US4846994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of graft polymers based on polyalkylene oxides as grayness inhibitors in the wash and aftertreatment of textile material containing synthetic fibers
Assignee: BASF SE
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Filing: 1988-03-31
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Granted: 1989-07-11
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Expires: 2008-03-31
Abstract
Abstract A detergent containing as grayness inhibitor in the wash and aftertreatment of textile material containing synthetic fibers graft polymers obtainable by grafting (a) polyalkylene oxides which have a number average molecular weight of from 300 to 100,000 and are based on ethylene oxide, propylene oxide and/or butylene oxide, with (b) at least one vinyl ester derived from a saturated monocarboxylic acid containing 3 to 6 carbon atoms, a methyl or ethyl ester of (meth)acrylic acid and optionally mixtures of at least one of the monomers mentioned and up to 95% by weight of vinyl acetate in a weight ratio (a):(b) of from 1:02 to 1:10.
Inventors
- 👤 Alexander Kud
- 👤 Wolfgang Trieselt
- 👤 Heinrich Hartmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:39
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3788; C08; C08F; C08F283/00; C08F283/10; C11D3/0005; C11D3/0036
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
122 words
A detergent comprising surfactants, builders and, if desired, conventional additives, which contains, as an added soil antiredeposition agent, from 0.1 to 5% by weight of a graft polymer which is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 300 to 100,000 and based on ethylene oxide, propylene oxide and/or butylene oxide, with (b) at least one ester selected from the group consisting of a vinyl ester derived from a saturated carboxylic acid having 3 to 6 carbon atoms, methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate and mixtures of at least one of the said monomers with up to 95% by weight of vinyl acetate in a weight ratio (a):(b) of from 1:0.2 to 1:10.
Claim 2
Dependent Claim
122 words
A detergent comprising surfactants, builders and, if desired, conventional additives, which contains, as an added soil antiredeposition agent, from 0.1 to 5% by weight of a graft polymer which is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 300 to 100,000 and based on ethylene oxide, propylene oxide and/or butylene oxide, with (b) at least one ester selected from the group consisting of a vinyl ester derived from a saturated carboxylic acid having 3 to 6 carbon atoms, methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate and mixtures of at least one of the said monomers with up to 95% by weight of vinyl acetate in a weight ratio (a):(b) of from 1:0.2 to 1:10.
Claim 3
Dependent Claim
87 words
A detergent as claimed in claim 1, wherein the graft polymer added as a soil antiredeposition agent is obtainable by grafting (a) polyalkylene oxide having a number average molecular weight of from 1,000 to 50,000, a polymerized ethylene oxide content of from 40 to 100 mole % with (b) at least one ester selected from the group consisting of vinyl propionate, methyl acrylate and mixtures of vinyl propionate with up to 95% by weight of vinyl acetate in a weight ratio (a):(b) of from 1:0.5 to 1:6.
Claim 4
Dependent Claim
42 words
A detergent as claimed in claim 1, wherein the graft polymer added as a soil antiredeposition agent has a K value of from 5 to 200, determined according to H. Fikentscher in 2% strength by weight solution in dimethylformamide at 25° C.
Claim 5
Dependent Claim
75 words
A detergent as claimed in claim 1, wherein the graft polymer added as a soil antiredeposition agent is obtainable by grafting (a) polyethylene oxide having a number average molecular weight of from 1,000 to 50,000 with (b) vinyl propionate in a weight ratio (a):(b) of from 1:0.5 to 1:6 and has a K value of from 5 to 200, determined according to H. Fikentscher in 2% strength by weight solution in dimethylformamide at 25° C.
Claim 6
Dependent Claim
21 words
A detergent as claimed in claim 1, wherein up to 15% of the ester groups of the graft polymer are hydrolyzed.
Claim 7
Dependent Claim
139 words
A detergent comprising as an added soil antiredeposition agent, from 0.1 to 5% by weight of a graft polymer having a K value of from 5 to 200 (determined according to H. Fikentscher in 2% strenght by weight solution in dimethylformamide at 25° C.) and which is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 300 to 100,000 and based on ethylene oxide, propylene oxide and/or butylene oxide, with (b) at least one ester selected from the group consisting of a vinyl ester derived from a saturated carboxylic acid having 3 to 6 carbon atoms, methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate and mixtures of at least one of the said monomers with up to 95% by weight of vinyl acetate in a weight ratio (a):(b) of from 1:0.2 to 1:10.
Claim 8
Dependent Claim
139 words
A detergent comprising as an added soil antiredeposition agent, from 0.1 to 5% by weight of a graft polymer having a K value of from 5 to 200 (determined according to H. Fikentscher in 2% strenght by weight solution in dimethylformamide at 25° C.) and which is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 300 to 100,000 and based on ethylene oxide, propylene oxide and/or butylene oxide, with (b) at least one ester selected from the group consisting of a vinyl ester derived from a saturated carboxylic acid having 3 to 6 carbon atoms, methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate and mixtures of at least one of the said monomers with up to 95% by weight of vinyl acetate in a weight ratio (a):(b) of from 1:0.2 to 1:10.
Claim 9
Dependent Claim
154 words
A process for soil antiredeposition during washing with detergents having a reduced phosphate content of less than 25% by weight of sodium triphosphate, which comprises using as a soil antiredeposition agent a graft copolymer having a K value of from 5 to 200 (determined according to H. Fikkentscher in 2% strength by weight solution in dimethylformamide at 25° C.) and which is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 300 to 100,000 and based on ethylene oxide, propylene oxide and/or butylene oxide with (b) at least one ester selected from the group consisting of a vinyl ester derived from a saturated carboxylic acid having 3 to 6 carbon atoms, methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate and mixtures of at least one of the said monomers with up to 95% by weight of vinyl acetate in a weight ratio (a):(b) of from 1:0.2 to 1:10.
Claim 10
Dependent Claim
154 words
A process for soil antiredeposition during washing with detergents having a reduced phosphate content of less than 25% by weight of sodium triphosphate, which comprises using as a soil antiredeposition agent a graft copolymer having a K value of from 5 to 200 (determined according to H. Fikkentscher in 2% strength by weight solution in dimethylformamide at 25° C.) and which is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 300 to 100,000 and based on ethylene oxide, propylene oxide and/or butylene oxide with (b) at least one ester selected from the group consisting of a vinyl ester derived from a saturated carboxylic acid having 3 to 6 carbon atoms, methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate and mixtures of at least one of the said monomers with up to 95% by weight of vinyl acetate in a weight ratio (a):(b) of from 1:0.2 to 1:10.
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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) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |