Patent EP0004121A1 successfully refreshed from Google Patents.
EP0004121A1
Expired / Lapsed
EP
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Low phosphate laundry detergent compositions
Assignee: Procter and Gamble Co
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Filing: 1979-03-10
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Granted: —
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Expires: 1999-03-10
Abstract
Abstract Laundry detergent compositions containing specfic alcohol ethoxylate nonionic surfsctants together with selected di-long chain cationic surfsctants, within a narrow range of nonionic:cationic natios, and which are either free of phosphate materials and preferably polyethylene glycol di-esters, or contain only low levels of such materials, are disclosed. Thess compositions are unusually effective in removing particulate soils from fabrics and, additionally, provide fabric softening. static control, color fidelity, and dye transfer inhibition benefits to fabrics laundered therewith. A process for laundering fabrics, using these compositions, is also disclosed.
Inventors
- 👤 Alan Pearce Murphy
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 11:43
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/835; C11D1/8355; C11D1/38; C11D1/62; C11D3/00; C11D3/0005; C11D3/0021; C11D1/72
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
182 words
1 . A low phosphate laundry detergent composition, having a pH in the laundry solution of greater than about 7, containing from 0% to about 15% phosphate and from 0% to about 10% silicate materials, and being substantially free of ethoxylated cationic surfactants containing more than an average of about 10 moles of ethylene oxide per mole of surfactant, characterized in that it comprises from about 5% to about 100% of a surfactant mixture consisting essentially of: (a) a nonionic surfactant having the formula R(OCZH4)nOH, wherein R is a primary alkyl chain containing an average of from about 10 to about 18 carbon atoms and n is an average of from about 2 to about 9, and having an HLB of from 5 to about 14, or a mixture of such surfactants; and (b) a quaternary ammonium cationic surfactant having 2 chains which contain an average of from about 16 to about 22 carbon atoms, or a mixture of such surfactants; the ratio of said nonionic surfactant to said cationic surfactant being in the range of from about 2:1 to about 9:1.
Claim 2
Dependent Claim
182 words
1 . A low phosphate laundry detergent composition, having a pH in the laundry solution of greater than about 7, containing from 0% to about 15% phosphate and from 0% to about 10% silicate materials, and being substantially free of ethoxylated cationic surfactants containing more than an average of about 10 moles of ethylene oxide per mole of surfactant, characterized in that it comprises from about 5% to about 100% of a surfactant mixture consisting essentially of: (a) a nonionic surfactant having the formula R(OCZH4)nOH, wherein R is a primary alkyl chain containing an average of from about 10 to about 18 carbon atoms and n is an average of from about 2 to about 9, and having an HLB of from 5 to about 14, or a mixture of such surfactants; and (b) a quaternary ammonium cationic surfactant having 2 chains which contain an average of from about 16 to about 22 carbon atoms, or a mixture of such surfactants; the ratio of said nonionic surfactant to said cationic surfactant being in the range of from about 2:1 to about 9:1.
Claim 3
Dependent Claim
22 words
The compositions according to Claim 1 wherein the ratio of nonionic surfactant to cationic surfactant is from about 3:1 to about 6.5:1.
Claim 4
Dependent Claim
74 words
The compositions according to Claims 1 or 2 wherein the cationic surfactant is selected from the group consisting of or mixtures thereof, wherein the R 1 and R 2 groups contain an average of from about 16 to about 22 carbon atoms, R 3 and R 4 are C 1 to C 4 alkyl or hydroxyalkyl groups, and X is an anion selected from the group consisting of halide, hydroxide, methyl sulfate, or acetate.
Claim 5
Dependent Claim
79 words
The compositions according to any one of Claims 1 to 3 wherein the cationic surfactant has the formula where R 1 and R 2 contain an average of from about 16 to about 22-carbon atoms and at least about 20% of these chains contain at least one double bond, R 3 and R 4 are C 1 to C 4 alkyl or hydroxyalkyl groups, and X is selected from the group consisting of halide, hydroxide, methylsulfate and acetate anions.
Claim 6
Dependent Claim
47 words
The compositions according to any one of Claims 1 to 3 wherein the cationic surfactant is selected from the group consisting of ditallowalkyldimethylammonium chloride, ditallowalkyldimethylammonium methyl sulfate, dihexadecylalkyldimethylammonium chloride, dioctadecylalkyldimethylammonium chloride, dieicosylalkyl dimethylammonium chloride, methyl (1) tallowalkyl amido ethyl (2) tallowalkyl imidazolinium methyl sulfate, and mixtures thereof.
Claim 7
Dependent Claim
165 words
The compositions according to any one of Claims 1 to 5 wherein the nonionic surfactant is selected from the group consisting of the condensation product of C 14-15 alcohol with 2.25 moles of ethylene oxide; the condensation product of C 14-15 alcohol with 7 moles of ethylene oxide; the condensation product of C 12-15 alcohol with 7 moles of ehtylene oxide; the condensation product of C 12-15 alcohol with 9 moles of ethylene oxide; the condensation product of C 12-13 alcohol with 6.5 moles of ethylene oxide, and the same product which is stripped so as to remove lower ethoxylate and nonethoxylated fractions; the condensation product of C9-11 alcohol with 8 moles of eihylene oxide, which is stripped so as to remove lower ethoxylate and nonethoxylated fractions; the condensation product of coconut alcohol with 5 moles of ethylene oxide; the condensation product of coconut with 6 moles of ethylene oxide; the condensation product of tallow alcohol with 9 moles of ethylene oxide; and mixtures thereof.
Claim 8
Dependent Claim
18 words
The compositions according to any one of Claims 1 to 6 which is substantially free of phosphate materials.
Claim 9
Dependent Claim
24 words
The compositions according to any one of Claims 1 to 7 wherein said compositions are essentially free of fatty acid polyglycol ether di-ester compounds.
Claim 10
Dependent Claim
28 words
The compositions according to any one of Claims 1 to 8 which additionally contain from about 0.05% to about 1.5% of polyacids capable of forming water-soluble calcium complexes.
Claim 11
Dependent Claim
34 words
The compositions according to any one of Claims 1 to 9 which additionally contain from about 0.001% to about 2% of an alkaline proteolytic enzyme having an iso-electric point of greater than about 8.
References Cited (Backward Citations)
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