Polyurethane adhesive compositions and heat-activatable films thereof
CA 1076733 A · Owner: Norton Company · Inventors: Malloy, John F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An heat activatable adhesive composition which is a, partially cured reaction product of a hydroxyl terminated polyurethane polyester having a hydroxyl number no greater than about 15, a member containing at least difunctional active hydrogen having an active hydrogen equivalent weight of at least about 27 and less than about 500, a component having available free isocyanate groups and a fourth component such as a chlorinated aliphatic hydrocarbon, a chlorinated aromatic hydrocarbon or an, alkylated polystyrene.
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 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 29, 1997.
- 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.