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US4174305A
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Alkyl benzene sulfonate detergent compositions containing cellulose ether soil release agents
Assignee: Procter and Gamble Co
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Filing: 1977-06-07
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Granted: 1979-11-13
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Expires: 1997-06-07
Abstract
Abstract Cellulose-based soil release ethers are used in detergent compositions containing C10-C12 alkyl benzene sulfonate surfactants, and substantially free from interfering longer-chain length alkyl benzene sulfonates, to provide optimal soil release performance.
Inventors
- 👤 Michael E. Burns
- 👤 Charles H. Nicol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:17
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/22; C11D1/24; C11D3/00; C11D3/0005; C11D3/0036; C11D3/16; C11D3/20; C11D3/22; C11D3/222; C11D3/225
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
143 words
A detergent composition, comprising: (a) from about 5% to about 50% by weight of a surfactant component consisting essentially of a water-soluble alkyl benzene sulfonate wherein the alkyl substituent has a chain length in the range of C 10 -C 12 , or mixtures thereof, said surfactant component being substantially free of C 13 and higher alkyl benzene sulfonates; (b) from about 0.1% to about 3% by weight of a water-soluble soil release ether component selected from the group consisting of alkyl cellulose ethers, hydroxyalkyl cellulose ethers and hydroxyalkyl alkyl cellulose ethers; (c) from about 0% to about 70% by weight of a detergency builder component; and (d) the balance of the composition comprising detergency adjunct materials and carriers selected from a group consisting of water, water/ethanol mixtures, perfumes, optical bleaches, fillers, anti-caking agents, fabric softeners, perborate bleaches, and enzymes and mixtures thereof.
Claim 2
Dependent Claim
143 words
A detergent composition, comprising: (a) from about 5% to about 50% by weight of a surfactant component consisting essentially of a water-soluble alkyl benzene sulfonate wherein the alkyl substituent has a chain length in the range of C 10 -C 12 , or mixtures thereof, said surfactant component being substantially free of C 13 and higher alkyl benzene sulfonates; (b) from about 0.1% to about 3% by weight of a water-soluble soil release ether component selected from the group consisting of alkyl cellulose ethers, hydroxyalkyl cellulose ethers and hydroxyalkyl alkyl cellulose ethers; (c) from about 0% to about 70% by weight of a detergency builder component; and (d) the balance of the composition comprising detergency adjunct materials and carriers selected from a group consisting of water, water/ethanol mixtures, perfumes, optical bleaches, fillers, anti-caking agents, fabric softeners, perborate bleaches, and enzymes and mixtures thereof.
Claim 3
Dependent Claim
27 words
A composition according to claim 1 characterized by a weight ratio of surfactant component:soil release ether component in the range of from about 5:1 to about 50:1.
Claim 4
Dependent Claim
36 words
A composition according to claim 2 wherein the surfactant component is selected from the group consisting of the alkali metal, ammonium and alkanolammonium salts of C 10 -C 12 linear alkyl benzene sulfonates, and mixtures thereof.
Claim 5
Dependent Claim
55 words
A composition according to claim 2 wherein the surfactant component comprises a mixture of water-soluble C 10 -C 12 linear alkyl benzene sulfonates, wherein the average chain length of the alkyl substituents is in the range from about 10.5 to about 11.4, said mixtures being substantially free of C 13 and higher alkyl benzene sulfonates.
Claim 6
Dependent Claim
24 words
A composition according to claim 4 wherein the mixture of alkyl benzene sulfonates is characterized by an average alkyl chain length of about 11.2.
Claim 7
Dependent Claim
19 words
A composition according to claim 5 wherein the mixture of alkyl benzene sulfonates is in the sodium salt form.
Claim 8
Dependent Claim
28 words
A composition according to claim 2 wherein the soil release ether component is an alkyl cellulose ether having a DS alkyl of from about 1.7 to about 2.7.
Claim 9
Dependent Claim
36 words
A composition according to claim 7 wherein the alkyl cellulose ether is selected from the group consisting of methyl, ethyl, propyl and butyl cellulose ethers having a DS alkyl of from about 1.2 to about 2.9.
