Urethane resins containing hydrolyzable moieties from organosilane compounds
CA 1266942 C · Owner: Ppg Industries, Inc. · Inventors: Mckeough, David Thomas; Chang, Wen-Hsuan; Ambrose, Ronald Ruthvoyne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an ungelled urethane resin composition containing a urethane compound having in a molecule thereof at least one group containing a silicon atom selected from: and , wherein, Q represents the residue from a urethane polyol; each R which may be the same or different, represents hydrogen or a C1-C10 group joined to Si through an Si-C linkage; and Y represents an easily hydrolyzable group. The urethane resin composition contains an amount of easily hydrolyzable Y moieties such that the ratio of the number of grams of the ungelled urethane resin composition to equivalents of easily hydrolyzable Y moieties in the ungelled urethane resin composition is in a range of from 40 to 667. …
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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 20, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 20, 2007.
- 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.