eckberg, Richard Paul
Saratoga Springs, N. Y. 12866 (US)
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(74) | Representative: Pratt, Richard Wilson et al | | London Patent Operation
G.E. Technical Services Co. Inc.
Essex House
12/13 Essex Street London WC2R 3AA London WC2R 3AA (GB) |
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(54) | UV-curable pre-crosslinked epoxy functional silicones |
(57) UV-cured compositions comprising a precrosslinked epoxy-functional silicone and an onium salt photoinitiator are provided which have improved physical properties as compared to otherwise weak and brittle UV-cured compositions comprising non-precrosslinked epoxy-functional silicones and onium salt photoinitiators without adding fillers and without sacrificing fast, efficient UV cure speed. Such compositions are useful as conformal coatings, optical fiber coatings, and electrical encapsulation.