Primer compositions exhibiting heat resistant bonding
CA 2036735 A1 · Owner: Dow Corning Corporation · Inventors: Larson, Kent R.; Larson, Kent R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improved primer compositions comprise A) at least one member of a specified group of ethylenically unsaturated organosilicon compounds containing silicon-bonded alkoxy groups, B) silicone/organic copolymers prepared from esters of ethylenically unsaturated organic acids and organosilicon compounds derived from these acids, C) organohydrogensiloxane curing agents and D) a solvent. The improvement resides in the presence in the primer composition of an organic peroxide in an amount sufficient to retain the bonding properties of the primer composition at temperatures of at least 100°C. The solvent portion of the primer composition preferably comprises at least 50 percent by weight of an …
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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
- Filed February 20, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 20, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 20, 2013.
- 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.