Patent US4564463A successfully refreshed from Google Patents.
US4564463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid laundry detergents with improved soil release properties
Assignee: Lever Brothers Co
•
Filing: 1984-06-15
•
Granted: 1986-01-14
•
Expires: 2004-06-15
Abstract
Abstract A heavy duty liquid detergent composition and a method for imparting soil release benefits to a fabric is herein provided. The composition comprises: (a) from about 2 to 10% of a nonionic surfactant selected from the group consisting of a C 12 -C 13 fatty alcohol ethoxylated with an average of 6.5 moles ethylene oxide, a C 9 -C 11 fatty alcohol ethoxylated with an average of 6 moles ethylene oxide, and mixtures thereof; (b) from about 10 to 25% of an anionic surfactant; and (c) from about 0.1 to 0.8% of methylcellulose. Small amounts of sodium citrate or sodium nitrilotriacetic acid may be present to aid in general detergency.
Inventors
- 👤 Isaac I. Secemski
- 👤 Lynn H. Lander
- 👤 Henricus M. Princen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:20
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/83; C11D3/00; C11D3/0005; C11D3/0036; C11D3/16; C11D3/20; C11D3/22; C11D3/222; C11D3/225
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
82 words
A heavy duty liquid detergent composition with improved soil release properties comprising: (a) from about 2 to 10% of a nonionic surfactant selected from the group consisting of a C 12 -C 13 fatty alcohol ethoxylated with an average of 6.5 moles ethylene oxide, a C 9 -C 11 fatty alcohol ethoxylated with an average of 6 moles ethylene oxide, and mixtures thereof; (b) from about 10 to 25% of an anionic surfactant; and (c) from about 0.1 to 0.8% of methylcellulose.
Claim 2
Dependent Claim
82 words
A heavy duty liquid detergent composition with improved soil release properties comprising: (a) from about 2 to 10% of a nonionic surfactant selected from the group consisting of a C 12 -C 13 fatty alcohol ethoxylated with an average of 6.5 moles ethylene oxide, a C 9 -C 11 fatty alcohol ethoxylated with an average of 6 moles ethylene oxide, and mixtures thereof; (b) from about 10 to 25% of an anionic surfactant; and (c) from about 0.1 to 0.8% of methylcellulose.
Claim 3
Dependent Claim
20 words
A composition according to claim 1 further comprising from about 2 to 10% of sodium citrate or sodium nitrilotriacetic acid.
Claim 4
Dependent Claim
17 words
A composition according to claim 1 wherein the nonionic surfactant is present from about 6 to 7%.
Claim 5
Dependent Claim
46 words
A composition according to claim 1 wherein the anionic surfactant is the salt of a linear alkylbenzene sulfonate whose alkyl radical has from 8 to 22 carbon atoms and having a cation selected from the group consisting of alkali metal; ammonium; mono-, di- and tri-ethanolammonium ions.
Claim 6
Dependent Claim
16 words
A composition according to claim 1 wherein the methylcellulose is present from about 0.3 to 0.5%.
Claim 7
Dependent Claim
27 words
A composition according to claim 1 wherein the methylcellulose has a methoxyl degree of substitution ranging from 1.64 to 1.92 and methoxyl content of 27.5 to 31.5%.
Claim 8
Dependent Claim
32 words
A composition according to claim 1 further comprising a hydrotrope selected from the group consisting of alkali metal or ammonium salts of xylene-, toluene-, ethyl benzene- and isopropyl benzene-sulfonates and mixtures thereof.
Claim 9
Dependent Claim
20 words
A composition according to claim 1 further comprising from about 0.01 to 1.0% of C 12 -C 20 fatty acid.
Claim 10
Independent Claim
90 words
A method for imparting soil release benefits to a fabric comprising washing the fabric with a liquid detergent composition comprising: (a) from about 2 to 10% of a nonionic surfactant selected from the group consisting of a C 12 -C 13 fatty alcohol ethoxylated with an average of 6.5 moles ethylene oxide, a C 9 -C 11 fatty alcohol ethoxylated with an average of 6 moles ethylene oxide, and mixtures thereof; (b) from about 10 to 25% of an anionic surfactant; and (c) from about 0.1 to 0.8% of methylcellulose.
Claim 11
Independent Claim
90 words
A method for imparting soil release benefits to a fabric comprising washing the fabric with a liquid detergent composition comprising: (a) from about 2 to 10% of a nonionic surfactant selected from the group consisting of a C 12 -C 13 fatty alcohol ethoxylated with an average of 6.5 moles ethylene oxide, a C 9 -C 11 fatty alcohol ethoxylated with an average of 6 moles ethylene oxide, and mixtures thereof; (b) from about 10 to 25% of an anionic surfactant; and (c) from about 0.1 to 0.8% of methylcellulose.
Claim 12
Dependent Claim
24 words
A method according to claim 9 wherein the detergent composition further comprises from about 2 to 10% of sodium citrate and sodium nitrilotriacetate acid.
References Cited (Backward Citations)
GB1084061A
Cited
US4368147A
Cited
US4000093A
Cited
US4174305A
Cited
US4048433A
Cited
US4129515A
Cited
US4333862A
Cited
US4347168A
Cited
US4390466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-13 | 1989-07-15 | 1990-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-13 | 1993-07-15 | 1994-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-13 | 1997-07-15 | 1998-01-14 | $7700.00 | Window Closed / Lapsed |