Fluid organosiliconic composition and process for preparing it
CA 1290876 C · Owner: Greco, Alberto · Inventors: Greco, Alberto; Lugli, Gabriele
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An organosiliconic fluid composition suitable for use in sealants and comprising a liquid phase and a solid polymeric phase, which solid phase is insoluble and dispersed in the liquid phase, is obtained by polymerizing under the influence of free-radical initiators styrene, or, a mixture of styrene with at least one other vinylic or acrylic monomer, in the presence of a liquid polyoxypropylenediol-?,.omega.-bis-allyl silylate having formula (I): or in the presence of a liquid polycarbonate of polyoxypropylenediol-?,.omega.-bis-allyl silylate having formula (II): wherein R is C1-C10 alkyl radical, X is a hydrolyzable radical selected from alkoxy, aminooxy and acyloxy radicals Y is 0, 1 or 2, …
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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 October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2008.
- 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.