Polyaldimines of oligomeric aminobenzoic acid derivatives, and their use for preparation of moisture-curable, storage-stable, one-part polyureas
CA 2371224 A1 · Owner: Sawyer, Kenneth I. · Inventors: Nisnevich, Gennadiy; Kuznetsov, Vladimir; Gutman, Arie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to new polyaldimines that are stable either per se or in a mixture with aromatic polyisocyanates. However when exposed to , moisture the polyaldimines readily generate polyamines upon hydrolysis. Moisture curable one part polyurea compositions which may be used for , preparing polyurea elastomers adhesives, or coatings, were prepared from the new polyaldimines and organic polyisocyanates. These compositions have good storage stability and are rapidly tempered by water or atmospheric moisture. Cured compositions give polyurea resins having good physicochemical properties. The present invention also relates to a process for the preparation of polyaldimines …
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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 April 23, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 23, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2022.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.