Adhesion promoter
CA 2001698 A1 · Owner: Gruber, Werner · Inventors: Rebouillat, Serge; Andres, Johannes; Gruber, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure Described are heat-activatable adhesion promoters for treating the surfaces of metals or synthetic materials (plastics) prior to bonding, containing - from 0.1 to 10% by weight of a carbonyl compound having at least one activated double bond - from 5 to 30% by weight of a polymer having functional groups, - from 0 to 10% by weight of further auxiliary materials, as well as, - one or more organic solvent(s) to make 100% by weight. The invention further relates to a process for producing the heat-activatable adhesion promoter and the use thereof for the surface treatment of polymer fibers.
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
- Filed October 27, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 27, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 27, 2011.
- 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.