Water-soluble copolymers of monoethylenically unsaturated...

C - Chemistry – Metallurgy – 08 – F

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C08F 220/00 (2006.01) C11D 3/00 (2006.01)

Patent

CA 2544053

Water-soluble copolymers which comprise, in copolymerized form, (a) 60 to 99% by weight of at least one monoethylenically unsaturated polyalkylene oxide monomer of the formula I (see formula I) in which the variables have the following meanings: X is -CH2- or -C(O)-, if Y is -O-; is -C(O)-, if Y is -NH-; is -O- or -O-(CH2)4-, if Y is a chemical bond; Y is -O-, -NH- or a chemical bond; R1 is hydrogen or methyl; R2 is C2-C4-alkylene radicals, which may be identical or different and also linear or branched, but where at least 50% of the radicals R2 are ethylene; R3 is C1-C22-alkyl, phenyl, p-(C1-C12-alkyl)phenyl or hydrogen; n is an integer from 6 to 50, (b) 1 to 40% by weight of at least one nonquaternized dipolar monomer comprising at least one nitrogen atom, (c) 0 to 39% by weight of other nonionic monoethylenically unsaturated monomers and (d) 0 to 10% by weight of other anionic monoethylenically unsaturated monomers and have an average molecular weight M w of from 2000 to 500 000 D, and the use of the copolymers as dispersants and sequestrants for pigmented materials, as additive for detergents, laundry pretreatment compositions, cleaners for hard surfaces, dentifrices and bodycare compositions, and as auxiliaries for textile processes, paper making and paper processing and deinking processes.

L'invention concerne des copolymères hydrosolubles contenant (a) 60 à 99 % en poids d'au moins un monomère d'oxyde de polyalkylène insaturé de la formule générale (I) dans laquelle X est -CH¿2?- ou -C(O)- quand Y est -O-; -C(O)- quand Y est -NH-; -O- ou -O-(CH¿2?)¿4?- quand Y est une liaison chimique; Y est -O-, -NH- ou une liaison chimique; R?1¿ est hydrogène ou méthyle; R?2¿ est un radical C¿2?-C¿4?-alkylène, identique ou différent, linéaire ou ramifié, au moins 50 % des radicaux R?2¿ étant éthylène; R?3¿ est C¿1?-C¿22?-alkyle, phényle, p-(C¿1?-C¿12?-alkyl)phényle ou hydrogène; n est un entier de 6 à 50; (b) 1 à 40 % en poids d'un monomère dipolaire non quaternisé contenant au moins un atome d'azote; (c) 0 à 39 % en poids d'autres monomères à insaturation monoéthylénique non ioniques; et (d) 0 à 10 % en poids d'autres monomères à insaturation monoéthylénique anioniques, polymérisés dans les copolymères, présentant un poids moléculaire moyen M¿w? de 2 000 à 500000 D. L'invention concerne également l'utilisation des copolymères en tant qu'agents dispersants et séquestrants de matériaux pigmentés, en tant qu'additifs de lessives, d'agents de prélavage, d'agents de lavage de surfaces dures, de dentifrices et d'agents de soins corporels, et en tant qu'agents auxiliaires de traitement textile, fabrication et traitement de papier et de processus de désencrage.

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