Stripping composition for thermoset resins
CA 1068199 A · Owner: Westinghouse Electric Corporation · Inventors: Edelman, Leonard E.; Sprengling, Gerhard R.; Cargnel, Louis A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stripper composition for thermoset resins is disclosed which comprises about 1 to about 99% of an aromatic compound which has a boiling point over 180°C and is a phenol or a primary or secondary amine and about 1 to about, 99% of a carboxylic acid compound which has a boiling point over 180°C and is a rosin acid or a mono- or di-carboxylic fatty acid or an ester thereof. The composition also preferably includes sufficient hydrogen bonding compound to react with any acid present in the composition plus about 20 to about 50% in excess of that amount. A swelling agent is also preferably included.
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 December 18, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 18, 1996.
- 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.