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US4297251A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for removing hard-to-remove soils from hardware

Assignee: Procter and Gamble Co
•
Filing: 1977-05-02
•
Granted: 1981-10-27
•
Expires: 1997-05-02
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Abstract

Abstract Stable, single-phase light duty, anionic detergent compositions having a pH of from about 7 to about 9 and containing a vegetable lecithin detergency boosting ingredient which improves the removal of baked on and hard-to-remove soils from housewares, including pots and pans, dishes, glasses, utensils, etc. Process for washing dishes with said compositions. Process for the preparation of said compositions.

Inventors

  • 👤 Lowell W. Bernardino

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 09:06
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/29; C11D1/14; C11D1/146; C11D3/00; C11D3/16; C11D3/36; C11D3/364

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 254 words
The process of removing hard-to-remove soils from housewares including pots, pans, dishes, glasses and utensils using aqueous solutions containing from about 0.1% to about 0.5% of a stable, single-phase light duty liquid detergent composition consisting essentially of: (a) from about 5% to about 35% of a synthetic anionic surfactant having the formula R--(Y) n --(O) n SO 3 M wherein R is a group containing from 8 to about 24 carbon atoms which can be either straight or branched chain, saturated or unsaturated and attached either at the terminal position, a secondary position, or random attachment or mixtures thereof; Y is a group selected from the group consisting of (OC 2 H 4 ) x where x is a number from 1 to 30; (O--CH 2 --CHOH--CH 2 ) m wherein m is a number from 1 to 3; or a benzene ring, each n is either 0 or 1; and M is selected from the group consisting essentially of sodium; potassium; mono-, di-, or trialkanolammonium wherein the alkanol groups contain from 2 to 4 carbon atoms; mono-, di-, or trialkylammonium wherein the alkyl groups contain from 2 to 4 carbon atoms; ammonium; magnesium, calcium; or mixtures thereof; (b) from 0% to about 15% of a suds boosting ingredient selected from the group consisting of amine oxide surfactants and amide surfactants; (c) from 0.8% to about 5% of a detergency boosting ingredient which is a vegetable lecithin; and, (d) water, the pH of the composition being above about 7.5 and less than about 8.5.
Claim 2
Dependent Claim 254 words
The process of removing hard-to-remove soils from housewares including pots, pans, dishes, glasses and utensils using aqueous solutions containing from about 0.1% to about 0.5% of a stable, single-phase light duty liquid detergent composition consisting essentially of: (a) from about 5% to about 35% of a synthetic anionic surfactant having the formula R--(Y) n --(O) n SO 3 M wherein R is a group containing from 8 to about 24 carbon atoms which can be either straight or branched chain, saturated or unsaturated and attached either at the terminal position, a secondary position, or random attachment or mixtures thereof; Y is a group selected from the group consisting of (OC 2 H 4 ) x where x is a number from 1 to 30; (O--CH 2 --CHOH--CH 2 ) m wherein m is a number from 1 to 3; or a benzene ring, each n is either 0 or 1; and M is selected from the group consisting essentially of sodium; potassium; mono-, di-, or trialkanolammonium wherein the alkanol groups contain from 2 to 4 carbon atoms; mono-, di-, or trialkylammonium wherein the alkyl groups contain from 2 to 4 carbon atoms; ammonium; magnesium, calcium; or mixtures thereof; (b) from 0% to about 15% of a suds boosting ingredient selected from the group consisting of amine oxide surfactants and amide surfactants; (c) from 0.8% to about 5% of a detergency boosting ingredient which is a vegetable lecithin; and, (d) water, the pH of the composition being above about 7.5 and less than about 8.5.
Claim 3
Dependent Claim 13 words
The process of claim 1 wherein the detergency boosting ingredients is soybean lecithin.

References Cited (Backward Citations)

US2773835A Cited
US3069361A Cited
US3793233A Cited
US3944663A Cited
US3928249A Cited
US3900421A Cited
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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) 1984-10-26 1985-04-27 1985-10-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-10-26 1989-04-27 1989-10-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-10-26 1993-04-27 1993-10-27 $7700.00 Window Closed / Lapsed

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