Patent US5318728A successfully refreshed from Google Patents.
US5318728A
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US
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Low sudsing polyhydroxy fatty acid amide detergents
Assignee: Procter and Gamble Co
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Filing: 1992-11-30
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Granted: 1994-06-07
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Expires: 2012-11-30
Abstract
Abstract Low-sudsing detergent compositions comprise an N-alkyl polyhydroxy fatty acid amide surfactant, wherein the N-alkyl substituent is at least C2, preferably C3-C8. Such compositions are useful under cleaning conditions where excessive sudsing may be problematic.
Inventors
- 👤 Athanasios Surutzidis
- 👤 Jean-Pol Boutique
- 👤 Yi-Chang Fu
- 👤 Bruce P. Murch
- 👤 Daniel S. Connor
- 👤 Jeffrey J. Scheibel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:40
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0026; C11D1/00; C11D1/38; C11D1/52; C11D1/525; C11D1/65; C11D1/652; C11D1/02; C11D1/12; C11D1/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A method for cleaning fabrics in an automatic washing machine without excess sudsing, comprising contacting the fabrics to be laundered with an aqueous solution comprising at least 100 ppm of a low sudsing detergent composition which comprises at least about 2% by weight of an N-hexyl polyhydroxy fatty acid amide surfactant of the formula ##STR2## wherein R 1 is hexyl, R 2 is C 9 -C 17 alkyl and Z is --(CH 2 (CHOH) 4 CH 2 OH and from about 3% to about 60% by weight of an auxiliary anionic surfactant selected from the group consisting of C 11 -C 16 alkyl benzene sulfonates, C 12 -C 18 primary and secondary alkyl and alkenyl sulfates, and C 10 -C 18 alkyl alkoxy sulfates.
Claim 2
Independent Claim
124 words
A method for cleaning fabrics in an automatic washing machine without excess sudsing, comprising contacting the fabrics to be laundered with an aqueous solution comprising at least 100 ppm of a low sudsing detergent composition which comprises at least about 2% by weight of an N-hexyl polyhydroxy fatty acid amide surfactant of the formula ##STR2## wherein R 1 is hexyl, R 2 is C 9 -C 17 alkyl and Z is --(CH 2 (CHOH) 4 CH 2 OH and from about 3% to about 60% by weight of an auxiliary anionic surfactant selected from the group consisting of C 11 -C 16 alkyl benzene sulfonates, C 12 -C 18 primary and secondary alkyl and alkenyl sulfates, and C 10 -C 18 alkyl alkoxy sulfates.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-06-06 | 1997-12-06 | 1998-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-06 | 2001-12-06 | 2002-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-06 | 2005-12-06 | 2006-06-07 | $7700.00 | Window Closed / Lapsed |