Heat-vulcanizable adhesive and a method for bonding
CA 2001077 A1 · Owner: Herold, Julius · Inventors: Buecken, Hans-Juergen; Herold, Julius; Hofmann, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat-vulcanizable adhesive for the surface-bonding of solids is described, which contains polybutadiene or a polybutadiene mixture, and/or copolymer of butadiene with olefins and/or diolefins, and optionally other vulcanizable polymer components. Said adhesive is characterized by a content of at least 0.5 weight% (based on the vulcanizable polymers) metal salt from the group of drying agents for drying oils functioning as a hardening catalyst. The adhesive is particularly useful in vehicle assembly: a protective skin, which imparts washer resistance to the adhesive, is formed in less than 5 hours under prevailing working conditions.
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 20, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 20, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 20, 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.