Dimers derived from unsymmetrical 2,4,5- triphenylimidazole compounds as photoinitiators
CA 1137348 A · Owner: E. I. Du Pont De Nemours And Company · Inventors: Dessauer, Rolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Title, Dimers Derived From Unsymmetrical 2,4,5-Triphenylimidazole Compounds As Photoinitiators Abstract of the Invention, Photoimaging compositions comprising (A) 2,4,5-triphenylimidazolyl dimer having selected substituents on the 2,4 and 5 phenyl rings and an extinction coefficient determined in methylene chloride at 10-5 to 10-3 mol/liter at 350 nm of at least 4000 liters/mol-cm and at 400 nm of at least 250 liters/mol-cm; and at least one of (B1) leuco dye or (B2) addition polymerizable ethylenically unsaturated monomeric compound. The new imaging compositions are useful in preparing dual response photoimaging products such as proofing papers printout paper, overlay films and …
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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
- Granted December 14, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 14, 1999.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.