US4876035A
Expired / Lapsed
US
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Aqueous preparations of sodium lauryl sulfate and myristyl sulfate having a low cloud point useful in making toothpastes
Assignee: Henkel AG and Co KGaA
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Filing: 1987-06-03
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Granted: 1989-10-24
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Expires: 2007-06-03
Abstract
Abstract Clear, aqueous liquid preparations of sodium lauryl sulfate and myristyl sulfate comprising from 5 to 20% by weight of sodium lauryl sulfate and/or myristyl sulfate, from 10 to 30% by weight of a nonionic surface-active ethylene oxide adduct having an HLB-value of from 12 to 18, from 10 to 20% by weight of a polyol containing from 3 to 6 carbon atoms and from 2 to 6 hydroxyl gropus or a polyethylene glycol, and from 30 to 75% by weight of water, are distinguished by low cloud points and are suitable for use as a surfactant component in the production of oral hygiene products such as toothpastes.
Inventors
- 👤 Willi Breitzke
- 👤 Hermann Hensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:40
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/30; A61K8/33; A61K8/34; A61K8/345; A61K8/46; A61K8/463; C; C09; C09K; C09K23/00; C09K23/017; C09K23/018; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
109 words
A clear, aqueous liquid preparation having a cloud point below about 6° C., said preparation consisting essentially of; from about 5 to about 20% by weight of sodium lauryl sulfate and/or myristyl sulfate, from about 10 to about 30% by weight of a surface-active nonionic ethylene oxide adduct having an HLB-value of from about 12 to about 18, from about 10 to about 20% by weight of a polyol containing from about 3 to about 6 carbon atoms and from about 2 to about 6 hydroxyl groups or a polyethylene glycol, and from about 30 to about 75% by weight of water, based on the weight of the preparation.
Claim 2
Dependent Claim
109 words
A clear, aqueous liquid preparation having a cloud point below about 6° C., said preparation consisting essentially of; from about 5 to about 20% by weight of sodium lauryl sulfate and/or myristyl sulfate, from about 10 to about 30% by weight of a surface-active nonionic ethylene oxide adduct having an HLB-value of from about 12 to about 18, from about 10 to about 20% by weight of a polyol containing from about 3 to about 6 carbon atoms and from about 2 to about 6 hydroxyl groups or a polyethylene glycol, and from about 30 to about 75% by weight of water, based on the weight of the preparation.
Claim 3
Dependent Claim
20 words
A preparation as in claim 1 including a small quantity of sodium-n-alkylsulfate containing 8, 10, 16 or 18 carbon atoms.
Claim 4
Dependent Claim
29 words
A preparation as in claim 1 wherein said nonionic ethylene oxide adduct comprises the addition product of ethylene oxide with a fatty acid or a fatty acid-polyol partial ester.
Claim 5
Dependent Claim
23 words
A preparation as in claim 1 wherein said nonionc ethylene oxide adduct comprises the ethyoxylation product of castor oil or hydrogenated castor oil.
Claim 6
Dependent Claim
36 words
A preparation as in claim 1 wherein said nonionic ethylene oxide adduct comprises a C 12 -C 22 fatty alcohol, a fatty acid amide or alkanolamide, or an alkylphenol containing C 8 -C 12 alkyl groups.
Claim 7
Dependent Claim
43 words
A preparation as in claim 1 wherein the ratio by weight of hydrophilic to lipophilic groups in said ethylene oxide adduct is such that the weight of hydrophilic glycol ether groups is from about 60 to about 80% by weight of said adduct.
Claim 8
Dependent Claim
22 words
A preparation as in claim 1 wherein said polyethylene glycol has an average molecular weight of from about 200 to about 700.
Claim 9
Dependent Claim
15 words
A preparation as in claim 1 wherein said polyol is selected from glycerol and sorbitol.
Claim 10
Dependent Claim
77 words
A preparation as in claim 1 consisting essentially of; from about 8 to about 12% by weight of a sodium laurylmyristyl sulfate, from about 20 to about 25% by weight of a castor oil ethoxylate containing from 60 to 70% by weight of glycol ether groups, from about 12 to about 18% by weight glycerol, sorbitol or a polyethylene glycol, and from about 45 to about 60% by weight water, based on the weight of the preparation.
Claim 11
Dependent Claim
109 words
A process of preparing an oral hygiene composition comprising adding to said oral hygiene composition a clear, aqueous liquid preparation having a cloud point below about 6° C., and consisting essentially of; from 5 to 20% by weight of sodium lauryl sulfate and/or myristyl sulfate, from 10 to 30% by weight of a surface-active, nonionic ethylene oxide adduct having an HLB-value of from 12 to 18, from 10 to 20% by weight of a polyol containing from 3 to 6 carbon atoms and from 2 to 6 hydroxyl groups or a polyethylene glycol, and from 30 to 75% by weight of water, based on the weight of said preparation.
Claim 12
Dependent Claim
109 words
A process of preparing an oral hygiene composition comprising adding to said oral hygiene composition a clear, aqueous liquid preparation having a cloud point below about 6° C., and consisting essentially of; from 5 to 20% by weight of sodium lauryl sulfate and/or myristyl sulfate, from 10 to 30% by weight of a surface-active, nonionic ethylene oxide adduct having an HLB-value of from 12 to 18, from 10 to 20% by weight of a polyol containing from 3 to 6 carbon atoms and from 2 to 6 hydroxyl groups or a polyethylene glycol, and from 30 to 75% by weight of water, based on the weight of said preparation.
Claim 13
Dependent Claim
20 words
A process as in claim 10 including a small quantity of sodium-n-alkylsulfate containing 8, 10, 16 or 18 carbon atoms.
Claim 14
Dependent Claim
29 words
A process as in claim 10 wherein said nonionic ethylene oxide adduct comprises the addition product of ethylene oxide with a fatty acid or a fatty acid-polyol partial ester.
Claim 15
Dependent Claim
23 words
A process as in claim 10 wherein said nonionic ethylene oxide adduct comprises the ethoxylation product of castor oil or hydrogenated castor oil.
Claim 16
Dependent Claim
36 words
A process as in claim 10 wherein said nonionic ethylene oxide adduct comprises a C 12 -C 22 fatty alcohol, a fatty acid amide or alkanolamide, or an alkylphenol containing C 8 -C 12 alkyl groups.
Claim 17
Dependent Claim
43 words
A process as in claim 10 wherein the ratio by weight of hydrophilic to lipophilic groups in said ethylene oxide adduct is such that the weight of hydrophilic glycol ether groups is from about 60 to about 80% by weight of said adduct.
Claim 18
Dependent Claim
22 words
A process as in claim 10 wherein said polyethylene glycol has an average molecular weight of from about 200 to about 700.
Claim 19
Dependent Claim
15 words
A process as in claim 10 wherein said polyol is selected from glycerol and sorbitol.
Claim 20
Dependent Claim
79 words
A process as in claim 10 wherein said liquid preparation consists essentially of; from about 8 to about 12% by weight of sodium lauryl-myristyl sulfate, from about 20 to about 25% by weight of a castor oil ethoxylate containing from 60 to 70% by weight of glycol ether groups, from about 12 to about 18% by weight glycerol, sorbitol or polyethylene glycol, and from about 45 to about 60% by weight water, based on the weight of said preparation.
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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) | 1992-10-23 | 1993-04-24 | 1993-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-23 | 1997-04-24 | 1997-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-23 | 2001-04-24 | 2001-10-24 | $7700.00 | Window Closed / Lapsed |