Method for producing granular or powdery detergent compositions

C - Chemistry – Metallurgy – 11 – D

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C11D 3/37 (2006.01) C11D 11/00 (2006.01)

Patent

CA 2624919

The invention relates to a method for producing granular or powdery detergent compositions, involving the production of a detergent base powder by drying an aqueous detergent slurry. The invention is characterized in that a copolymer is added to the slurry. This copolymer can be obtained by radically copolymerizing: (A) 20 to 80 % by weight of at least one monomer from the group of monoethylenically unsaturated monocarboxylic acids, dicarboxylic acids and dicarboxylic acid anhydrides, and; (B) 20 to 80 % by weight at least one monomer from the group of aliphatic or aromatic monoolefins.

L'invention concerne un procédé servant à produire des compositions détergentes en granulés ou en poudre et consistant à produire une poudre de base détergente par séchage d'une suspension épaisse détergente aqueuse. Le procédé selon l'invention est caractérisé en ce qu'on ajoute à la suspension épaisse un copolymère obtenu par copolymérisation radicalaire (A) de 20 à 80 % en poids d'au moins un monomère du groupe des acides monocarboxyliques, acides dicarboxyliques et anhydrides d'acides dicarboxyliques monoéthyléniquement insaturés et (B) de 20 à 80 % en poids d'au moins un monomère du groupe des mono-oléfines aliphatiques ou aromatiques.

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