Patent US3953380A successfully refreshed from Google Patents.
US3953380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid detergent
Assignee: Colgate Palmolive Co
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Filing: 1973-03-30
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Granted: 1976-04-27
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Expires: 1993-03-30
Abstract
Abstract A clear liquid synthetic organic heavy duty laundry detergent composition includes a condensation product of a higher fatty alcohol and polymeric ethylene oxide, fluorescent brightener, water and lower monohydric alcohol. The liquid detergent composition is biodegradable. The substantial proportion of nonionic condensation product detergent present is prevented from gelling by the alcohol and in turn, aids in solubilizing the fluorescent brightener. In preferred compositions, small proportions of sequestering agents e.g., nitrilotriacetate, and salt-forming base, e.g., monoethanolamine, are also present. Surprisingly, cleaning of soiled laundry is comparable to that obtained with the equivalent quantities of phosphate-containing built detergents, even when the present liquid contains much less than a normal building proportion of nitrilotriacetate or other substitute for the phosphate.
Inventors
- 👤 Bjorn Sundby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:40
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/40; C11D3/42; C11D1/00; C11D1/66; C11D1/72; D; D06; D06L; D06L4/00; D06L4/60; D06L4/664
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
150 words
A clear, concentrated liquid detergent composition suitable for laundry use containing no more than 7% by weight of anionic detergent and being free from inorganic and organic builder salts except in sequestering amounts of up to 3% by weight which consists essentially of by weight from 40 to 75% of a nonionic detergent having the formula RO(C 2 H 4 O) n H, wherein R is a straight chain alkyl of 10 to 18 carbon atoms and n is from 5 to 14, said n being about 0.5 to 1 times the number of carbon atoms in R, (B) 0.5 to 5% of a normally partially water-insoluble fluorescent brightener, (C) 5 to 35% of water, and (D) 5 to 35% of ethanol or isopropanol, with the proportions of (A), (B), (C) and (D) being such that the alkanol-ethylene oxide condensation product solubilizes the fluorescent brightener in the water-alcohol solvent system.
Claim 2
Dependent Claim
150 words
A clear, concentrated liquid detergent composition suitable for laundry use containing no more than 7% by weight of anionic detergent and being free from inorganic and organic builder salts except in sequestering amounts of up to 3% by weight which consists essentially of by weight from 40 to 75% of a nonionic detergent having the formula RO(C 2 H 4 O) n H, wherein R is a straight chain alkyl of 10 to 18 carbon atoms and n is from 5 to 14, said n being about 0.5 to 1 times the number of carbon atoms in R, (B) 0.5 to 5% of a normally partially water-insoluble fluorescent brightener, (C) 5 to 35% of water, and (D) 5 to 35% of ethanol or isopropanol, with the proportions of (A), (B), (C) and (D) being such that the alkanol-ethylene oxide condensation product solubilizes the fluorescent brightener in the water-alcohol solvent system.
Claim 3
Dependent Claim
33 words
A liquid detergent composition according to claim 1 wherein a mixture of fluorescent brighteners for cotton is present, including at least one cotton brightener which is a bistriazinyl derivative of 4,4'-diamino stilbene-2,2'-disulfonic acid.
Claim 4
Dependent Claim
135 words
A liquid detergent composition according to claim 1 wherein (A) is present in an amount of from 45 to 60%, R is of 14 to 15 carbon atoms and n is from 10 to 12, said fluorescent brightener is selected from the group consisting of bistriazinyl derivatives of 4,4'-diaminostilbene-2,2'sulfonic acid, benzidine sulfone disulfonic acid, naphthotriazolylstilbene sulfonic acid, benzimidazolyl derivatives, amino coumarins, pyrazolines, naphthotriazdyl derivatives and mixtures thereof, said alcohol (D) is present in amounts of 5 to 25%, said water is present in amounts of from 5 to 25%, said composition further containing at least 0.2% by weight of nitrilotriacetic acid sequestrant or salt thereof and 0.5 to 8% by weight of an alkaline base which increases the pH of the wash water and aids in solubilizing acid forms of the fluorescent brightener and sequestrant.
Claim 5
Dependent Claim
31 words
A liquid detergent composition according to claim 1 wherein said brightener (B) is a mixture of a. 4,4'-bis(4-anilino-6-[N-(2-hydroxyethyl)-N-(2-carbamoylethyl)amino]-S-triazin-2-ylamino)-2,2'-stilbenedisulfonic acid monoethanolamine salt, b. 4,4'-bis[4-anilino-6-di-(2-hydroxyethyl)amino-5-triazin-2-ylamino]-2,2'-stilbene-disulfonic acid, c. 4-(2H-naphtho]1,2-d]triazolyl)-2-stilbene sulfonic acid, and d. 4-(2H-naphtho[1,2-d]triazolyl-2-stilbene.
Claim 6
Dependent Claim
45 words
A liquid detergent composition according to claim 1 wherein there is present from 5 to 15% by weight of a lower alkylene glycol, the specific gravity is from 0.95 to 1.05 and the pH of a 25% solution in water is from 9.5 to 10.5.
Claim 7
Dependent Claim
65 words
A liquid detergent composition according to claim 5 consisting essentially of about 50% of (A) wherein n is about 5 to 6, R is undecyl and at least 80% of the undecyl groups present are terminally joined to the ethoxy chains, about 2% of (B), about 11% of of ethanol, about 11% of propylene glycol, about 0.8% of nitrilotriacetate sequestrant and about 5% of monoethanolamine.
Claim 8
Dependent Claim
72 words
A liquid detergent composition according to claim 5 consisting essentially of about 50% of (A) wherein n is about 11, R is a mixture of 14 and 15 carbon atom linear alkyls, and at least 80% of the R groups are terminally joined to the ethoxy chains, about 2% of (B), about 11% of said alcohol (D), about 11% of propylene glycol, about 0.8% of nitrilotriacetate sequestrant and about 4% of monoethanolamine.
Claim 9
Dependent Claim
77 words
A method of laundering soiled clothing with a phosphate-free, biodegradable detergent composition with comprises contacting material to be laundered with an aqueous solution of liquid detergent composition of claim 1 at a concentration of 0.5 to 2 grams of the liquid detergent composition per liter of water at a temperature from 10° to 80° C. and a pH from 7.4 to 9 for from 3 minutes to one hour, rinsing the laundry with water and drying it.
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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) | 1979-04-27 | 1979-10-27 | 1980-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-27 | 1983-10-27 | 1984-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-27 | 1987-10-27 | 1988-04-27 | $7700.00 | Window Closed / Lapsed |