Patent US5238965A successfully refreshed from Google Patents.
Patent US5352387A successfully refreshed from Google Patents.
US5352387A
Expired / Lapsed
US
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Alkyl glyceramide surfactants and compositions comprising these surfactants
Assignee: Lever Brothers Co
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Filing: 1992-11-25
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Granted: 1994-10-04
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Expires: 2012-11-25
Abstract
Abstract The present invention relates to novel surfactants based on readily available materials, i.e., glyceric acid. In particular, it relates to novel N-alkylglyceramide surfactants having the formula <IMAGE> wherein R is a C8-C24 straight or branch-chained, saturated or unsaturated aliphatic hydrocarbon. These surfactants can be used in detergent compositions as surfactants together with cosurfactants to greatly enhance foam stability of the detergent compositions.
Inventors
- 👤 Mohammad A. Rahman
- 👤 Shang-Ren Wu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:16
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/38; C11D1/52; C11D1/525; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/42; A61K8/68; A61Q; A61Q11/00; A61Q19/00; A61Q19/10; A61Q5/00; A61Q5/02; A61Q9/00; A61Q9/02; C07; C07C; C07C235/00; C07C235/02; C07C235/04; C07C235/06; C11D3/00; C11D3/0005; C11D3/0094
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
67 words
A detergent composition comprising a detergent active system comprising a cosurfactant and alkyl glyceramide having the formula: ##STR4## wherein R is a C 8 or greater than about C 8 straight-chain, saturated or unsaturated aliphatic hydrocarbon; wherein said alkylglyceramide comprises 25-90% by wt. of the active system and the balance of the active system comprises a cosurfactant which cosurfactant is an alkali metal alkyl sulfate anionic surfactant.
Claim 2
Dependent Claim
67 words
A detergent composition comprising a detergent active system comprising a cosurfactant and alkyl glyceramide having the formula: ##STR4## wherein R is a C 8 or greater than about C 8 straight-chain, saturated or unsaturated aliphatic hydrocarbon; wherein said alkylglyceramide comprises 25-90% by wt. of the active system and the balance of the active system comprises a cosurfactant which cosurfactant is an alkali metal alkyl sulfate anionic surfactant.
Claim 3
Dependent Claim
13 words
A Composition according to claim 1, wherein the cosurfactant is sodium dodecyl sulfate.
Claim 4
Dependent Claim
82 words
A detergent compositions comprising a detergent active system comprising a cosurfactant and alkyl glyceramide having the formula: ##STR5## wherein R is a C 8 or greater than about C 8 straight chain, saturated or unsaturated aliphatic hydrocarbon interrupted by a heteroatom selected from the group consisting of oxygen, nitrogen and sulfur; wherein said alkylglyceramide comprises 25-90% by wt. of the active system and the balance of the active system comprises a cosurfactant which cosurfactant is an alkali metal alkyl sulfate anionic surfactant.
Claim 5
Dependent Claim
82 words
A detergent compositions comprising a detergent active system comprising a cosurfactant and alkyl glyceramide having the formula: ##STR5## wherein R is a C 8 or greater than about C 8 straight chain, saturated or unsaturated aliphatic hydrocarbon interrupted by a heteroatom selected from the group consisting of oxygen, nitrogen and sulfur; wherein said alkylglyceramide comprises 25-90% by wt. of the active system and the balance of the active system comprises a cosurfactant which cosurfactant is an alkali metal alkyl sulfate anionic surfactant.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1997-10-03 | 1998-04-04 | 1998-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-03 | 2002-04-04 | 2002-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-03 | 2006-04-04 | 2006-10-04 | $7700.00 | Window Closed / Lapsed |