Coating processes – Electrical product produced – Welding electrode
Patent
1988-09-13
1990-09-11
Silverman, Stanley
Coating processes
Electrical product produced
Welding electrode
522 42, B05D 306
Patent
active
049561987
ABSTRACT:
Substantially hydroxy free, liquid, ultraviolet-curable compositions comprise cationically polymerizable ethylenically unsaturated material including a vinyl ether-terminated polyurethane which is the reaction product of isocyanate-reactive material including a monohydric vinyl ether and a diisocyanate having the formula: ##STR1## in which R is an alkylene group containing from 1-10 carbon atoms, this polyurethane having a number average molecular weight in the range of from 2000 to 6000, and a curing effective amount of a cationic photoinitiator which initiates a cationic cure when exposed to ultraviolet light, but less than 1% thereof based on the weight of the unsaturated material subjected to polymerization. These coatings are applied with a thickness of from 1 to 10 mils and cured with ultraviolet light, and they are particularly adapted to provide primary and single coatings for optical glass fiber.
REFERENCES:
patent: 4751273 (1988-06-01), Lapin et al.
patent: 4775732 (1988-10-01), Lapin
patent: 4812489 (1989-03-01), Watanabe et al.
patent: 4845265 (1989-07-01), Lapin et al.
Poklacki Erwin S.
Shama Sami A.
Zimmerman John M.
DeSoto, Inc.
Silverman Stanley
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