Thermosetting resinous molding compositions
CA 1203043 A · Owner: Ashland Oil, Inc. · Inventors: Field, Richard E.; Borgnaes, Dan; Dunnavant, William R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermosetting resinous composition characterized in constituting at least two oligomeric polyester segments terminally joined through a polyurethane residue and having end groups containing polymerizable unsaturation. Further disclosed are the thermoset products obtained by the additional polymerization of the aforesaid compositions in the presence or absence of a copolymerizable monomeric crosslinking agent. The resultant thermoset products are particularly useful in preparing molded articles.
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 8, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 8, 2003.
- 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.