Patent US4137044A successfully refreshed from Google Patents.
US4137044A
Expired / Lapsed
US
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Method of washing
Assignee: Ecolab Inc
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Filing: 1977-07-08
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Granted: 1979-01-30
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Expires: 1997-07-08
Abstract
Abstract A laundry method is disclosed including the step of laundering oil soiled fabric in lipophilic surfactant composition and subsequently laundering such fabric with a hydrophilic surfactant based detergent system.
Inventors
- 👤 David M. Flower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:37
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/12; D06L1/16; C; C11; C11D; C11D2111/00; C11D2111/40; C11D2111/44
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
62 words
A multi-step process for laundering oil soiled fabric, said process comprising: laundering said fabric in a first aqueous bath including a lipophilic surfactant which imparts oil-solubilizing characteristics to said first aqueous bath, separating said fabric from said first aqueous bath, laundering said fabric in a second hydrophilic aqueous bath including hydrophilic detergent and, separating said fabric from said second hydrophilic aqueous bath.
Claim 2
Dependent Claim
62 words
A multi-step process for laundering oil soiled fabric, said process comprising: laundering said fabric in a first aqueous bath including a lipophilic surfactant which imparts oil-solubilizing characteristics to said first aqueous bath, separating said fabric from said first aqueous bath, laundering said fabric in a second hydrophilic aqueous bath including hydrophilic detergent and, separating said fabric from said second hydrophilic aqueous bath.
Claim 3
Dependent Claim
47 words
The process of claim 1 wherein said lipophilic surfactant is a linear alcohol ethoxylate, said alcohol having from about 8 to about 20 carbon atoms and said ethoxylate being present in an average amount of between about 3 and about 5 moles per mole of linear alcohol.
Claim 4
Dependent Claim
19 words
The process of claim 2 wherein said linear alcohol ethoxylate has an HLB value of up to about 11.
Claim 5
Dependent Claim
14 words
The process of claim 3 wherein said HLB value is a calculated HLB value.
Claim 6
Dependent Claim
15 words
The process of claim 3 wherein said HLB value is an experimentally determined HLB value.
Claim 7
Dependent Claim
17 words
The process of claim 2 wherein said linear alcohol ethoxylate is a highly branched primary alcohol ethoxylate.
Claim 8
Dependent Claim
14 words
The process of claim 2 wherein said linear alcohol is a secondary alcohol ethoxylate.
Claim 9
Dependent Claim
21 words
The process of claim 7 wherein said secondary alcohol ethoxylate has from 10 to 16 carbon atoms in the alcohol group.
Claim 10
Dependent Claim
13 words
The process of claim 1 wherein said hydrophilic detergent comprises a non-ionic detergent.
Claim 11
Dependent Claim
42 words
The process of claim 1 wherein said lipophilic surfactant is an alkylphenol ethoxylate, said alkylphenol having about 8 to 13 carbon atoms in the alkyl radical and an average of 1.5 to 5 moles of ethylene oxide per mole of alkyl phenol.
Claim 12
Dependent Claim
14 words
The process of claim 10 wherein said alkyl phenol ethoxylate is a nonylphenol ethoxylate.
Claim 13
Dependent Claim
18 words
The process of claim 11 wherein said nonylphenol ethoxylate has an HLB value of up to about 10.5.
Claim 14
Dependent Claim
14 words
The process of claim 12 wherein said HLB value is a calculated HLB value.
Claim 15
Dependent Claim
15 words
The process of claim 12 wherein said HLB value is an experimentally determined HLB value.
Claim 16
Dependent Claim
18 words
The process of claim 1 wherein said lipophilic surfactant has an HLB value of up to about 10.5.
Claim 17
Dependent Claim
14 words
The process of claim 15 wherein said HLB value is a calculated HLB value.
Claim 18
Dependent Claim
15 words
The process of claim 15 wherein said HLB value is an experimentally determined HLB value.
Claim 19
Dependent Claim
74 words
A multi-step process for laundering oil soiled fabric, said process comprising: laundering said fabric in a first aqueous bath including a lipopholic surfactant, which lipophilic surfactant has an HLB value of up to about 10.5 and which imparts oil solubilizing characteristics to said first aqueous bath, separating said fabric from said first aqueous bath, laundering said fabric in a second non-ionic hydrophilic detergent and, separating said fabric from said second non-ionic hydrophilic aqueous bath.
Claim 20
Dependent Claim
74 words
A multi-step process for laundering oil soiled fabric, said process comprising: laundering said fabric in a first aqueous bath including a lipopholic surfactant, which lipophilic surfactant has an HLB value of up to about 10.5 and which imparts oil solubilizing characteristics to said first aqueous bath, separating said fabric from said first aqueous bath, laundering said fabric in a second non-ionic hydrophilic detergent and, separating said fabric from said second non-ionic hydrophilic aqueous bath.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |