US4075129A
Expired / Lapsed
US
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Detergent composition
Assignee: Kao Corp
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Filing: 1976-03-04
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Granted: 1978-02-21
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Expires: 1996-03-04
Abstract
Abstract A detergent composition comprising as all or a part of the active detergent component a mixture comprising (A) up to 70% by weight of unbranched-alkyl ether sulfate, or mixtures thereof, having the formula (I): r.sub.1 --o--(ch.sub.2 ch.sub.2 o).sub.n SO.sub.3 M (I) wherein R 1 is unbranched alkyl (CH 3 (CH 2 ) p --) having a total number of from 6 to 15 carbon atoms and having a carbon atom number distribution such that the average carbon atom number is within the range of from 8 to 13, n is from 0.5 to 1.5 as an average number in the mixture, and M is alkali metal, alkaline earth metal, ammonium or alkanol amine, And (B) at least 30% by weight of a branched alkyl ether sulfate, or mixtures thereof, having the formula (II): ##STR1## wherein R 2 is an unbranched alkyl having 1 to 12 carbon atoms, R 3 is an unbranched alkyl having 1 to 4 carbon atoms, the group ##STR2## having a carbon number distribution such that the average carbon atom number thereof is within the range of from 8 to 13, and n nd M are as defined above for formula (I).
Inventors
- 👤 Moriyasu Murata
- 👤 Makoto Yamanaka
- 👤 Takashi Fujino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:17
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/02; C11D1/37; C11D1/12; C11D1/29
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
232 words
A detergent composition consisting essentially of from 0.5 to 60 percent by weight of ether sulfate surfactant consisting of (A) from 30 to 65 percent by weight of unbranched-alkyl ether sulfate having the formula R.sub.1 --O--(CH.sub.2 CH.sub.2 O).sub.n SO.sub.3 M and (B) the balance is branched-alkyl ether sulfate having the formula ##STR5## wherein R 1 is unbranched alkyl having a carbon atom number range of from 6 to 15 and wherein the average number of carbon atoms in R 1 of (A) in the range of from 8 to 13, R 2 is unbranched alkyl having a carbon atom number range of from one to 12, R 3 is unbranched alkyl having a carbon atom number range of from one to 4, with the proviso that ##STR6## has an average numer of carbon atoms in the range of from 8 to 13, n is a number from 0.5 to 1.5 as an average for (A) and (B), and M is a water-solubilizing cation selected from the group consisting of alkali metals, alkaline earth metals and alkanol amines; and the balance of said detergent composition is water-soluble, anionic surfactant with the proviso that said anionic surfactant is not an ether sulfate, or water-soluble, synthetic, nonionic surfactant, or water-soluble, synthetic, amphoteric surfactant, or water-soluble alkaline or neutral inorganic builder salt, or water-soluble organic heavy metal-sequestering agents, or solubilizing agents, or water, or mixtures thereof.
Claim 2
Dependent Claim
232 words
A detergent composition consisting essentially of from 0.5 to 60 percent by weight of ether sulfate surfactant consisting of (A) from 30 to 65 percent by weight of unbranched-alkyl ether sulfate having the formula R.sub.1 --O--(CH.sub.2 CH.sub.2 O).sub.n SO.sub.3 M and (B) the balance is branched-alkyl ether sulfate having the formula ##STR5## wherein R 1 is unbranched alkyl having a carbon atom number range of from 6 to 15 and wherein the average number of carbon atoms in R 1 of (A) in the range of from 8 to 13, R 2 is unbranched alkyl having a carbon atom number range of from one to 12, R 3 is unbranched alkyl having a carbon atom number range of from one to 4, with the proviso that ##STR6## has an average numer of carbon atoms in the range of from 8 to 13, n is a number from 0.5 to 1.5 as an average for (A) and (B), and M is a water-solubilizing cation selected from the group consisting of alkali metals, alkaline earth metals and alkanol amines; and the balance of said detergent composition is water-soluble, anionic surfactant with the proviso that said anionic surfactant is not an ether sulfate, or water-soluble, synthetic, nonionic surfactant, or water-soluble, synthetic, amphoteric surfactant, or water-soluble alkaline or neutral inorganic builder salt, or water-soluble organic heavy metal-sequestering agents, or solubilizing agents, or water, or mixtures thereof.
Claim 3
Dependent Claim
27 words
A composition as claimed in claim 1, containing from 2.5 to 25 percent by weight of said ether sulfate surfactant, said composition being free of sodium tripolyphosphate.
Claim 4
Dependent Claim
27 words
A composition as claimed in claim 1, being a liquid heavy duty detergent composition containing from 2.5 to 60 percent by weight of said ether sulfate surfactant.
Claim 5
Dependent Claim
20 words
A composition as claimed in claim 1 containing from 10 to 60 percent by weight of said ether sulfate surfactant.
Claim 6
Dependent Claim
78 words
A composition as claimed in claim 1 containing from zero to 40 percent by weight of water-soluble phosphate builder salts, from zero to 20 percent by weight of water-soluble organic heavy metal-sequestering agents selected from the group consisting of nitrilotriacetates, ethylenediamine tetraacetates, citrates, polyacrylates and water-soluble salts of maleic anhydride-vinyl acetate copolymer, and from 5 to 40 percent by weight of alkaline and neutral water-soluble builder salts selected from the group consisting of silicates, carbonates, sulfates and borates.
Claim 7
Dependent Claim
35 words
A composition as claimed in claim 3 containing from one to 20 percent by weight of a solubilizing agent selected from the group consisting of ethanol, methanol, urea, p-toluene sulfonate, xylene sulfonate and naphthalene sulfonate.
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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) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |