C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 7/32 (2006.01) C11D 1/40 (2006.01) C11D 1/835 (2006.01) C11D 3/02 (2006.01) C11D 3/20 (2006.01) C11D 3/34 (2006.01) C11D 1/75 (2006.01)
Patent
CA 2255633
The present invention is a liquid acidic composition comprising from 0.01 % to 45 % by weight of the total composition of maleic acid, from 0.01 % to 25 % by weight of a second acid having its first pKa not exceeding 5, and an amine according to the formula RR'R"N, wherein R is a saturated or unsaturated, substituted or unsubstituted, linear or branched alkyl group of from 1 to 30 carbon atoms, and wherein R' and R" are independently saturated or unsaturated, substituted or unsubstituted, linear or branched alkyl groups of from 1 to 30 carbon atoms or hydrogen. These compositions deliver excellent limescale removal performance as well as outstanding greasy soap scum cleaning on hard-surfaces.
Cette invention se rapporte à une composition acide et liquide comprenant 0,01 à 45 % en poids de la composition totale d'acide maléique, 0,01 à 25 % en poids d'un second acide ayant son premier pKa ne dépassant pas 5, et une amine représentée par la formule RR'R"N où R représente un groupe alkyle linéaire ou ramifié, subsitué ou insubstitué, saturé ou insaturé, ayant 1 à 30 atomes de carbone, et où R' et R" représentent séparément des groupes alkyle linéaires ou ramifiés, substitués ou insubstitués, saturés ou insaturés, ayant 1 à 30 atomes de carbone ou de l'hydrogène. Ces compositions produisent d'excellentes performances d'élimination du tartre ainsi qu'un excellent pouvoir d'élimination des croutes savonneuses grasses lors du nettoyage de surfaces dures.
Briatore Andrea
Delucca Barbara
Rapisarda Dario
Dimock Stratton Llp
The Procter & Gamble Company
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