US4032699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid resistant terpolymer compositions
Assignee: 3M Co
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Filing: 1975-09-15
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Granted: 1977-06-28
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Expires: 1995-09-15
Abstract
Abstract Thermally stable, fluoroelastomeric terpolymers of vinylidene fluoride, hexafluoropropene and chlorotrifluoroethylene in respective mol % composition of 55-70, 25-40 and 1-8 produce vulcanizates with improved fluid resistant properties and low temperature flexibility.
Inventors
- 👤 Arthur C. West, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:59
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/16; C08F; C08F214/00; C08F214/18; C08F214/22; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
39 words
A fluorinated terpolymer curable to a fluid resistant elastomer consisting essentially of 55 to 70 mol percent vinylidene fluoride, 25 to 40 mol percent hexafluoropropene and 1 to 8 mol percent chlorotrifluoroethylene to a total of 100 mol percent.
Claim 2
Dependent Claim
39 words
A fluorinated terpolymer curable to a fluid resistant elastomer consisting essentially of 55 to 70 mol percent vinylidene fluoride, 25 to 40 mol percent hexafluoropropene and 1 to 8 mol percent chlorotrifluoroethylene to a total of 100 mol percent.
Claim 3
Dependent Claim
57 words
An admixture curable in reactive association with an acid-acceptor to produce a cured elatomer, said admixture comprising: (a) 100 parts by weight fluorinated terpolymer according to claim 1, (b) 0.05 to about 1 part by weight of quaternary phosphonium compound, and (c) about 0.1 to about 5 parts by weight of at least one aromatic hydroxy compound.
Claim 4
Dependent Claim
27 words
The fluorinated terpolymer according to claim 1 consisting essentially of 55-65 mol percent vinylidene fluoride, 30-40 mol percent hexafluoropropene and 1 to 5 mol percent of chlorotrifluoroethylene.
Claim 5
Dependent Claim
16 words
A fluorinated terpolymer according to claim 1 vulcanized to a thermally stable, fluid resistant fluoroelastomeric material.
Claim 6
Dependent Claim
16 words
Manufactured shaped article consisting essentially of the thermally stable, fluid resistant fluoroelastomeric material of claim 4.
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) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |