Patent US4654159A successfully refreshed from Google Patents.
US4654159A
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Ether hydroxypolycarboxylate detergency builders
Assignee: Procter and Gamble Co
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Filing: 1985-07-11
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Granted: 1987-03-31
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Expires: 2005-07-11
Abstract
Abstract Ether hydroxypolycarboxylates prepared from epoxysuccinates by treatment with an alkaline calcium compound are disclosed. These compounds act as sequestering agents and are useful as detergency builders. Detergent compositions incorporating the ether hydroxypolycarboxylates can be prepared without use of detergent builder components containing phosphorus or nitrogen.
Inventors
- 👤 Rodney D. Bush
- 👤 Stephen W. Heinzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:17
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/2075; C11D3/2089; C07; C07C; C07C59/00; C07C59/235; C07C59/305; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/22
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
96 words
Metal sequestering agent mixtures represented by the chemical structure ##STR11## wherein M is hydrogen or a cation wherein the resultant salt is water soluble, each R is the same or different and is selected from hydrogen, C 1-4 alkyl or C 1-4 substituted alkyl and n is from about 2 to about 15, provided that at least about 25% by weight are compounds wherein n is from about 2 to about 4, and further provided that said mixtures have a log K Ca (35° C., 0.1M ionic strength) of at least about 4.5 at pH 9.5.
Claim 2
Dependent Claim
96 words
Metal sequestering agent mixtures represented by the chemical structure ##STR11## wherein M is hydrogen or a cation wherein the resultant salt is water soluble, each R is the same or different and is selected from hydrogen, C 1-4 alkyl or C 1-4 substituted alkyl and n is from about 2 to about 15, provided that at least about 25% by weight are compounds wherein n is from about 2 to about 4, and further provided that said mixtures have a log K Ca (35° C., 0.1M ionic strength) of at least about 4.5 at pH 9.5.
Claim 3
Dependent Claim
14 words
Mixtures according to claim 1 wherein n is from about 2 to about 10.
Claim 4
Dependent Claim
20 words
Mixtures according to claim 2 wherein the average n on a weight basis is from about 2 to about 4.
Claim 5
Dependent Claim
10 words
Mixtures according to claim 2 wherein M is alkali metal.
Claim 6
Dependent Claim
9 words
Mixtures according to claim 2 wherein R is hydrogen.
Claim 7
Dependent Claim
108 words
A detergent composition comprising from about 0.5% to about 98% by weight of a surfactant and from about 2% to about 99.5% by weight of metal sequestering agent mixtures represented by the chemical structure ##STR12## wherein M is hydrogen, alkali metal, ammonium or substituted ammonium, R is hydrogen, C 1-4 alkyl or C 1-4 substituted alkyl, and n is from about 2 to about 15, provided that at least about 25% by weight are compounds wherein n is from about 2 to about 4, and further provided that said mixtures have a log K Ca (35° C., 0.1M ionic strength) of at least about 4.5 at pH 9.5.
Claim 8
Dependent Claim
108 words
A detergent composition comprising from about 0.5% to about 98% by weight of a surfactant and from about 2% to about 99.5% by weight of metal sequestering agent mixtures represented by the chemical structure ##STR12## wherein M is hydrogen, alkali metal, ammonium or substituted ammonium, R is hydrogen, C 1-4 alkyl or C 1-4 substituted alkyl, and n is from about 2 to about 15, provided that at least about 25% by weight are compounds wherein n is from about 2 to about 4, and further provided that said mixtures have a log K Ca (35° C., 0.1M ionic strength) of at least about 4.5 at pH 9.5.
Claim 9
Dependent Claim
33 words
The composition of claim 6 which comprises from about 5% to about 30% by weight of a surfactant and from about 2% to about 50% by weight of said metal sequestering agent mixtures.
Claim 10
Dependent Claim
36 words
The composition of claim 6 in granular form which comprises from about 10% to about 25% by weight of a surfactant and from about 4% to about 50% by weight of said metal sequestering agent mixtures.
Claim 11
Dependent Claim
53 words
The composition of claim 6 in liquid form which comprises from about 10% to about 20% by weight of non-soap surfactants, from about 8% to about 20% by weight of C 8 -C 24 mono- or di-carboxylic acids and from about 2% to about 15% by weight of said metal sequestering agent mixtures.
Claim 12
Dependent Claim
23 words
The composition according to claim 6 wherein M is alkali metal, R is hydrogen and n is from about 2 to about 10.
Claim 13
Dependent Claim
23 words
A composition according to claim 6 additionally comprising from about 5% to about 35% by weight of inorganic or organic peroxy bleaching agent.
Claim 14
Dependent Claim
21 words
A composition according to claim 11 additionally comprising from about 0.5% to about 10% by weight of organic peroxyacid bleach precursor.
Claim 15
Dependent Claim
71 words
A composition according to claim 12 wherein the bleach precursor has the general formula: ##STR13## wherein R is an alkyl group containing from 6 to 12 carbon atoms wherein the longest linear alkyl chain extending from and including the carboxyl carbon contains from 5 to 10 carbon atoms and L is a leaving group, the conjugate acid of which has a logarithmic acidity constant in the range from 6 to 13.
Claim 16
Independent Claim
90 words
A method of making ether hydroxypolycarboxylate metal sequestering agent compounds represented by the formula: ##STR14## wherein M is hydrogen or a salt forming cation and n is from about 2 to about 15, which comprises: (1) treatment of an epoxysuccinate or an epoxysuccinate in admixture with a tartrate with at least about 5% of a molar equivalent of an alkaline calcium compound in aqueous media to form alkali metal and/or calcium salts of said ether hydroxypolycarboxylate sequestering agent compounds and (2) separation of said salts from the aqueous reaction media.
Claim 17
Independent Claim
90 words
A method of making ether hydroxypolycarboxylate metal sequestering agent compounds represented by the formula: ##STR14## wherein M is hydrogen or a salt forming cation and n is from about 2 to about 15, which comprises: (1) treatment of an epoxysuccinate or an epoxysuccinate in admixture with a tartrate with at least about 5% of a molar equivalent of an alkaline calcium compound in aqueous media to form alkali metal and/or calcium salts of said ether hydroxypolycarboxylate sequestering agent compounds and (2) separation of said salts from the aqueous reaction media.
Claim 18
Dependent Claim
20 words
The method of claim 14 which comprises a subsequent ion exchange step such that M is H or alkali metal.
Claim 19
Dependent Claim
28 words
A method for laundering fabrics comprising the agitation of said fabrics in an aqueous solution containing from about 0.1% to about 1% of the composition of claim 6.
Claim 20
Dependent Claim
28 words
A method for laundering fabrics comprising the agitation of said fabrics in an aqueous solution containing from about 0.1% to about 1% of the composition of claim 10.
Claim 21
Dependent Claim
9 words
Mixtures prepared according to the method of claim 14.
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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) | 1990-03-30 | 1990-09-29 | 1991-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-30 | 1994-09-29 | 1995-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-30 | 1998-09-29 | 1999-03-31 | $7700.00 | Window Closed / Lapsed |