Claims
- 1. A stable soil release promoting enzyme-containing liquid detergent comprising a detersive proportion, in the range of 25% to 40%, of a nonionic detergent, a detergent supplementing and fluorescent brightener substantivity increasing proportion, in the range of 1 to 8%, of sodium higher fatty alcohol polyethoxylate sulfate detergent, a soil release promoting proportion, in the range of 0.5 to 5%, of a soil release promoting polymer of polyethyene terephthalate and polyoxyethylene terephthalate of a molecular weight in the range of about 15,000 to 50,000, wherein the polyoxyethylene of the polyoxyethylene terephthalate is of a molecular weight in the range of about 1,000 to 10,000, and with the molar ratio of ethylene terephthalate to polyoxyethylene terephthalate units being within the range of 2:1 to 6:1, an enzymatically hydrolyzing proportion, within the range of 0.005 to 0.1% (active basis) of enzyme, which enzymatically hydrolyzes proteinaceous soil or proteinaceous and amylaceous soils on fabrics during washing thereof with an aqueous washing solution of the liquid detergent, a stabilizing proportion, within the range of 0.2 to 2%, of a stabilizer for the enzyme(s), and an aqueous medium, in which the pH is in the range of about 6 to 9 and in which there is present no more than 2% of water soluble ionizable material other than the higher fatty alcohol polyethoxylate sulfate detergent.
- 2. A liquid detergent according to claim 1 which comprises from 28 to 36% of nonionic detergent, which is a condensation product of higher fatty alcohol of 10 to 20 carbon atoms and 3 to 20 moles of ethylene oxide per mole of higher fatty alcohol, 2 to 7% of sodium higher fatty alcohol polyethoxylate sulfate wherein the higher fatty alcohol is of 10 to 20 carbon atoms and the polyethoxy moiety is of 1 to 20 ethoxy groups per mole, 0.5 to 5% of soil release promoting polymer of polyethylene terephthalate and polyoxyethylene terephthalate 0.02 to 2% of fluorescent brightener(s), 0.01 to 0.1% of proteolytic enzyme, 0.005 to 0.05% of amylolytic enzyme, 0.5 to 1.5% of a stabilizer for the enzymes and 3 to 12% of lower alkanol, and in which there is present no more than 1% of water soluble ionizable material other than the higher fatty alcohol polyethoxylate sulfate detergent, and no more than 0.5% of a total of triethanolamine and triethanolamine salt.
- 3. A liquid detergent according to claim 2 in which the nonionic detergent is a condensation product of a higher fatty alcohol of 12 to 15 carbon atoms and 6 to 11 moles of ethylene oxide per mole of higher fatty alcohol, the higher fatty alcohol polyethoxylate is one wherein the alcohol is of 10 to 15 carbon atoms and contains 1 to 5 ethoxy groups per mole, the fluorescent brightener is a stilbene brightener, the soil release promoting polymer is of a molecular weight in the range of 19,000 to 25,000, the polyoxyethylene of the polyoxyethylene terephthalate is of a molecular weight in the range of 3,000 to 4,000, the molar ratio of ethylene terephthalate to polyoxyethylene terephthalate units of the polymer is within the range of 3:1 to 4:1 and the molar ratio of ethylene oxide to phthalic moiety therein is from 20:1 to 30:1, the enzyme stabilizer is sodium formate, the lower alkanol is ethanol, and the proportions of nonionic detergent, higher fatty alcohol polyethoxylate sulfate, fluorescent brightener, soil release promoting polymer, proteolytic enzyme, amylolytic enzyme, sodium formate, ethanol, and water are within the ranges of 30 to 34%, 2 to 6%, 0.1 to 1%, 0.8 to 3%, 0.02 to 0.05%, 0.01 to 0.03%, 0.7 to 1.3%, 4 to 9%, and 46 to 62%.
- 4. A liquid detergent according to claim 3 which is clear and consists essentially of about 32% of a nonionic detergent which is a condensation product of a higher fatty alcohol of 12 to 15 carbon atoms and about 7 moles of ethylene oxide per mole of higher fatty alcohol, about 5% of sodium higher fatty alcohol polyethoxylate sulfate wherein the higher fatty alcohol is of 12 to 15 carbon atoms and the ethoxylate is of about 3 moles of ethylene oxide per mole of higher fatty alcohol, about 0.3% of stilbene fluorescent brightener, about 2% of soil release promoting polymer of a weight average molecular weight of about 22,000, in which the polyoxyethylene of the polyoxyethylene terephthalate is of a molecular weight of about 3,400, the molar ratio of ethylene terephthalate to polyoxyethylene terephthalate units of the polymer is about 3:1 and the molar ratio of ethylene oxide to phthalic moiety therein is about 22:1, about 0.03% of proteolytic enzyme, about 0.02% of amylolytic enzyme, about 1% of sodium formate, about 5.5% of ethanol, about 0.4% of perfume and about 54% of deionized water.
- 5. A stable soil release promoting, enzyme containing liquid detergent according to claim 1 in which the stabilizer for the enzyme(s) is an alkali metal formate.
- 6. A stable soil release promoting, enzyme-containing liquid detergent according to claim 1, comprising about 32% of a nonionic detergent which is a condensation product of about 7 moles of ethylene oxide and a mole of higher fatty alcohol averaging 12 to 15 carbon atoms per mole, about 3% of a sodium salt of a sulfuric acid ester of the nonionic condensation product of about 2.25 moles of ethylene oxide and a mole of higher fatty alcohol averaging 14 to 15 carbon atoms per mole, about 2% of a soil release promoting copolymer of polyethylene terephthalate and polyoxyethylene terephthalate of a molecular weight of about 22,000 wherein the polyoxyethylene is of a molecular weight of about 3,400, the molar ratio of polyethylene terephthalate to polyoxyethylene terephthalate units is about 3:1 and the proportion of ethylene oxide to phthalic moiety in the polymer is about 22:1, about 5.5% of ethanol, about 1% of sodium formate, about 0.1% (active basis) of mixed proteolytic and amylolytic enzymes, about 0.3% of fluorescent brightener, about 0.4% of perfume and about 56% of water.
Parent Case Info
This application is a continuation of my patent application Ser. No. 539,080, filed Oct. 5, 1983, now abandoned which is a continuation-in-part of my application Ser. No. 481,904, filed Apr. 4, 1983. Both Ser. Nos. 481,904 and 539,080 now stand abandoned. Ser. No. 481,904 was abandoned in favor of continuation application Ser. No. 628,967, now abandoned.
US Referenced Citations (9)
Non-Patent Literature Citations (1)
Entry |
Technical Data on Quaker QCF, 2 pages, published by Quaker Chemical Corp., Conshohocken, Pa. (Division of Alkaril Chemicals Co.), publication date not established. |
Continuations (1)
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539080 |
Oct 1983 |
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