Photocurable composition
CA 1282272 C · Owner: Sekisui Kagaku Kogyo Kabushiki Kaisha · Inventors: Shohi, Hajime; Danjo, Shigeru; Araki, Yasuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A photocurable composition comprising (a) 100 parts by weight of a resin having structural units derived from at least one alpha, beta-unsaturated ethylenically unsaturated monomer, (b) 10 to 300 parts by weight of a photopolymerizable monomer, (c) 0.1 to 20 parts by weight of a photopolymerization initiator, and (d) 0.01 to 1 part by weight of a compound represented by the following general formula (I) or general formula (II) ..... (I), ..... (II), wherein R1 represents a divalent aromatic hydrocarbon group having bonds at the ortho-position to each other; R2 represents hydrogen, an alkyl group having 1 to 4 carbon atoms, a phenyl group or an aryl group having a C1-C4 alkyl; R3 and R4 each …
Read the whole patent
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 April 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 2, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.