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US 10,941,225 B2Granted
Photocurable electron deficient olefin-containing compositions
AssigneeHenkel IP & Holding GmbH
InventorsJohn G. Woods, Mary Palliardi, Joel D. Schall, Anthony F. Jacobine
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Abstract
This invention relates to photocurable electron deficient olefin-containing compositions, such as those containing certain 2-cyanoacrylates, 2-cyanopentadienoates, methylidene malonates, and vinylidine cyanide, and photolatent bases. When exposed to radiation in the electromagnetic spectrum, the compositions show a delay cure property.
Claims16
A photocurable composition comprising:
- (a) An electron deficient olefin;
- and
- (b) A photolatent base, wherein the photolatent base is within the following structure:
- wherein X is X is any one of hydrogen, alkyl, hydroxyl, thiol or heteroalkyl, Y is an alkylene linkage, Ra is an alkyl group having from one to four carbon atoms or an alkenyl group having from two to four carbon atoms, Rb is an alkyl group having from one to four carbon atoms or an alkenyl group having from two to four carbon atoms, Rc is an alkyl group having from one to four carbon atoms or an alkenyl group having from two to four carbon atoms, or Rb and Rc taken together form a cyclic ring structure of three to seven ring atoms, which may be interrupted by one or more heteroatoms, and n is 0 or 1.
1 more element
A photocurable composition comprising:
- (a) An electron deficient olefin;
- and
- (b) A photolatent base, wherein the photolatent base is a member selected from the group consisting of [(α-methyl-2-nitrobenzyl) oxycarbonyl]morpholine, [(2-nitrobenzyl)oxycarbonyl] dimethylamine, and 2-(2-nitrophenyl)propoxycarbonyl piperidine.
Dependencies are inferred from the claim text.