Pigment dispersion and its use
CA 1319775 C · Owner: Herberts Gesellschaft Mit Beschrankter Haftung · Inventors: Bederke, Klaus; Kerber, Hermann; Rupieper, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Herberts Gesellschaft mit beschrankter Haftung Christbusch 25, 5600 WUPPERTAL 2, ABSTRACT A pigment dispersion and its use for the preparation of coating compounds are described. The dispersion contains a pigment, solvent and pigment dispersing agent. The pigment dispersing agent is a copolymer containing OH groups obtainable by the reaction of:, A) 80 to 95% by weight of a copolymer of a) 0?5 to 40% by weight of N,N-di-C1 to 4-alkylamino- C1 to 8-alkyl(meth)acrylamides and/or a mixture of N'N-di-C1 to 4-alkylaminio-C1 to 8-alkyl(meth) acrylates and N- substituted (meth) acrylamides and/or (meth) acrylamide in which the ratio of amino(meth)acrylates to amido(meth)acrylates should be in the …
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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 29, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 29, 2010.
- 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.