US4746456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergents containing graft copolymers of polyalkylene oxides and vinyl acetate as antiredeposition inhibitors
Assignee: BASF SE
•
Filing: 1986-10-02
•
Granted: 1988-05-24
•
Expires: 2006-10-02
Abstract
Abstract Detergents contain added graft copolymers which have an antiredeposition action and are obtainable by grafting polyalkylene oxides having a number average molecular weight of from 2000 to 100,000 with vinyl acetate in a weight ratio of from 1:0.2 to 1:10, and up to 15% of whose acetate groups may be hydrolyzed.
Inventors
- 👤 Alexander Kud
- 👤 Guenther Schulz
- 👤 Wolfgang Trieselt
- 👤 Heinrich Hartmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:20
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3788; C11D3/0005; C11D3/0036
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
71 words
A detergent comprising surfactants, builders, bleaches and conventional additives, which contains, as an added soil antiredeposition agent, from 0.1 to 3% by weight of a graft copolymer which is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 2000 to 100,000 and based on ethylene oxide, propylene oxide and/or butylene oxide with (b) vinyl acetate in a weight ratio (a):(b) of from 1:0.2 to 1:10.
Claim 2
Dependent Claim
71 words
A detergent comprising surfactants, builders, bleaches and conventional additives, which contains, as an added soil antiredeposition agent, from 0.1 to 3% by weight of a graft copolymer which is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 2000 to 100,000 and based on ethylene oxide, propylene oxide and/or butylene oxide with (b) vinyl acetate in a weight ratio (a):(b) of from 1:0.2 to 1:10.
Claim 3
Dependent Claim
48 words
A detergent as claimed in claim 1, wherein the graft copolymer added as an antiredeposition agent is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 4000 to 50,000 with (b) vinyl acetate in a weight ratio of from 1:0.5 to 1:6.
Claim 4
Dependent Claim
42 words
A detergent as claimed in claim 1, wherein the graft copolymer added as an antiredeposition agent has a K value of from 10 to 200 (determined according to H. Fikentscher in 1% strength by weight solution in ethyl acetate at 25° C.).
Claim 5
Dependent Claim
73 words
A detergent as claimed in claim 1, wherein the graft copolymer added as an antiredeposition agent is obtainable by grafting (a) a polyethylene oxide having a number average molecular weight of from 2000 to 50,000 with (b) vinyl acetate in a weight ratio of from 1:0.5 to 1:6 and has a K value of from 10 to 200, determined according to H. Fikentscher in 1% strength solution in ethyl acetate at 25° C.
Claim 6
Dependent Claim
21 words
A detergent as claimed in claim 1, wherein up to 15% of the acetate groups of the graft copolymer are hydrolyzed.
Claim 7
Dependent Claim
63 words
A detergent comprising as an added soil antiredeposition agent, from 0.1 to 3% by weight of a graft copolymer which is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 2000 to 100,000 and based on ethylene oxide, propylene oxide and/or butylene oxide with (b) vinyl acetate in a weight ratio (a):(b) of from 1:0.2 to 1:10.
Claim 8
Dependent Claim
63 words
A detergent comprising as an added soil antiredeposition agent, from 0.1 to 3% by weight of a graft copolymer which is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 2000 to 100,000 and based on ethylene oxide, propylene oxide and/or butylene oxide with (b) vinyl acetate in a weight ratio (a):(b) of from 1:0.2 to 1:10.
Claim 9
Dependent Claim
48 words
A detergent as claimed in claim 6, wherein the graft copolymer added as an antiredeposition agent is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 4000 to 50,000 with (b) vinyl acetate in a weight ratio of from 1:0.5 to 1:6.
Claim 10
Dependent Claim
42 words
A detergent as claimed in claim 6, wherein the graft copolymer added as an antiredeposition agent has a K value of from 10 to 200 (determined according to H. Fikentscher in 1% strength by weight solution in ethyl acetate at 25° C.).
Claim 11
Dependent Claim
73 words
A detergent as claimed in claim 6, wherein the graft copolymer added as an antiredeposition agent is obtainable by grafting (a) a polyethylene oxide having a number average molecular weight of from 2000 to 50,000 with (b) vinyl acetate in a weight ratio of from 1:0.5 to 1:6 and has a K value of from 10 to 200, determined according to H. Fikentscher in 1% strength solution in ethyl acetate at 25° C.
Claim 12
Dependent Claim
21 words
A detergent as claimed in claim 6, wherein up to 15% of the acetate groups of the graft copolymer are hydrolyzed.
Claim 13
Dependent Claim
78 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 which is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 2,000 to 100,000 and based on ethylene oxide, propylene oxide and/or butylene oxide with (b) vinyl acetate in a weight ratio (a):(b) of from 1:0.2 to 1:10.
Claim 14
Dependent Claim
78 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 which is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 2,000 to 100,000 and based on ethylene oxide, propylene oxide and/or butylene oxide with (b) vinyl acetate in a weight ratio (a):(b) of from 1:0.2 to 1:10.
Claim 15
Dependent Claim
48 words
A process as claimed in claim 11, wherein the graft copolymer used as an antiredeposition agent is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 4000 to 50,000 with (b) vinyl acetate in a weight ratio of from 1:0.5 to 1:6.
Claim 16
Dependent Claim
42 words
A process as claimed in claim 11, wherein the graft copolymer used as an antiredeposition agent has a K value of from 10 to 200 (determined according to H. Fikentscher in 1% strength by weight solution in ethyl acetate at 25° C.)
Claim 17
Dependent Claim
73 words
A process as claimed in claim 11, wherein the graft copolymer used as an antiredeposition agent is obtainable by grafting (a) a polyethylene oxide having a number average molecular weight of from 2000 to 50,000 with (b) vinyl acetate in a weight ratio of from 1:0.5 to 1:6 and has a K value of from 10 to 200, determined according to H. Fikentscher in 1% strength solution in ethyl acetate at 25° C.
Claim 18
Dependent Claim
21 words
A process as claimed in claim 11, wherein up to 15% of the acetate groups of the graft copolymer are hydrolyzed.
References Cited (Backward Citations)
US2755252A
Cited
DE1077430B
Cited
GB922457A
Cited
US3284364A
Cited
US4088610A
Cited
JPS49119902A
Cited
US4068035A
Cited
US4444561A
Cited
US4490271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-24 | 1991-11-23 | 1992-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-24 | 1995-11-23 | 1996-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-24 | 1999-11-23 | 2000-05-24 | $7700.00 | Window Closed / Lapsed |