US3628997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for treating fibrous materials and articles produced thereby
Assignee: Colgate Palmolive Co
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Filing: 1967-10-30
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Granted: 1971-12-21
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Expires: 1987-10-30
Abstract
Abstract This invention relates to a method and means for achieving a degree of oil and/or water repellency by fibrous materials by exhausting on such materials as textiles and the like acidic nonionic emulsion system containing fluorocarbon polymer, then achieving the desired oil and/or water repellency with subsequent heat curing.
Inventors
- 👤 Vincent Theodore Elkind
- 👤 Robert Tweedy Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:29
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
13 words
The method of claim 1 wherein the pH is between 4.5 to 5.5.
Claim 2
Dependent Claim
30 words
The method of claim 1 wherein the substrate is subjected to a heating step after application whereby the fluorocarbon polymer is cured to give increased oil and water repellency characteristics.
Claim 3
Dependent Claim
26 words
The method of claim 1 wherein the quantity of fluorocarbon polymer in the aqueous medium is In the range of 0.25 to 10 percent by weight.
Claim 4
Dependent Claim
12 words
The method of claim 1 wherein the nonionic material is a surfactant.
Claim 5
Dependent Claim
10 words
The method of claim 5 wherein the surfactant is nonylphenoxyethyleneoxyethanol.
Claim 6
Dependent Claim
13 words
The method of claim 6 wherein the fluorocarbon polymer is a trihydroperfluoroheptyl polymer.
Claim 7
Dependent Claim
13 words
The method of claim 7 wherein the acidification is achieved with acetic acid.
References Cited (Backward Citations)
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US2826564A
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US2718478A
Cited
US2953526A
Cited
US2841573A
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US2803615A
Cited
US2839513A
Cited
US3178309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |