US4085137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly(perfluoroalkylene oxide) derivatives
Assignee: 3M Co
•
Filing: 1975-08-28
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Granted: 1978-04-18
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Expires: 1995-08-28
Abstract
Abstract Polyfunctional poly(perfluoroalkylene oxide) compounds, such as compounds of the formula A--CF.sub.2 O(CF.sub.2 CF.sub.2 O).sub.m (CF.sub.2 O).sub.n CF.sub.2 --A' where A and A' are reactive radicals containing a polymerizable functional group, e.g., hydroxyl, are provided, such compounds being useful as monomers in the preparation of polymeric materials, e.g., polyurethanes, possessing unusual low temperature stability and resistance to solvents.
Inventors
- 👤 Ronald A. Mitsch
- 👤 Joseph La Mar Zollinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:32
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/52; C07D263/62; C07C; C07C265/00; C07C309/00; C07C309/63; C07C309/64; C07C309/65; C07D271/00; C07D271/02; C07D271/10; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5003; C08G18/5015; C08G18/70; C08G18/72; C08G18/77; C08G18/771; C08G18/773; C08G65/00; C08G65/002; C08G65/005; C08G65/007; C08G65/02; C08G65/32; C08G65/329; C08G65/333; C08G65/336; C08G69/00; C08G69/42; C08G77/00; C08G77/42; C08G77/46; C10; C10M; C10M3/00; C10M2211/00; C10M2211/02; C10M2213/00; C10M2213/04; C10M2213/06; C10M2215/00; C10M2215/08; C10M2215/082; C10M2215/14; C10M2215/16; C10M2215/22; C10M2215/221; C10M2215/222; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/02; C10M2217/04; C10M2221/00; C10M2221/04; C10M2227/00; C10M2227/02; C10M2227/04; C10N; C10N2040/00; C10N2040/08; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/175; C10N2040/18; C10N2040/185; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
121 words
Linear hydroxy-terminated poly(perfluoroalkylene oxide) compounds having a number average molecular weight of 500 to 10,000 and the general formula R--FC.sub.2 O--(CF.sub.2 CF.sub.2 O).sub.m (CF.sub.2 O).sub.n CF.sub.2 --R' where R and R' are --C(O)N(R")CH 2 CH 2 OH where R" is hydrogen, lower alkyl of 1 to 8 carbon atoms, or ethylol, where m and n designate randomly distributed perfluoroethyleneoxy and perfluoromethyleneoxy backbone subunits, respectively, the ratio m/n being 0.2/1 to 5/1, said compounds having a glass transition temperature lower than -78° C and polymerizable to polyurethanes having recurrent backbone units of the formula --CF 2 O--(CF 2 CF 2 O) m (CF 2 O) n --CF 2 -- which impart to the polyurethanes a glass transition temperature lower than -78° C.
Claim 2
Dependent Claim
121 words
Linear hydroxy-terminated poly(perfluoroalkylene oxide) compounds having a number average molecular weight of 500 to 10,000 and the general formula R--FC.sub.2 O--(CF.sub.2 CF.sub.2 O).sub.m (CF.sub.2 O).sub.n CF.sub.2 --R' where R and R' are --C(O)N(R")CH 2 CH 2 OH where R" is hydrogen, lower alkyl of 1 to 8 carbon atoms, or ethylol, where m and n designate randomly distributed perfluoroethyleneoxy and perfluoromethyleneoxy backbone subunits, respectively, the ratio m/n being 0.2/1 to 5/1, said compounds having a glass transition temperature lower than -78° C and polymerizable to polyurethanes having recurrent backbone units of the formula --CF 2 O--(CF 2 CF 2 O) m (CF 2 O) n --CF 2 -- which impart to the polyurethanes a glass transition temperature lower than -78° C.
Claim 3
Dependent Claim
16 words
The poly(perfluoroalkylene oxides) of claim 1 where R and R' are --C(O)N(H)CH 2 CH 2 OH.
Claim 4
Dependent Claim
18 words
The poly(perfluoroalkylene oxides) of claim 1 where R and R' are --C(O)N(CH 3 )CH 2 CH 2 OH.
Claim 5
Dependent Claim
18 words
The poly(perfluoroalkylene oxides) of claim 1 where R and R' are --C(O)N(CH 2 CH 2 OH) 2 .
References Cited (Backward Citations)
US3697564A
Cited
US3847978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-17 | 1981-10-17 | 1982-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-17 | 1985-10-17 | 1986-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-17 | 1989-10-17 | 1990-04-18 | $7700.00 | Window Closed / Lapsed |