Claim 10
Dependent Claim
30 words
A composition according to claim 8 wherein the alkyl cellulose ether is a methyl cellulose ether characterized by a DS methyl in the range from about 2.0 to about 2.7.
Claim 11
Dependent Claim
28 words
A composition according to claim 2 wherein the soil release ether component is a hydroxyalkyl cellulose ether having a DS hydroxyalkyl of from about 1.3 to about 1.7.
Claim 12
Dependent Claim
24 words
A composition according to claim 10 wherein the hydroxyalkyl cellulose ether is selected from the group consisting of hydroxyethyl, hydroxypropyl and hydroxybutyl cellulose ethers.
Claim 13
Dependent Claim
37 words
A composition according to claim 2 wherein the soil release ether componenet is a hydroxyalkyl alkyl cellulose ether having a DS hydroxyalkyl of from about 0.05-1.0 and a DS alkyl of from about 1.3 to about 2.5.
Claim 14
Dependent Claim
42 words
A composition according to claim 12 wherein the hydroxyalkyl substituent in the hydroxyalkyl alkyl cellulose ether is independently selected from the group consisting of hydroxyethyl, hydroxypropyl and hydroxybutyl and wherein the alkyl substituent is independently selected from methyl, ethyl, propyl and butyl.
Claim 15
Dependent Claim
32 words
A composition according to claim 13 wherein the DS alkyl of the cellulose ether is from about 1.8 to about 2.2 and the DS hydroxyalkyl is from about 0.06 to about 1.0.
Claim 16
Dependent Claim
22 words
A granular detergent composition according to claim 2 comprising from about 15% to about 65% by weight of a water-soluble detergency builder.
Claim 17
Dependent Claim
14 words
A composition according to claim 15 wherein the builder is an inorganic detergency builder.
Claim 18
Dependent Claim
13 words
A composition according to claim 16 wherein the inorganic builder is sodium tripolyphosphate.
Claim 19
Dependent Claim
14 words
A composition according to claim 15 wherein the builder is an organic detergency builder.
Claim 20
Dependent Claim
13 words
A composition according to claim 18 wherein the organic builder is sodium nitrilotriacetate.
Claim 21
Dependent Claim
53 words
A composition according to claim 2 wherein the detergency builder is a seeded builder comprising a water-soluble material capable of forming a water-insoluble reaction product with water hardness cation and a crystallization seed having a maximum particle dimension of less than 20 microns and capable of providing growth sides for the reaction product.
Claim 22
Dependent Claim
35 words
A composition according to claim 20 wherein the seeded builder comprises a 30:1 to 5:1 weight mixture of sodium carbonate and particulate calcium carbonate having an average particle diameter from 0.01 microns to 5 microns.
Claim 23
Dependent Claim
13 words
A composition according to claim 2 wherein the detergency builder is substantially water-insoluble.
Claim 24
Dependent Claim
15 words
A composition according to claim 22 wherein the detergency builder is a zeolite builder material.
Claim 25
Dependent Claim
43 words
A liquid detergent composition according to claim 2 wherein the soil release ether component was a viscosity of from about 20 cps to about 250 cps and comprises from about 50% to about 90% of a liquid carrier comprising water and water-alcohol mixtures.
Claim 26
Dependent Claim
38 words
A composition according to claim 2 comprising from about 0.5% to about 1.5% by weight of the soil release ether component, said composition containing less than about 2% by weight of C 13 and higher alkyl benzene sulfonates.
Claim 27
Dependent Claim
30 words
A composition according to claim 7 wherein the alkyl cellulose ether is a methyl cellulose ether characterized by a DS methyl in the range from about 1.8 to about 2.2.
Claim 28
Dependent Claim
41 words
A composition according to claim 14 wherein the hydroxyalkyl alkyl cellulose ether is a methyl hydroxybutyl cellulose characterized by a DS methyl in the range from about 1.8 to about 2.2 and a DS hydroxybutyl of from about 0.08 to 1.0.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-12 | 1983-05-14 | 1983-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-12 | 1987-05-14 | 1987-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-12 | 1991-05-14 | 1991-11-13 | $7700.00 | Window Closed / Lapsed |