US4368146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light duty hand dishwashing liquid detergent composition
Assignee: Lever Brothers Co
•
Filing: 1981-06-10
•
Granted: 1983-01-11
•
Expires: 2001-06-10
Abstract
Abstract The present invention relates to light duty, hand dishwashing, liquid composition comprising (a) an anionic surface active agent, a nonionic surface active agent, or mixtures thereof; (b) a polyvinylpyrrolidone having a molecular weight equal to or greater than 40,000, a copolymer of N-vinylpyrrolidone and dimethylamino-ethylmethacrylate having a molecular weight from about 40,000 to about 1,500,000, or mixtures thereof, and optionally, (c) an alkali metal salt of casein. The compositions according to the invention possess drainage modification characteristics that produce rapid and uniform drainage of rinse water from washed utensils and apparatus without the disadvantages of spotting and filming.
Inventors
- 👤 Michael P. Aronson
- 👤 Edilia A. Larrauri
- 👤 Zahera J. Hussain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:35
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3769; C11D3/3776; C11D3/38; C11D3/384
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
94 words
A method for cleaning kitchen utensils comprising treating said utensils with a liquid detergent composition containing: (a) from about 1% to about 50% by weight of an anionic surfactant compound, nonionic surfactant compound, or mixtures thereof; (b) from about 0.1% to about 10% by weight of a polyvinylpyrrolidone having a molecular weight equal to or greater than 40,000, a copolymer of N-vinylpyrrolidone and dimethylaminoethyl methacrylate having a molecular weight from about 40,000 to about 1,500,000, or mixtures thereof; and (c) from 0 to about 5% by weight of an alkali metal salt of casein.
Claim 2
Independent Claim
94 words
A method for cleaning kitchen utensils comprising treating said utensils with a liquid detergent composition containing: (a) from about 1% to about 50% by weight of an anionic surfactant compound, nonionic surfactant compound, or mixtures thereof; (b) from about 0.1% to about 10% by weight of a polyvinylpyrrolidone having a molecular weight equal to or greater than 40,000, a copolymer of N-vinylpyrrolidone and dimethylaminoethyl methacrylate having a molecular weight from about 40,000 to about 1,500,000, or mixtures thereof; and (c) from 0 to about 5% by weight of an alkali metal salt of casein.
Claim 3
Dependent Claim
26 words
The method according to claim 1 wherein component (c) is present in an amount of from 0.5 to about 5% by weight of the total composition.
Claim 4
Dependent Claim
11 words
The method of claim 2 wherein component (c) is sodium caseinate.
Claim 5
Dependent Claim
21 words
The method of claim 1 wherein component (b) is a polyvinylpyrrolidone having a molecular weight equal to or greater than 40,000.
Claim 6
Dependent Claim
27 words
The method of claim 1 wherein component (b) is a copolymer of N-vinylpyrrolidone and dimethylaminoethyl methacrylate having a molecular weight of from about 40,000 to about 1,500,000.
Claim 7
Dependent Claim
68 words
The method of claim 1 wherein the anionic surfactant is a water-soluble hydrocarbon sulfate having the formula R 1 O(C 2 H 4 O) n SO 3 M wherein R 1 is a straight or branched, saturated or unsaturated, aliphatic hydrocarbon radical having from 8 to 22 carbon atoms; n is an integer from 0 to about 15; and M is a cation of sodium, potassium or ammonium.
Claim 8
Dependent Claim
27 words
The method of claim 6 wherein R 1 is an alkyl group having 12 to 14 carbon atoms and n is an integer from 2 to 5.
Claim 9
Dependent Claim
9 words
The method of claim 7 wherein M is ammonium.
Claim 10
Dependent Claim
60 words
The method of claim 1 wherein the anionic surfactant is a compound of the formula R.sub.2 --SO.sub.3 M wherein R 2 is a straight or branched, saturated or unsaturated, aliphatic hydrocarbon radical having from 8 to 24 carbon atoms, or an alkyl benzene radical having from 8 to 18 carbon atoms in the alkyl group; and M is a cation.
Claim 11
Dependent Claim
26 words
The method of claim 9 wherein R 2 is a straight or branched, saturated or unsaturated, aliphatic hydrocarbon radical having from 11 to 18 carbon atoms.
Claim 12
Dependent Claim
24 words
The method of claim 9 wherein R 2 is an alkyl benzene radical having from 11 to 16 carbon atoms in the alkyl group.
Claim 13
Dependent Claim
14 words
The method of claim 9 wherein M is sodium, potassium, ammonium, magnesium or calcium.
Claim 14
Dependent Claim
9 words
The method of claim 12 wherein M is ammonium.
Claim 15
Dependent Claim
24 words
The method of claim 9 wherein R 2 is an alkyl benzene radical having from 11 to 18 carbon atoms, and M is ammonium.
