US3754860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wrinkle resistance finishes for cotton fabric using citric acid derivatives for soil release
Assignee: United States Department of Agriculture
•
Filing: 1971-11-05
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Granted: 1973-08-28
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Expires: 1991-11-05
Abstract
Abstract A process for producing wrinkle-resistant cotton fabric that does not increase the difficulty of laundering; said process comprises the addition of citric acid or monoesters of citric acid to the usual finishing formulations containing a crosslinking agent for cellulose with or without a softening agent.
Inventors
- 👤 J Frick
- 👤 G Gautreaux
- 👤 W Reeves
- 👤 A Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:16
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
14 words
The process of claim 1 wherein the monester of citric acid is monobutyl citrate.
Claim 2
Dependent Claim
14 words
The process of clAim 1 wherein the monoester of citric acid is 2-ethylhexyl citrate.
Claim 3
Dependent Claim
67 words
A process for producing wrinkle-resistant cotton fabric without reducing the ease of soil removal which process comprises: a. adding to a conventional crosslinking bath about 0.1 to 5.0 weight percent of a monoester of citric acid selected from the group consisting of monobutyl citrate and 2-ethylhexyl citrate, b. impregnating a cotton fabric in the crosslinking bath from (a), c. drying and curing the impregnated fabric from (b).
Claim 4
Dependent Claim
14 words
The process of claim 4 wherein the monoester of citric acid is monobutyl citrate.
Claim 5
Dependent Claim
14 words
The process of claim 4 wherein the monoester of citric acid is 2-ethylhexyl citrate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |