Detergents containing water-soluble copolymers containing as copolymerized units monomers having two or more ethylenically unsaturated double bonds
CA 1307437 C · Owner: Basf Aktiengesellschaft · Inventors: Winkler, Ekhard; Seelmann-Eggebert, Hans-Peter; Hartmann, Heinrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
O.Z. 0050/39183, Abstract of the Disclosure: A surfactant-based detergent contains water-soluble copolymers which contain a) from 99.5 to 15 mol % of one or more monoethylenically unsaturated C3- to C6-monocarboxylic acids b) from 0.5 to 20 mol % of one or more comonomers which contain two or more ethylenically unsaturated nonconjugated double bonds and have one or more -CO-OX groups where X is hydrogen, an alkali metal, one equivalent of an alkaline earth metal or ammonium, c) from 0 to 84.5 mol % of one or more monoethylenically unsaturated C4- to C6-dicarboxylic acids d) from 0 to 20 mol % of one or more hydroxyalkyl esters of monoethylenically unsaturated C3- to C6-carboxylic acids and, …
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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.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.