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 5% 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 5% 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.
11. The method of claim 10 , wherein the surfactant comprises an amphoteric surfactant, an anionic surfactant, and, optionally, a nonionic surfactant.
12. The method of claim 11 , further comprising a biocide.
13. The method of claim 12 , wherein the carboxyalkyl cellulose comprises carboxymethyl cellulose.
14. The method of claim 10 , wherein b. and c. are added separately.
15. The method of claim 10 , wherein b. and c. are mixed before adding to the laundry.
16. 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 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.
17. The method of claim 16 , wherein the additive further comprises a biocide.
18. A method according to claim 16 , wherein laundry detergent is also added.
19. A method according to claim 16 , wherein the washing machine contains laundry to be washed.
20. A method according to claim 18 , wherein the washing machine contains laundry to be washed.
21. A liquid laundry additive comprising:
b. zinc ricinoleate;
c. carboxyalkyl cellulose;
d. amphoteric surfactant;
e. anionic surfactant;
f. biocide;
g. fragrance; and
h. colorant;
wherein the zinc ricinoleate is present, on a wet basis, in an amount of 5% 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.
22. The liquid laundry additive of claim 21 , wherein the biocide is less than about 1% of the composition.
23. The liquid laundry additive of claim 21 , further comprising nonionic surfactant.
24. The liquid laundry additive of claim 1 , comprising an aqueous solvent.
25. The method of claim 10 , wherein the additive comprises an aqueous solvent.
26. The method of claim 16 , wherein the additive comprises an aqueous solvent.
27. A laundry care article comprising a pour bottle containing the liquid laundry additive of claim 1 .
28. The laundry care article of claim 27 , wherein the pour bottle is a plastic squeeze bottle.
29. The method of claim 10 , wherein the laundry additive is essentially free of enzyme.