Use of partially esterified copolymers in liquid detergents

Details Use of partially esterified copolymers in liquid detergents Use of partially esterified copolymers in liquid detergents

C - Chemistry, Metallurgy

11

D

134/3.3

C11D 3/37 (2006.01)

Patent

CA 2000731

O.Z. 0050/40290 Abstract of the Disclosure: Liquid, alkaline detergent formulations which contain as essential constituents a surfactant, water and 0.1-20% by weight of partially esterified copolymers are obtainable by the copolymeriza- tion of (a) one or moxe C4-C28-olefins and (b) ethylenically unsaturated dicarboxylic anhydrides of from 4 to 8 carbon atoms in a molar ratio of 1:1 and subsequent partial esterifi- cation of the copolymers of the reaction products (A) C1-C30-alcohols,C8-C22-fatty acids,C1-C12-alkylphenols or secondary C2-C30-amines with (B) one or more C2-C4-alkylene oxides or tetrahydrofuran in a molar ratio of (A):(B) of from 1:2 to 1:50 and hydrolysis of the anhyaride groups of the copolymer to carboxyl groups, the partial esterification of the copolymers being carried on until more than 5 to 50% of the carboxyl groups of the copolymers have been esteri- fied.

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