C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 5/10 (2006.01) C02F 1/44 (2006.01) C02F 5/14 (2006.01) C08F 222/06 (2006.01) C09K 8/508 (2006.01) C09K 8/575 (2006.01)
Patent
CA 2640033
The invention relates to a mewthod for controlling the thickening of aqueous systems containing silicates, characterized in that at least one copolymer having an average molecular weight Mw of more than 60000 g/mol is added to said aqueous system and that the copolymer consists, essentially statistically, of monoethylenically unsaturated monocarboxylic acids, monoethylenically unsaturated dicarboxylic acids and, optionally, other ethylenically unsaturated comonomers, the indicated amounts referring to the total amount of all used monomers, respectively.
L'invention concerne un procédé pour contrôler l'épaississement de systèmes aqueux contenant des silicates. Ce procédé se caractérise en ce qu'il consiste à ajouter au système aqueux au moins un copolymère d'un poids moléculaire moyen Mw supérieur à 60 000 g/mole puis à constituer le copolymère de manière sensiblement statistique à partir d'acides monocarboxyliques monoéthyléniquement insaturés, d'acides dicarboxyliques monoéthyléniquement insaturés et éventuellement d'autres comonomères éthyléniquement insaturés, les quantités indiquées se rapportant chacune à la quantité totale de tous les monomères utilisés.
Buechner Karl-Heinz
Goethlich Alexander
Klippel Frank
Nied Stephan
Schornick Gunnar
Basf Se
Borden Ladner Gervais Llp
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