Detergent composition comprising lauric soap
View Patent ↗The laundry detergent composition of the invention contains a combination of a soap, an anionic surfactant, a nonionic surfactant, optionally a builder system, and optionally other detergent ingredients. The surfactant system comprises from 5 to 85 wt % in which the amount of soap is from 20 to 50 wt %, the amount of anionic is from 10 to 65 wt %, and the amount of nonionic is from 15 to 70 wt %, and wherein from 75 wt % to 100 wt % of the soap is present in the form of a granule which is dry-mixed with the other components, and the soap granule has a concentration of soap of at least 75 wt % based on the weight of the granule.
1. A laundry detergent composition comprising:
(a) from 5 to 85 wt % of a surfactant system comprising:
(i) from 20 to 50 wt % of a lauric soap,
(ii) from 10 to 65 wt % of an anionic surfactant,
(iii) from 15 to 70 wt % of a nonionic surfactant;
(b) maximum 15 wt % of a builder system; and
(c) optionally, other detergent ingredients to 100 wt %;
wherein the weight ratio of the nonionic surfactant to soap is within the range of from 0.75:1 to 2:1, wherein the weight ratio of the anionic surfactant to soap is from 1:1 to 2:1, wherein the turbidity of the surfactant system is less than 0.1; and wherein from 75 wt % to 100 wt % of the soap is present in the form of a granule having a particle size of between 400 to 1,400 pm and a bulk density of from 400 to 650 g/liter which is dry-mixed with the other components, and wherein the soap granule has a concentration of soap of at least 90 wt % based on the weight of the granule.
2. A laundry detergent composition as claimed in claim 1 , wherein the anionic surfactant is a sulphonate anionic surfactant.
3. A laundry detergent composition as claimed in claim 2 , wherein the sulphonate anionic surfactant comprises linear alkyl benzene sulphonate.
4. A laundry detergent composition as claimed in claim 1 , wherein the nonionic surfactant is an alkoxylated alcohol nonionic surfactant.
5. A laundry detergent composition as claimed in claim 1 , wherein the nonionic surfactant is an ethoxylated alcohol nonionic surfactant of the general formula I:
R—(—O—CH 2 —CH 2 ) n —OH (I)
wherein R is a hydrocarbyl chain having from 8 to 20 carbon atoms, and the average degree of ethoxylation n is from 2 to 20.
6. A laundry detergent composition as claimed in claim 5 , wherein the ethoxylated alcohol nonionic surfactant has a hydrocarbyl chain length of from C 12 to C 18 .
7. A laundry composition as claimed in claim 1 , wherein the weight ratio of the nonionic surfactant to soap is within the range of from 0.75:1 to 1.5:1.
8. A laundry detergent composition as claimed in claim 1 , wherein from 80 wt % to 100 wt %, preferably from 85 to 95 wt % of the soap is present in the form of granules.
9. A method of improving the dissolution of a laundry detergent composition in hard water, the method comprising adding to the laundry machine the composition of claim 1 .
10. A process for the preparation of a laundry detergent as claimed in claim 1 .
11. The method as claimed in claim 9 , wherein the water hardness is from 10 to 40 degrees of French hardness, preferably 16 to 32 degrees of French hardness.