US4080164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile scouring
Assignee: Westvaco Corp
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Filing: 1976-06-01
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Granted: 1978-03-21
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Expires: 1996-06-01
Abstract
Abstract Disclosed herein are alkaline baths for scouring textiles containing as a cleaning composition at least 0.05% of a mixture of a nonionic surfactant and a polycarboxylic acid or salt thereof of the formula <IMAGE> wherein x and y are integers from 3 to 9, x and y together equal 12, R1 and R2 are selected from the group consisting of hydrogen and COOM with at least one of R1 and R2 being COOM, and wherein M is a member of the group consisting of hydrogen, sodium, potassium, lithium and ammonium, the proportion of nonionic surfactant to polycarboxylic acid or salt thereof being between about 1:0.4 and about 1:3.
Inventors
- 👤 John R. Powers
- 👤 Frances C. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:27
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/02; C11D1/04; C11D1/08; C11D1/66; C11D1/83; C11D7/00; C11D7/02; C11D7/04; C11D7/06; D; D06; D06L; D06L1/00; D06L1/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
110 words
In a process for treating textiles to remove impurities therefrom comprising scouring with an alkaline solution, the improvement which comprises; adding to said aqueous alkaline scouring solution at least 0.05% by weight of said solution of a cleaning agent which comprises a mixture of a nonionic surfactant and a polycarboxylic acid or salt thereof having the formula ##STR4## wherein x and y are integers from 3 to 9, x and y together equal 12, and wherein M is a member of the group consisting of hydrogen, sodium, potassium, lithium and ammonium, the weight ratio of nonionic surfactant to polycarboxylic acid or salt thereof being between about 1:0.4 and about 1:3.
Claim 2
Dependent Claim
110 words
In a process for treating textiles to remove impurities therefrom comprising scouring with an alkaline solution, the improvement which comprises; adding to said aqueous alkaline scouring solution at least 0.05% by weight of said solution of a cleaning agent which comprises a mixture of a nonionic surfactant and a polycarboxylic acid or salt thereof having the formula ##STR4## wherein x and y are integers from 3 to 9, x and y together equal 12, and wherein M is a member of the group consisting of hydrogen, sodium, potassium, lithium and ammonium, the weight ratio of nonionic surfactant to polycarboxylic acid or salt thereof being between about 1:0.4 and about 1:3.
Claim 3
Dependent Claim
24 words
The process according to claim 1 wherein said aqueous alkali scouring solution is at a caustic concentration of from 1% to 14% by weight.
Claim 4
Dependent Claim
22 words
The process according to claim 2 wherein said cleaning agent is present in an amount from 0.1% to about 0.5% by weight.
Claim 5
Dependent Claim
10 words
The process according to claim 3 wherein M is sodium.
Claim 6
Dependent Claim
24 words
The process according to claim 3 wherein said nonionic surfactant is a member of the group consisting of ethoxylated alcohols and ethoxylated alkyl phenols.
Claim 7
Dependent Claim
27 words
The process according to claim 2 wherein the temperature of said aqueous alkaline scouring solution during the textile treatment is from about 140° to about 210° F.
References Cited (Backward Citations)
US3734859A
Cited
US3956161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |