Partially esterified copolymers of monoethylenically...

C - Chemistry – Metallurgy – 08 – F

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C08F 267/04 (2006.01) C08F 8/14 (2006.01) C08F 222/08 (2006.01) C08F 283/06 (2006.01) C08L 51/00 (2006.01) C08L 51/08 (2006.01) C11D 3/37 (2006.01)

Patent

CA 2512600

Copolymers obtainable by free-radical polymerization of (A) at least one monoethylenically unsaturated C4-C8-dicarboxylic anhydride, (B) at least one vinylaromatic compound from the group consisting of styrene and substituted styrenes and (C) at least one monoethylenically unsaturated monomer which contains at least one heteroatom and is different from (A), and partial esterification of the resulting copolymers with (D) alcohol alkoxylates of the formula I (see formula I) in which the variables have the following meanings: R is C2-C6-alkylene radicals, which, when n is > 1, may be identical or different; R1 is C1-C30-alkyl; n is 1 to 200, and if desired hydrolysis of the anhydride groups still present in the copolymers to give carboxyl groups, and use of the copolymers as additive for detergents and cleaners.

La présente invention concerne des copolymères qui peuvent être obtenus par: polymérisation radicalaire de (A) au moins un anhydride d'acide dicarboxylique en C4-C8 monoéthyléniquement insaturé, (B) au moins un composé vinylaromatique appartenant au groupe formé par le styrène et les styrènes substitués et (C) au moins un monomère monoéthyléniquement insaturé qui comprend au moins un hétéroatome et est différent de (A); et estérification partielle des copolymères obtenus avec (D) des alcool alcoxylates de formule (I) dans laquelle les variables ont les correspondances suivantes: R représente des radicaux alkylène en C2-C6 qui peuvent être identiques ou différents pour n > 1; R?1¿ est alkyle en C1-C30; et n vaut 1 à 200; puis hydrolyse éventuelle des groupes anhydride en groupe carboxyle. L'invention a également pour objet l'utilisation des copolymères en tant qu'additifs à des agents de lavage et de nettoyage.

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