Stable liquid enzyme compositions with enhanced activity
First Claim
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1. A liquid enzyme cleaning composition comprising surfactant, detersive enzyme, about 15 to about 85 wt-% water, and about 10 to about 35 wt-% alkanol amine borate;
- the alkanol amine borate remaining dissolved in the cleaning composition at room temperature;
wherein the liquid enzyme cleaning composition;
is formulated to provide detersive enzyme that retains about 80% of its initial activity at ambient temperature for about 11 months after forming the composition, comprises less than 1 wt-% of sodium ions, and has a pH in the range of about 9 to about 10.5.
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Abstract
The present invention relates to a liquid enzyme cleaning composition in which the enzyme is stable at alkaline pH and: at high concentration of boric acid salt; in the absence of sodium ion; and/or in the presence of water at concentrations of at least about 60 weight percent. The present enzyme cleaning composition typically yields superior soil (especially protein soil) removal properties. In an embodiment, the composition of the invention stabilizes the enzyme with potassium and/or alkanolamine borate.
61 Citations
22 Claims
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1. A liquid enzyme cleaning composition comprising surfactant, detersive enzyme, about 15 to about 85 wt-% water, and about 10 to about 35 wt-% alkanol amine borate;
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the alkanol amine borate remaining dissolved in the cleaning composition at room temperature; wherein the liquid enzyme cleaning composition; is formulated to provide detersive enzyme that retains about 80% of its initial activity at ambient temperature for about 11 months after forming the composition, comprises less than 1 wt-% of sodium ions, and has a pH in the range of about 9 to about 10.5. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A liquid enzyme cleaning composition consisting of:
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detersive enzyme, about 15 to about 85 wt-% water, about 10 to about 35 wt-% alkanol amine borate, ethoxylate (EO) nonionic surfactant, anionic surfactant, amphoteric surfactant and builder; and optionally, additional surfactants, hydrotrope, fragrance, source of calcium ions, polyol, dye, or mixtures thereof; wherein the alkanol amine borate remains dissolved in the cleaning composition at room temperature; and wherein the liquid enzyme cleaning composition; is formulated to provide detersive enzyme that retains about 80% of its initial activity at ambient temperature for about 11 months after forming the composition, and comprises less than 1 wt-% of sodium ions, and has a pH in the range of about 9 to about 10.5. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A liquid enzyme cleaning composition comprising
detersive enzyme, to 35 wt-% alkanol amine borate,0.5 to 40 wt-% surfactant, 3 to 15 wt-% builder, 8-30 wt-% polyol, and to 85 wt-% water;- and
wherein the liquid enzyme cleaning composition comprises less than 1 wt-% of sodium ions, and has a pH in the range of about 9 to about 10.5. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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Specification