US4375422A
Expired / Lapsed
US
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Homogeneous detergent containing nonionic and surface active iminodipropionate
Assignee: Lever Brothers Co
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Filing: 1981-11-12
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Granted: 1983-03-01
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Expires: 2001-11-12
Abstract
Abstract This invention relates to a detergent composition and a method for substantially eliminating separation of nonionic from a detergent slurry. The composition consists essentially of: (a) about 10%-60% builder; (b) about 2%-25% nonionic surfactant; (c) 0% to about 30% other ingredients; (d) an effective amount to substantially prevent separation of the nonionic from the detergent composition of a surface active iminodipropionate of the general formula: ##STR1## wherein R is an alkyl, hydroxyalkyl or oxyalkyl group containing from about 10 to about 18 carbon atoms and M is an alkali metal cation; and (e) the remainder water.
Inventors
- 👤 Paul C. Blackstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:09
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/26; C11D3/33; C11D1/00; C11D1/66
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
57 words
A method of preparing an aqueous detergent slurry consisting essentially of adding an effective amount of a surface active iminodipropionate to a mixture comprising about 10%-60% builder, about 2%-25% nonionic surfactant and 0% to about 30% other ingredients whereby said nonionic surfactant is substantially prevented from separating out of said detergent slurry by said surface active iminodipropionate.
Claim 2
Independent Claim
57 words
A method of preparing an aqueous detergent slurry consisting essentially of adding an effective amount of a surface active iminodipropionate to a mixture comprising about 10%-60% builder, about 2%-25% nonionic surfactant and 0% to about 30% other ingredients whereby said nonionic surfactant is substantially prevented from separating out of said detergent slurry by said surface active iminodipropionate.
Claim 3
Dependent Claim
39 words
A method according to claim 1 wherein said iminodipropionate has the general formula: ##STR5## wherein R is an alkyl, hydroxyalkyl or alkoxyalkyl group containing from about 10 to about 18 carbon atoms and M is an alkali metal cation.
Claim 4
Dependent Claim
43 words
A method according to claim 1 wherein said iminodipropionate is selected from the group consisting of alkali metal salts of N-alkyl iminodipropionic acid, N-alkoxyalkyl iminodipropionic acid and mixtures thereof, wherein said alkyl and said alkoxyalkyl groups contain about 10 to 18 carbon atoms.
Claim 5
Dependent Claim
15 words
A method according to claim 1 wherein the amount of said iminodipropionate is about 0.5%.
Claim 6
Dependent Claim
15 words
A method according to claim 1 wherein the amount of said iminodipropionate is about 0.1%.
Claim 7
Dependent Claim
19 words
A method of preparing a detergent composition consisting essentially of drying a detergent slurry prepared according to claim 1.
Claim 8
Dependent Claim
12 words
A method according to claim 6 wherein said drying is spray drying.
Claim 9
Dependent Claim
9 words
A product prepared by the method of claim 7.
Claim 10
Dependent Claim
9 words
A product prepared by the method of claim 1.
Claim 11
Dependent Claim
9 words
A product prepared by the method of claim 2.
Claim 12
Dependent Claim
31 words
A product prepared by the method of claim 1 wherein said builder is selected from the group consisting of alkali metal phosphates, carbonates, citrates, silicates, nitrilotriacetates, carboxymethyloxysuccinates, zeolites and mixtures thereof.
Claim 13
Dependent Claim
32 words
A product prepared by the method of claim 1 wherein said nonionic surfactant is selected from the group consisting of primary alcohol ethoxylates, secondary alcohol ethoxylates, alkyl phenol ethoxylates and mixtures thereof.
Claim 14
Dependent Claim
43 words
A product prepared by the method of claim 1 wherein said other ingredient is selected from the group consisting of soaps, suds stabilizers, coloring dyes, organic solvents, fluorescent dyes, co-surfactants, carboxymethylcellulose, enzymes, neutralized copolymers of ethylene and maleic anhydrides, perfumes, and mixtures thereof.
Claim 15
Dependent Claim
48 words
A product prepared by the method of claim 1 wherein said surface active iminodipropionate is selected from the group consisting of alkali metal salts of N-alkyl iminodipropionic acid, N-alkoxyalkyl iminodipropionic acid and mixtures thereof, wherein said alkyl and said alkoxyalkyl group contain about 10 to 18 carbon atoms.
Claim 16
Dependent Claim
26 words
A product prepared by the method of claim 1 wherein said co-surfactant is selected from the group consisting of anionic, cationic, zwitterionic surfactants and mixtures thereof.
Claim 17
Dependent Claim
19 words
A product prepared by the method of claim 2 wherein said R is a n-C 12 H 25 moiety.
Claim 18
Dependent Claim
19 words
A product prepared by the method of claim 2 wherein said R is a n-C 14 H 29 moiety.
Claim 19
Dependent Claim
9 words
A product prepared by the method of claim 4.
Claim 20
Dependent Claim
9 words
A product prepared by the method of claim 5.
Claim 21
Dependent Claim
9 words
A product prepared by the method of claim 6.
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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) | 1986-02-28 | 1986-08-30 | 1987-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-28 | 1990-08-30 | 1991-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-28 | 1994-08-30 | 1995-03-01 | $7700.00 | Window Closed / Lapsed |