Modified unsaturated polyesters and process for the preparation therefor
CA 1293572 C · Owner: Broekhuis, Antonius Augustinus · Inventors: Broekhuis, Antonius Augustinus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An unsaturated polyester modified by having an elastomeric polymer segment chemically bonded thereto the chemical bond, comprising a cyclic member containing six carbon atoms and pro-, cess for the preparation therefor by incorporating a conjugated diolefin group into an elastomeric polymer reacting the con-, jugated diolefin group with an ethylenically unsaturated group in an unsaturated polyester so as to chemically combine the elastomeric polymer and the polyester through a cyclic hydrocarbon structure comprising 6 C atoms and recovering a modified unsaturated polyester. The modified unsaturated ester so produced exhibits good impact resistance and may be used in thermosetting …
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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 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 2008.
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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.