Triazine photoinitiators in a ternary system for addition polymerization
CA 2000855 A1 · Owner: Ubel, Frank A. Iii · Inventors: Ali, Mohammad Z.; Busman, Stanley C.; Ubel, Frank A. Iii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
43199CAN5A, Triazine Photoinitiators In A Ternary System For Addition Polymerization, ABSTRACT OF DISCLOSURE Photocurable addition-polymerizable compositions containing a free-radically-polymerizable monomer and a photoinitiator system containing i) a trihalomethyl substituted-s-triazine ii) a sensitizing compound and, iii) an electron donor having an oxidation potential that is greater than zero and less than or equal to that of p-dimethoxybenzene (1.32 volts vs. S.C.E.). The compositions cure rapidly and deeply under ultraviolet or visible light.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 17, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 17, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 17, 2011.
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Timeline
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Sources & verification
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.