Anthraquinoylcarboxylic acid hydrazides, curable compositions and use thereof
CA 1283410 C · Owner: Fischer, Walter · Inventors: Fischer, Walter; Ramanathan, Visvanathan; Duthaler, Rudolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Anthraquinoylcarboxylic acid hydrazides curable compositions and, use thereof, Abstract of the Disclosure Anthraquinones of formula I, (I), wherein X is the group -CR2R3-, where R2 is H, -CN or C1-C5-alkyl and R3 is H or -CN, R1 is H or C1-C5-alkyl and R is a direct bond or linear or branched C1-C18-alkylene which, alone or together with the -CR2R3- group, can be interrupted by one or more -O- when R2 and/or R3 are not -CN, and curable compositions comprising a) an epoxy resin, b) a hardener if necessary, c) an anthraquinone of formula I and d) an amino alcohol. The cured compositions are photosensitive and are suitable for the preparation of coatings and metallic images by electroless …
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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 April 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 23, 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
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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.