C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 2/10 (2006.01)
Patent
CA 2384761
The invention concerns a method for obtaining homopolymers and/or copolymers in aqueous solution using phosphorous acid and/or its salts or sodium hypophosphite and by neutralising during polymerisation ethylenically unsaturated monomers by continuously adding firstly bases such as sodium hydroxide, potassium hydroxide or lithium hydroxide, then alkaline-earth bases such as calcium hydroxide, magnesium hydroxide, calcium oxide or magnesium oxide. The invention also concerns the polymers obtained by said method and their uses.
Procédé d'obtention d'homopolymères et/ou copolymères en solution aqueuse par la mise en oeuvre de l'acide phosphoreux et/ou de ses sels ou encore de l'hypophosphite de sodium et par la neutralisation au cours de la polymérisation des monomères éthyléniquement insaturés par ajout en continu tout d'abord de bases telles que l'hydroxyde de sodium, l'hydroxyde de potassium ou l'hydroxyde de lithium puis de bases des alcalino-terreux tels que l'hydroxyde de calcium, l'hydroxyde de magnésium, l'oxyde de calcium ou l'oxyde de magnésium. Polymères obtenus par ledit procédé ainsi que leurs utilisations.
Egraz Jean-Bernard
Jacquemet Christian
Mongoin Jacques
Suau Jean-Marc
Coatex S.a.s.
Robic
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