Reactive coatings comprising and acid-functional compound, an anhydride-functional compound, and epoxy-functional compound and a hydroxy-functional compound
CA 1307607 C · Owner: Harris, Rodney M. · Inventors: Marquart, James A.; Harris, Rodney M.; Shalati, Mohamad D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Curable compositions which comprise: (i) an acid-functional compound having an average of at least two carboxylic acid groups per molecule; and (ii) an anhydride-functional compound having an average of at least two cyclic carboxylic acid anhydride groups per molecule; and, (iii) an epoxy-functional compound having an average of at least one epoxy group per molecule; and (iv) a hydroxy-functional compound having an average of at least two hydroxyl groups per molecule; wherein at least one of the compounds (i) (ii), (iii) or, (iv) comprises a film forming polymer.
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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 September 15, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 15, 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.