Process for anion removal from orthophosphate coatings
CA 1057140 A · Owner: E.I. Du Pont De Nemours And Company · Inventors: Hecht, James L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Title, Process for Anion Removal from Orthophosphate Coatings ABSTRACT OF THE DISCLOSURE, The process of coating an organic polymeric shaped article with aluminum orthophosphate, using an anion compound as a source of aluminum, and topcoating with a polymer is further improved to enhance barrier properties under moist conditions. The aluminum orthophosphate coating is dried to effect no more than a partial cure and the anion concentration is reduced below about 1% of the weight of the solids content of the coating prior to completing the cure. The topcoating may be applied prior to completing the cure and then dried at a temperature to effect a substantially complete cure of the aluminum …
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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 26, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 26, 1996.
- 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.