Patent US4397776A successfully refreshed from Google Patents.
US4397776A
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Liquid detergent compositions containing alpha-amine oxide surfactants
Assignee: Procter and Gamble Co
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Filing: 1981-03-17
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Granted: 1983-08-09
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Expires: 2001-03-17
Abstract
Abstract Liquid detergent compositions containing alpha-amine oxide surfactants and having a pH of from about 9.0 to about 13.0 are disclosed. The alpha-amine oxides have improved stability against metal-catalyzed decomposition in the present compositions. The compositions preferably contain heavy-metal chelating agents, and also other surfactants and detergent adjunct materials.
Inventors
- 👤 James F. Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:22
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/75; C11D1/02; C11D1/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
149 words
A liquid detergent composition having a pH of from about 9.0 to about 13.0, comprising: (a) from about 0.005% to about 40% by weight of an amine oxide surfactant of the formula ##STR2## wherein R 1 is hydrogen or a C 1 -C 20 hydrocarbyl group; each R 2 is a C 1 -C 20 hydrocarbyl group or a C 2 -C 3 alkylene oxide group containing from 1 to about 10 alkylene oxide units; and X is hydrogen or a water-soluble metal, ammonium or substituted ammonium cation; provided that the total number of carbon atoms in hydrocarbyl groups at the R 1 and R 2 substituents is from about 8 to about 36; and (b) from about 0.001% to about 35% by weight of a heavy-metal chelating agent selected from the group consisting of alkali-metal, ammonium and substituted ammonium polycarboxylates, aminopolycarboxylates, polyphosphonates, aminopolyphosphonates, and polyphosphates, and mixtures thereof.
Claim 2
Dependent Claim
149 words
A liquid detergent composition having a pH of from about 9.0 to about 13.0, comprising: (a) from about 0.005% to about 40% by weight of an amine oxide surfactant of the formula ##STR2## wherein R 1 is hydrogen or a C 1 -C 20 hydrocarbyl group; each R 2 is a C 1 -C 20 hydrocarbyl group or a C 2 -C 3 alkylene oxide group containing from 1 to about 10 alkylene oxide units; and X is hydrogen or a water-soluble metal, ammonium or substituted ammonium cation; provided that the total number of carbon atoms in hydrocarbyl groups at the R 1 and R 2 substituents is from about 8 to about 36; and (b) from about 0.001% to about 35% by weight of a heavy-metal chelating agent selected from the group consisting of alkali-metal, ammonium and substituted ammonium polycarboxylates, aminopolycarboxylates, polyphosphonates, aminopolyphosphonates, and polyphosphates, and mixtures thereof.
Claim 3
Dependent Claim
19 words
A composition according to claim 1 comprising from about 0.01% to about 25% by weight of the chelating agent.
Claim 4
Dependent Claim
19 words
A composition according to claim 2 comprising from about 0.1% to about 15% by weight of the chelating agent.
Claim 5
Dependent Claim
30 words
A composition according to claim 1 wherein the chelating agent is the sodium or potassium salt of nitrilotriacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid or N(hydroxyethyl) ethylenediaminetriacetic acid, or mixtures thereof.
Claim 6
Dependent Claim
26 words
A composition according to claim 4, wherein the chelating agent is the sodium or potassium salt of diethylenetriaminepentaacetic acid or N(hydroxyethyl) ethylenediametriacetic acid, or mixtures thereof.
Claim 7
Dependent Claim
19 words
A composition according to claim 1 comprising from about 0.1% to about 1% by weight of the chelating agent.
Claim 8
Dependent Claim
30 words
A composition according to claim 1 comprising from about 3% to about 20% by weight of sodium or potassium nitrilotriacetate, sodium or potassium citrate, or potassium pyrophosphate, or mixtures thereof.
Claim 9
Dependent Claim
32 words
A composition according to claim 7 further comprising from about 0.1% to about 1% by weight of the sodium or potassium salt of diethylenetriaminepentaacetic acid or N(hydroxyethyl) ethylenediametriacetic acid, or mixtures thereof.
Claim 10
Dependent Claim
18 words
A composition according to claims 1 or 5 having a pH of from about 10.0 to about 12.0.
Claim 11
Dependent Claim
32 words
A composition according to claim 9 wherein R 1 is a C 10 -C 16 alkyl group, each R 2 is a methyl, ethyl, 2-hydroxyethyl or 2-hydroxypropyl group, and X is sodium.
Claim 12
Dependent Claim
28 words
A composition according to claim 1 further comprising from about 0.005% to about 40% by weight of an anionic, cationic, nonionic, ampholytic, or zwitterionic cosurfactant, or mixtures thereof.
Claim 13
Dependent Claim
18 words
A composition according to claim 11 comprising from about 5% to about 20% by weight of the cosurfactant.
Claim 14
Dependent Claim
54 words
A composition according to claim 11 wherein the cosurfactant is an ethoxylated alcohol or alkyl phenol of the formula R(OCH 2 CH 2 ) n OH, wherein R is a C 8 -C 18 hydrocarbyl group or a C 8 -C 15 alkyl phenol group and n is from about 3 to about 12.
Claim 15
Dependent Claim
25 words
A composition according to claim 13 wherein R is a C 9 -C 15 alkyl group and n is from about 4 to about 8.
Claim 16
Dependent Claim
32 words
A composition according to claim 14 wherein R 1 is a C 10 -C 16 alkyl group, each R 2 is a methyl, ethyl, 2-hydroxyethyl or 2-hydroxypropyl group, and X is sodium.
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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) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |