Catalysts for addition of silicon hydrides to .alpha..beta.-unsaturated olefinic nitriles
CA 2071789 A1 · Owner: Dow Corning Corporation · Inventors: Bank, Howard Marvin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
CATALYSTS FOR ADDITION OF SILICON HYDRIDES TO .alpha..beta.-UNSATURATED OLEFINIC NITRILES ABSTRACT, The present invention is a process for the preparation of hydrolyzable .beta.-cyanoalkylsilanes. More particularly, this invention relates to the catalytic addition of hydrolyzable silicon hydrides to .alpha..beta.-unsaturated olefinic nitriles to form .beta.-cyanoalkylsilanes. The instant process employs novel catalysts comprising a diamine and non-activated copper, selected inorganic copper compounds or di-coordinate organic copper compounds.
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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 June 22, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 22, 2014.
- 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.