Ethylene-vinyl ester copolymer emulsions
CA 1286432 C · Owner: Gebhardt, Juergen · Inventors: Pennewiss, Horst; Gebhardt, Juergen; Mueller, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Concentrated emulsions adaptable to use as pour, point improvers of (1) copolymers of ethylene and a vinyl ester of a C1-C24-carboxylic acid and/or (2) polyalkyl- (meth)acrylic acid ester polymers in a liquid carrier medium which does not dissolve said polymers, said emulsions additionally containing, as an emulsifier, a graft- or block-copolymer of the formula, A-Y, wherein A is a segment of a copolymer of ethylene and a vinyl ester of a C1-C24-carboxylic acid (corresponding to polymer P1) or of a polymer of esters of acrylic acid and/or methacrylic acid with a C1-C40-alkanol wherein Y is at, least one segment obtained by the polymerization of vinyl monomers which are predominantly esters …
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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 July 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 16, 2008.
- 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.