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US4588796A
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Fluoroolefin polymerization process using fluoroxy compound solution as initiator
Assignee: EIDP Inc
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Filing: 1985-05-31
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Granted: 1986-05-13
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Expires: 2005-05-31
Abstract
Abstract A process for the polymerization of fluorinated olefin monomers using a fluoroxy compound solution as initiator, wherein said solution has a fluoroxy compound concentration of at least 0.5 meq/liter. The concentration contains, based on the total number of fluoroxy compounds present, about 35 to 100% of an acyl hypofluorite of the formula RCOOF wherein R is X(CF 2 ) n -- or CF 3 CF 2 CF 2 O[CF(CF 3 )CF 2 O] m CF(CF 3 )-- wherein n is 1 to 16, m is 0 to 50, and X is H or F.
Inventors
- 👤 Robert C. Wheland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:52
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/18; C08F214/26; C08F14/00; C08F14/18; C08F14/26
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
116 words
A process for polymerizing one or more olefin monomers, at least one of which is fluorinated, comprising contacting said monomers with a fluoroxy compound solution of at least one fluoroxy compound, said solution containing an acyl hypofluorite compound of the formula RCOOF and having a fluoroxy compound concentration of at least 0.5 meq/liter; said concentration containing, based on the total number of equivalents of fluoroxy compounds present, about 35 to 100% of RCOOF; other fluoroxy compounds in said solution having the formulae RCF 2 OF and RCF(OF) 2 ; wherein for each occurrence R is CF 3 CF 2 CF 2 O[CF(CF 3 )CF 2 O] m CF(CF 3 )-- and m is 0 to 50.
Claim 2
Dependent Claim
116 words
A process for polymerizing one or more olefin monomers, at least one of which is fluorinated, comprising contacting said monomers with a fluoroxy compound solution of at least one fluoroxy compound, said solution containing an acyl hypofluorite compound of the formula RCOOF and having a fluoroxy compound concentration of at least 0.5 meq/liter; said concentration containing, based on the total number of equivalents of fluoroxy compounds present, about 35 to 100% of RCOOF; other fluoroxy compounds in said solution having the formulae RCF 2 OF and RCF(OF) 2 ; wherein for each occurrence R is CF 3 CF 2 CF 2 O[CF(CF 3 )CF 2 O] m CF(CF 3 )-- and m is 0 to 50.
Claim 3
Dependent Claim
14 words
A process according to claim 1 wherein the concentration is at least 2 meq/liter.
Claim 4
Dependent Claim
17 words
A process according to claim 2 wherein the concentration is at least 2 to about 60 meq/liter.
Claim 5
Dependent Claim
17 words
A process according to claim 3 wherein the concentration is at least 2 to about 50 meq/liter.
Claim 6
Dependent Claim
21 words
A process according to claim 4 wherein the contacting is carried out at a temperature of about 0° to 100° C.
Claim 7
Dependent Claim
22 words
A process according to claim 5 wherein the contacting is carried out at a pressure of about 101 kPa to 10.3 MPa.
Claim 8
Dependent Claim
46 words
A process according to claim 6 wherein the one or more monomers have the formula CW 2 ═CYZ, wherein W, independently, is H or F; Y is H, F or Cl; and Z is H, F, Cl, R or OR where R is C 1-4 perfluoroalkyl.
Claim 9
Dependent Claim
11 words
A process according to claim 7 wherein the monomer is tetrafluoroethylene.
Claim 10
Dependent Claim
21 words
A process according to claim 7 wherein the monomers are monomer combinations selected from tetrafluoroethylene/hexafluoroethylene, tetrafluoroethylene/ethylene, tetrafluoroethylene/perfluoro(methylvinyl) ether, and tetrafluoroethylene/perfluoro(propylvinyl) ether.
Claim 11
Dependent Claim
21 words
A process according to claim 6 wherein the contacting of the monomer(s) with the solution occurs in the presence of water.
Claim 12
Dependent Claim
25 words
A process according to claim 6 wherein the contacting of the monomer(s) with the solution occurs in the presence if an inert, liquid fluorocarbon medium.
Claim 13
Dependent Claim
25 words
A process according to claim 11 wherein the inert, liquid fluorocarbon medium is selected from the group consisting of perfluorinated hydrocarbons, perfluorocyclic ethers, and halofluorocarbons.
Claim 14
Dependent Claim
18 words
A process according to claim 6 wherein the fluoroxy compound concentration contains about 70 to 100% acyl hypofluorite.
Claim 15
Dependent Claim
12 words
A process according to claim 13 wherein m is 6 to 23.
Claim 16
Dependent Claim
46 words
A process according to claim 6 wherein the monomer is tetrafluoroethylene; the contacting of the monomer with the solution occurs in the presence of an inert, liquid fluorocarbon medium; the fluoroxy compound concentration contains about 70 to 100% acyl hypofluorite; and m is 6 to 23.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1989-05-12 | 1989-11-11 | 1990-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-12 | 1993-11-11 | 1994-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-12 | 1997-11-11 | 1998-05-13 | $7700.00 | Window Closed / Lapsed |