Coating compositions
CA 1302607 C · Owner: Andrews, Adrian Ferguson · Inventors: Hugh, Nicholas Saintjohn; Nunn, Michael John; Andrews, Adrian Ferguson
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coating composition comprising an anhydride polymer (A) containing at least two cyclic carboxylic acid anhydride functional groups and a polymer (B) containing at least two functional groups reactive with anhydride groups and selected from hydroxyalkylamino, hydroxyalkoxyalkylamino hydroxysub-, stituted acyloxyalkylamino hydroxysubstituted poly-, acyloxyalkylamino mercaptoalkylamino and oxazolidino, groups. One of the polymers (A) and (B) comprises at least one flexible polymer chain selected from polyether polyester, silicone, diene polymer, hydrogenated diene polymer, polyurethane, polyisobutylene and polyacrylate chains. The functional groups characteristic of that polymer are each …
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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 June 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 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.