Room temperature vulcanizable silicone compositions
CA 2056569 A1 · Owner: Wengrovius, Jeffrey H. · Inventors: Lucas, Gary M.; Wengrovius, Jeffrey H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Docket No. 60Sl-1394, Abstract of the Disclosure Room temperature vulcanizable silicone compositions are provided having improved shelf life, primerless adhesion deep section cure, and low, toxicity properties comprising by weight:, A. 100 parts of a polydiorganosiloxane having a viscosity of from about 100 to about 1,000,000 centipoise at 25°C. wherein the silicon atoms at each polymer end chain is terminated with at least two alkoxy radicals the, organic group being a C1-15 monovalent hydrocarbon radical; B. an effective amount of a diorganotin bis beta-diketonate condensation catalyst;, C. from about 0.1 to about 1.5 parts of a scavenger for hydroxy functional groups, preferably a …
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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 November 28, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 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.