Blocked isocyanatocarbonyl group-containing polymers, and their production and use
CA 1281479 C · Owner: Tsuboniwa, Noriyuki · Inventors: Tsuboniwa, Noriyuki; Mizuguchi, Ryuzo; Urano, Satoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, A blocked isocyanatocarbonyl group-containing polymer which comprises a carbon-carbon backbone chain at, least one blocked isocyanatocarbonyl group and at least one active hydrogen-containing group or an acidic or basic group and has a molecular weight of 1,000 to 100,000 the contents, of said blocked isocyanatocarbonyl group and said active hydrogen-containing group or said acidic or basic group being respectively from 1 to 99% by weight and from 0.1 to 90% by weight or from 1 to 90% by weight based on the weight of the polymer. The polymers of the present invention can be used in a variety of resin compositions, for instance coating, compositions, adhesive compositions and the …
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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 March 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 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
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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.