Laundry additive and drum treatment
The present invention relates to a liquid laundry additive composition and method of use in washing laundry. Not only does the composition reduce laundry odors but it also reduces washing machine drum odor.
1. A liquid laundry additive comprising:
a. zinc ricinoleate;
b. carboxyalkyl cellulose; and
c. at least one surfactant;
wherein the zinc ricinoleate is present, on a wet basis, in an amount of about 10% or less, the ratio of total surfactant to zinc ricinoleate, on a dry basis, is less than about 1:1, and the additive is pourable and essentially free of enzyme.
2. The liquid laundry additive of claim 1 , wherein the surfactant comprises an amphoteric surfactant, an anionic surfactant, and, optionally, a nonionic surfactant.
3. The liquid laundry additive of claim 1 , further comprising a biocide.
4. The liquid laundry additive of claim 1 , wherein the carboxyalkyl cellulose comprises carboxymethyl cellulose.
5. The liquid laundry additive of claim 2 , wherein the carboxyalkyl cellulose comprises carboxymethyl cellulose.
6. The liquid laundry additive of claim 1 , wherein the additive has a pH greater than 7.
7. The liquid laundry additive of claim 6 , wherein the additive has a pH of at least about 8.5.
8. The liquid laundry additive of claim 1 , which is essentially free of bleach, organic solvent, siloxane, solids, citrate, polysaccharide, and isoprenoid.
9. The liquid laundry additive of claim 1 , which is essentially free of silicone and cyclodextrin.
10. A method for treating laundry in a washing machine comprising adding to the washing machine in combination:
a. laundry to be treated;
b. detergent; and
c. liquid laundry additive comprising:
i. zinc ricinoleate;
ii. carboxyalkyl cellulose; and
iii. at least one surfactant;
wherein the amount of zinc ricinoleate, on a wet basis, is about 10% or less of the liquid laundry additive, the ratio of total surfactant to zinc ricinoleate, on a dry basis, is less than about 1:1, and the additive is pourable and essentially free of enzyme.
11. The method of claim 10 , wherein b. and c. are added separately.
12. The method of claim 10 , wherein b. and c. are mixed before adding to the laundry.
13. A method for treating laundry washing machine drum odor, comprising:
a. adding to the washing machine a liquid laundry additive comprising:
i. zinc ricinoleate;
ii. carboxyalkyl cellulose; and
iii. at least one surfactant;
wherein the zinc ricinoleate, on a wet basis, is about 10% or less of the liquid laundry additive, the ratio of total surfactant to zinc ricinoleate is less than about 1:1 on a dry basis, and the additive is pourable and essentially free of enzyme.
14. The method of claim 13 , wherein the additive further comprises a biocide.
15. A method according to claim 13 , wherein laundry detergent is also added.
16. A method according to claim 13 , wherein the washing machine contains laundry to be washed.
17. A method according to claim 15 , wherein the washing machine contains laundry to be washed.
18. A liquid laundry additive comprising:
a. zinc ricinoleate;
b. carboxyalkyl cellulose;
c. amphoteric surfactant;
d. anionic surfactant;
e. biocide;
f fragrance; and
g. colorant;
wherein the zinc ricinoleate is present, on a wet basis, in an amount about 10% or less, the ratio of total surfactant to zinc ricinoleate is less than about 1:1 on a dry basis, and the additive is pourable and essentially free of enzyme.
19. The liquid laundry additive of claim 1 , comprising an aqueous solvent.
20. The method of claim 10 , wherein the additive comprises an aqueous solvent.
21. The method of claim 13 , wherein the additive comprises an aqueous solvent.
22. A laundry care article comprising a pour bottle containing the liquid laundry additive of claim 1 .
23. The laundry care article of claim 22 , wherein the pour bottle is a plastic squeeze bottle.