Use of surface-active substances in cleaning agents

C - Chemistry – Metallurgy – 11 – D

Patent

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Details

C11D 1/825 (2006.01) C11D 1/72 (2006.01)

Patent

CA 2713335

The invention relates to selected surface-active substances of groups a) and b), the surface-active compound a) being selected from compounds of general formula (Ia), wherein M represents a group CH2-CH2 or CHR-CH2, R, R' or R" inde-pendently represent saturated, unsaturated, linear or branched alkyl groups or alkenyl groups with 6 to 22 C atoms, and the indices n and m independently can have values between 1 and 40, and/or compounds of general formula (Ib), wherein R"' and R"" inde-pendently represent saturated, unsaturated, linear or branched alkyl groups or alkenyl groups with 4 to 22 C atoms, and the indices n and m independently can have values between 1 and 40 and X' and X" independently represent H or saturated, unsaturated, linear or branched alkyl groups or alkenyl groups with 1 to 18 C atoms. The surface active substances of the invention, either on their own or combined with other nonionic surfactants, lead to dishwashing agents with an improved drying performance, especially in multifunctional agents for automatic dishwashers.

L'invention concerne des substances tensioactives sélectionnées dans les groupes a) et b), le composé tensioactif a) étant sélectionné parmi des composés de formule générale (Ia) dans laquelle M désigne un reste CH2-CH2 ou CHR-CH2, R, R' et R'' désignent indépendamment les uns des autres des restes alkyle et alkényle saturés, insaturés,linéaires ou ramifiés ayant entre 6 et 22 atomes de C, les indices n et m peuvent adopter indépendamment l'un de l'autre des valeurs comprises entre 1 et 40, et/ou des composés de formule générale (Ib) dans laquelle R' et R'' désignent indépendamment l'un de l'autre des restes alkyle ou alkylène saturés, insaturés, linéaires ou ramifiés ayant entre 4 et 22 atomes de C et les indices n et m peuvent adopter indépendamment l'un de l'autre des valeurs comprises entre 1 et 40 et X' et X'' désignent indépendamment l'un de l'autre H ou des restes alkyle et alkylène saturés, insaturés, linéaires ou ramifiés ayant entre 1 et 18 atomes de C. Ces substances contribuent utilisées seules ou en combinaison avec d'autres tensioactifs non ioniques à une amélioration de la capacité de séchage de lave-vaisselle, notamment dans des agents multifonctionnels pour lave-vaisselle automatiques.

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