Granted Patent B2

US 7,205,268 · App. 11/050,928 · Granted Apr 17, 2007

Abstract

Claims (16)

1. A low-foaming aqueous liquid laundry detergent composition comprising:

(a) from about 0.05% to about 6%, by weight of the composition, of a carboxylic acid ester and/or low-degree alkoxylated derivatives thereof of a compound formula (I):

wherein R 1 is selected from linear or branched C 6 to C 20 alkyl or alkylene groups;

R 2 is selected from C 2 H 4 or C 3 H 6 groups;

R 3 is selected from CH 3 , C 2 H 5 or C 3 H 7 groups;

and n is 0,

with the proviso that R 1 , R 2 , R 3 and n are such that HLB is below about 10;

wherein the compound of formula (I) is present in an amount of from about 0.06 to about 35% wight of the total amount of the compound of formula (I) and surfactants;

(b) from about 8% to about 80% of a surfactant comprising from about 5% to about 50%, by weight of the composition, of an anionic surfactant;

(c) from about 15% to about 90% of water;

(d) the foaming height of the composition is 75 mm or less after 5 minutes.

2. The composition of claim 1 wherein the foaming height of the composition is 50 mm or less after 5 minutes.

3. The composition of claim 1 wherein R 3 is CH 3 .

4. The composition of claim 1 wherein the formula (I) compound is present in an amount of from about 2% to about 30% by weight of the total of formula (I) and surfactants.

5. The composition of claim 1 further comprising a nonionic surfactant, wherein the weight ratio of the nonionic surfactant to the anionic surfactant is in the range of from about 1:4 to about 4:1.

6. A method of washing laundry in a front-loading laundry washing machine, the method comprising adding to the washing machine the composition of claim 1 .

Assignments (6)