Moisture curable polyisobutylenes
CA 1311076 C · Owner: Saam, John C. · Inventors: Saam, John C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides novel moisture curable liquid isobutylene oligomers containing terminal groups of the formula, -?i(O?i)nR'SiX3, where R represents a monovalent hydrocarbon or halogenated hydrocarbon radical, R' represents an alkylene radical X is, a hydrolyzable group bonded to silicon through oxygen or nitrogen, and n represents an integer from 1 to 5 inclusive. The invention also provides a method for preparing these oligomers by the hydrosilation of terminally unsaturated isobutylene oligomers with a siloxane of the general formula H?i(O?i)nR'SiX3, in the presence of a platinum-containing hydrosilation catalyst.
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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
- Granted December 1, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 1, 2009.
- 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.