Liquid cleaning compositions with improved enzyme compatibility and/or stability
In one embodiment, a cleaning composition includes a surfactant system having an invert structure; and at least one enzyme.
1. A cleaning composition, comprising:
a surfactant system having an invert structure, wherein the surfactant system is present in an amount ranging from about 25 wt % to about 65 wt % based on a total weight of the cleaning composition;
at least one enzyme product present in the cleaning composition in an amount ranging from 3 wt % to about 15 wt % based on the total weight of the cleaning composition; and
water present in the cleaning composition in an amount from 40 wt % or less based on the total weight of the cleaning composition,
wherein the cleaning composition is characterized by an initial enzyme activity level, and
wherein the cleaning composition is characterized by a retained enzyme activity level of at 95% of the initial enzyme activity level after being stored for about 8 weeks,
wherein the cleaning composition comprises no enzyme stabilizers,
wherein the cleaning composition comprises no borates.
2. The cleaning composition of claim 1 , wherein the at least one enzyme product comprises one or more active enzymes, and
wherein a total amount of the one or more active enzymes present in the cleaning composition is in a range from 5 wt % to 15 wt % based on the total weight of the cleaning composition.
3. The cleaning composition of claim 1 , wherein a total amount of the one or more active enzymes present in the cleaning composition is in a range from 11 wt % to 15 wt % based on the total weight of the cleaning composition.
4. The cleaning composition of claim 1 , wherein the at least one enzyme product comprises a plurality of active enzymes, and wherein a total amount of the plurality of active enzymes present in the cleaning composition is in a range from 12 wt % to 15 wt % based on the total weight of the cleaning composition.
5. The cleaning composition of claim 1 , wherein the surfactant system comprises a nonionic surfactant in combination with an anionic surfactant.
6. The cleaning composition of claim 5 , wherein a weight ratio of the nonionic surfactant to the anionic surfactant is from 2 to 3.
7. The cleaning composition of claim 5 , wherein a weight ratio of the nonionic surfactant to the anionic surfactant is from 2.3 to 2.7.
8. The cleaning composition of claim 5 , wherein the surfactant system is present in an amount ranging from about 35 wt % to about 50 wt %.
9. The cleaning composition of claim 1 , wherein the surfactant system is present in an amount ranging from about 35 wt % to about 50 wt %.
10. The cleaning composition of claim 9 , further comprising a solvent system comprising a polyalcohol, the solvent system being present in an amount effective to solubilize the water in the surfactant system.
11. The cleaning composition of claim 1 , further comprising a brightener.
12. The cleaning composition of claim 5 , wherein a weight ratio of the nonionic surfactant to the anionic surfactant is from about 1 to about 4.
13. The cleaning composition of claim 1 , wherein the water is present in an amount from greater than 0 wt % to less than or equal to about 35 wt %.
14. The cleaning composition of claim 1 , wherein the cleaning composition comprises at least a 5X concentrate.
15. The cleaning composition of claim 1 , wherein the cleaning composition is readily biodegradable.
16. The cleaning composition of claim 1 , wherein the cleaning composition is in a form of a single water-in-oil emulsion, wherein micelles of the surfactant system are inverted in the composition.
17. A method of making a cleaning composition, the method comprising:
combining a surfactant system and at least one enzyme to create a cleaning composition as in claim 1 .
18. The cleaning composition of claim 5 , further comprising an amine neutralized organic acid (ANOA),
wherein the cleaning composition is characterized by a freezing point lower than a freezing point of an otherwise identical cleaning composition lacking the ANOA.
19. The cleaning composition of claim 18 , wherein the cleaning composition is characterized by a freezing point at least 10° F. lower than a freezing point of an otherwise identical cleaning composition lacking the at least one ANOA.
20. The cleaning composition of claim 18 , wherein the ANOA is present in the cleaning composition in an amount greater than 0 wt % and less than or equal to about 5 wt % based on the total weight of the cleaning composition.
21. The cleaning composition of claim 18 , wherein the ANOA is MIPA lactate present in an amount greater than 0 wt % and less than or equal to 3 wt %.
22. The cleaning composition of claim 18 , wherein the ANOA is a compound selected from a group consisting of:
monoisopropylamine (MIPA) citrate, MIPA lactate, triethanolamine (TEA) citrate, and TEA lactate.
23. The cleaning composition of claim 18 , wherein the ANOA is MIPA citrate present in an amount greater than 0 wt % and less than or equal to about 1.2 wt %.
24. The cleaning composition of claim 16 , wherein a plurality of enzymes of the enzyme product are contained within the inverted micelles.
25. The cleaning composition of claim 1 , wherein the cleaning composition has substantially no free water.
26. A cleaning composition, comprising:
a surfactant system comprising:
a nonionic surfactant present in an amount ranging from about 15 to about 60 wt % based on a total weight of the cleaning composition, and
an anionic surfactant present in an amount ranging from about 15 to about 55 wt % based on the total weight of the cleaning composition,
wherein the surfactant system comprises invert micelles;
one or more active enzymes present in an amount ranging from 4 wt % to 15 wt % based on the total weight of the cleaning composition; and
water present in the cleaning composition in an amount ranging from greater than 0 wt % to less than or equal to 40 wt % based on the total weight of the cleaning composition,
wherein the cleaning composition is in a form of a single water-in-oil emulsion,
wherein the cleaning composition is characterized by an initial enzyme activity level,
wherein the cleaning composition is characterized by a retained enzyme activity level of at 95% of the initial enzyme activity level after being stored for about 8 weeks,
wherein the cleaning composition comprises no enzyme stabilizers or borates.
27. The cleaning composition of claim 26 , wherein the one or more active enzymes are contained within the invert micelles of the surfactant system.
28. The cleaning composition of claim 26 , wherein the one or more active enzymes are present in an amount ranging from 12 wt % to 15 wt % based on the total weight of the cleaning composition.