Claim 16
Dependent Claim
74 words
The method of claim 1 wherein the nonionic surfactant is a water-soluble tertiary amine oxide having the general formula R.sub.3 R.sub.4 R.sub.5 N--O wherein R 3 represents a high molecular straight or branched, saturated or unsaturated, aliphatic hydrocarbon, hydroxyhydrocarbon, or alkyloxyhydrocarbon radical, having a total of 8 to 24 carbon atoms, and R 4 and R 5 , which may be the same or different, represent each a methyl, ethyl, hydroxymethyl or hydroxyethyl radical.
Claim 17
Dependent Claim
73 words
The method of claim 1 wherein the nonionic surfactant is a comound of the formula R.sub.3 R.sub.4 R.sub.5 P--O wherein R 3 represents a high molecular, straight or branched, saturated or unsaturated, aliphatic hydrocarbon, hydroxyhydrocarbon, or alkyloxyhydrocarbon radical, having a total of from about 8 to about 24 carbon atoms; and R 4 and R 5 , which may be the same or different, represent each a methyl, ethyl, hydroxymethyl or hydroxyethyl radical.
Claim 18
Dependent Claim
56 words
The method of claim 1 wherein the nonionic surfactant is a comound of the formula R.sub.6 --CO--N(H).sub.m-1 (R.sub.7 OH).sub.3-m wherein R 6 is a saturated or unsaturated, aliphatic hydrocarbon radical having from about 7 to about 21 carbon atoms; R 7 is a methylene or ethylene group; and m is an integer from 1 to 3.
Claim 19
Dependent Claim
29 words
The method of claim 17 wherein R 6 has about 11 to about 17 carbon atoms, R 7 is a ethylene group, and m is an integer of 1.
Claim 20
Dependent Claim
12 words
The method of claim 17 wherein the nonionic surfactant is lauryl diethanolamide.
Claim 21
Dependent Claim
44 words
The method of claim 1 wherein the nonionic surfactant is a water-soluble condensation product of from about 3 to about 25 moles of an alkylene oxide and 1 mole of an organic, hydrophobic aliphatic or alkyl compound having at least one reactive hydrogen atom.
Claim 22
Dependent Claim
74 words
The method of claim 1 wherein the nonoinic surfactant is a water-soluble condensation product of ethylene oxide with (a) an aliphatic alcohol having from about 10 to about 18 carbon atoms; (b) an alkylphenol; (c) a fatty acid ester; (d) a polyethenoxy ester or an ester formed by reacting ethylene oxide with a carboxylic acid; (e) a fatty acyl alkanolamide; or (f) a C 8-18 alkyl-, C 8-18 alkenyl-, or C 5-8 alkylaryl amine.
Claim 23
Independent Claim
114 words
A method for cleaning kitchen utensils comprising treating said utensils with a composition containing: (a) from about 10% to about 30% of an anionic surfactant compound, or a mixture of anionic surfactant compounds; (b) from about 1% to about 10% of a nonionic surfactant compound, or mixture of nonionic surfactant compounds; (c) from about 0.5% to about 3.0% of a polyvinylpyrrolidone having a molecular weight equal to or greater than 40,000, a copolymer of N-vinylpyrrolidone and dimethylaminoethyl methacrylate having a molecular weight between about 40,000 and 1.5 million, or mixtures thereof; and (d) from about 1.0% to about 3.0% of sodium caseinate; the percentages expressed being based on the total weight of the composition.
Claim 24
Independent Claim
114 words
A method for cleaning kitchen utensils comprising treating said utensils with a composition containing: (a) from about 10% to about 30% of an anionic surfactant compound, or a mixture of anionic surfactant compounds; (b) from about 1% to about 10% of a nonionic surfactant compound, or mixture of nonionic surfactant compounds; (c) from about 0.5% to about 3.0% of a polyvinylpyrrolidone having a molecular weight equal to or greater than 40,000, a copolymer of N-vinylpyrrolidone and dimethylaminoethyl methacrylate having a molecular weight between about 40,000 and 1.5 million, or mixtures thereof; and (d) from about 1.0% to about 3.0% of sodium caseinate; the percentages expressed being based on the total weight of the composition.
Claim 25
Dependent Claim
21 words
The method of claim 22 wherein component (c) is a polyvinylpyrrolidone having a molecular weight from about 50,000 to about 500,000.
Claim 26
Dependent Claim
16 words
The method of claim 22 wherein component (c) is the copolymer of N-vinylpyrrolidone and dimethylaminoethyl methacrylate.
References Cited (Backward Citations)
US3000830A
Cited
US3254028A
Cited
US3318816A
Cited
US3393154A
Cited
US3689435A
Cited
US3749682A
Cited
NL7209130A
Cited
US3980769A
Cited
US3963649A
Cited
US3932295A
Cited
US3970594A
Cited
US3979339A
Cited
US4101456A
Cited
US4048301A
Cited
US4080310A
Cited
US4144201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-10 | 1986-07-12 | 1987-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-10 | 1990-07-12 | 1991-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-10 | 1994-07-12 | 1995-01-11 | $7700.00 | Window Closed / Lapsed |