Unsaturated polyester resins
CA 1134530 A · Owner: Scott Bader Company Limited · Inventors: Russell, Robert F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To allow inhibition of styrene evaporation from an unsaturated polyester resin during curing there is present in, the resin a small amount (0.1 to 5 % by weight) of a lone-chain vinyl compound of the formula, wherein R is a straight-or branched-chain substituted or unsubstituted aliphatic C6-C24 hydrocarbon Y = H or CH3, N = zero or 1, X = , or -0-. Preferred such compounds are lauryl and stearyl methacrylate. The resins are made by admixture of the selected compound(s) with the conventional other components of the resin.
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 October 26, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 26, 1999.
- 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.