Patent US3706594A successfully refreshed from Google Patents.
US3706594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous substrate treated with copolymers of fluoroalkyl ethers and maleic anhydride
Assignee: United States Department of Agriculture
•
Filing: 1971-02-22
•
Granted: 1972-12-19
•
Expires: 1991-02-22
Abstract
Abstract Fluoroalkyl allyl (or methallyl) ethers are copolymerized with maleic anhydride. The copolymer products are useful for many purposes, including application to fibrous materials to provide both soil repellency and soil releasability.
Inventors
- 👤 William L Wasley
- 👤 Allen G Pittman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:28
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/347; D06M15/353; C; C08; C08F; C08F16/00; C08F16/12; C08F16/14; C08F16/28; C08F222/00; C08F222/04; C08F222/06; C08F8/00; D06M15/263; D06M15/267; D06M15/285; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31891; Y10T428/31895; Y10T428/31909; Y10T442/00; Y10T442/20; Y10T442/2279; Y10T442/2287
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
9 words
The process of claim 1 wherein R is H.
Claim 2
Dependent Claim
9 words
The process of claim 1 wherein R is CH3.
Claim 3
Dependent Claim
8 words
The process of claim 1 wherein Rf is
Claim 4
Dependent Claim
9 words
The process of claim 1 wherein Rf is CF3-(CF2)6-CH2-
Claim 5
Dependent Claim
25 words
A process for modifying a fibrous substrate, which comprises I. depositing on the fibrous substrate a copolymer which contains a. recurring units of the structure
Claim 6
Dependent Claim
12 words
The process of claim 6 wherein X and Y are each -COOH.
Claim 7
Dependent Claim
12 words
The process of claim 6 wherein X and Y are each -COONa.
Claim 8
Dependent Claim
12 words
The process of claim 6 wherein X is -COOH and Y is
Claim 9
Dependent Claim
12 words
The process of claim 6 wherein X is -COOH and Y is
Claim 10
Dependent Claim
22 words
As an article of manufacture, fibrous material carrying a deposit of an addition copolymer which contains a. recurring units of the structure
Claim 11
Dependent Claim
9 words
The article of claim 11 wherein R is H.
Claim 12
Dependent Claim
9 words
The article of claim 11 wherein R is CH3.
Claim 13
Dependent Claim
8 words
The article of claim 11 wherein Rf is
Claim 14
Dependent Claim
9 words
The article of claim 11 wherein Rf is CF3-(CF2)6-CH2-
Claim 15
Dependent Claim
22 words
As an article of manufacture, fibrous material carryIng a deposit of an addition copolymer which contains a. recurring units of the structure
Claim 16
Dependent Claim
12 words
The article of claim 16 wherein X and Y are each -COOH.
Claim 17
Dependent Claim
12 words
The article of claim 16 wherein X and Y are each -COONa.
Claim 18
Dependent Claim
12 words
The article of claim 16 wherein X is -COOH and Y is
Claim 19
Dependent Claim
12 words
The article of claim 16 wherein X is -COOH and Y is
References Cited (Backward Citations)
US3384628A
Cited
US3479214A
Cited
US3361685A
Cited
US3382222A
Cited
US3437692A
Cited
US3522084A
Cited
US3541159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |