US4132681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorinated polyether network polymers
Assignee: United States Department of the Navy
•
Filing: 1976-10-29
•
Granted: 1979-01-02
•
Expires: 1996-10-29
Abstract
Abstract A random fluorinated polymer of the general formula: ##STR1## wherein x is an integer from 1 to 4, y is an integer from 1 to 4, z is 1 more, R' is selected from the group consisting of the 1,3 and the 1,4 isomers of --OC(CF 3 ) 2 φC(CF 3 ) 2 O--, R" is selected from the group consisting of the cis and trans isomers of --O(CF 3 ) 2 CCH 2 CH═CHC(CF 3 ) 2 O--, and R is either R' or R"; and epoxy resins and urethane resins prepared therefrom.
Inventors
- 👤 Donald E. Field
- 👤 James R. Griffith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:48
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5003; C08G18/5015; C08G18/58; C08G18/582; C08G59/02; C08G59/04; C08G59/20; C08G59/22; C08G59/30; C09; C09D; C09D163/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
86 words
A polymer of the general formula: ##STR5## wherein x is an integer from 1 to 4, y is an integer from 1 to 4, z is 1 or more, R' is selected from the group consisting of the 1,3 and the 1,4 isomers of --OC(CF 3 ) 2 φC(CF 3 ) 2 O--, R" is selected from the group consisting of the cis and trans isomers of --O(CF 3 ) 2 CCH 2 CH═CH 1 C(CF 3 ) 2 O--and R is either R' or R".
Claim 2
Dependent Claim
86 words
A polymer of the general formula: ##STR5## wherein x is an integer from 1 to 4, y is an integer from 1 to 4, z is 1 or more, R' is selected from the group consisting of the 1,3 and the 1,4 isomers of --OC(CF 3 ) 2 φC(CF 3 ) 2 O--, R" is selected from the group consisting of the cis and trans isomers of --O(CF 3 ) 2 CCH 2 CH═CH 1 C(CF 3 ) 2 O--and R is either R' or R".
Claim 3
Dependent Claim
12 words
The polymer of claim 1 wherein z is from 1 to 10.
Claim 4
Dependent Claim
12 words
The polymer of claim 1 wherein z is from greater than 10.
Claim 5
Dependent Claim
14 words
A thermoset resin obtained by curing a composition comprising the polymer of claim 2.
Claim 6
Dependent Claim
39 words
A thermoset resin coating obtained by curing a mixture comprising the epoxy resin of claim 4 and a fluorinated polymer selected from the class consisting of poly-(tetrafluoroethylene) and poly-(fluoroethylenepropylene) in an amount up to 55 percent of said coating.
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) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |