Nonaqueous polymerization of fluoromonomers

Details Nonaqueous polymerization of fluoromonomers Nonaqueous polymerization of fluoromonomers

1997-05-08

1999-08-17

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526255, 526942, C08F 200

Patent

active

059395028

ABSTRACT:
The present invention provides a process for making fluorinated polymers and copolymers having stable end groups. The process includes (1) contacting a fluoromonomer, an initiator capable of producing stable end groups on the polymer chain, and a polymerization medium comprising carbon dioxide, and (2) polymerizing the fluoromonomer. The polymerization medium preferably comprises liquid or supercritical carbon dioxide. Advantageously, the process may also include the step of separating the fluoropolymer from the polymerization medium. The present invention also provides polymerization reaction mixtures useful in the processes of the present invention.

REFERENCES:
patent: 3085083 (1963-04-01), Schreyer
patent: 3522228 (1970-07-01), Fukui et al.
patent: 3642742 (1972-02-01), Carlson
patent: 3674758 (1972-07-01), Carlson
patent: 4743658 (1988-05-01), Imbalzano et al.
patent: 4748220 (1988-05-01), Hartmann et al.
patent: 4861845 (1989-08-01), Slocum et al.
patent: 5021516 (1991-06-01), Wheland
patent: 5182342 (1993-01-01), Feiring et al.
patent: 5275751 (1994-01-01), Decaire et al.
patent: 5286822 (1994-02-01), Krespan et al.
patent: 5310836 (1994-05-01), Treat
patent: 5310870 (1994-05-01), Peavy
patent: 5312882 (1994-05-01), DeSimone et al.
patent: 5328972 (1994-07-01), Dada et al.
patent: 5340490 (1994-08-01), Decaire et al.
patent: 5345013 (1994-09-01), Van Bramer et al.
patent: 5382623 (1995-01-01), DeSimone et al.
patent: 5451633 (1995-09-01), DeSimone et al.
patent: 5478905 (1995-12-01), Anolick et al.
patent: 5506317 (1996-04-01), DeSimone et al.
patent: 5530049 (1996-06-01), Dee et al.
patent: 5674957 (1997-10-01), Deimone et al.
T. Suwa et al; Melting and Crystallization Behavior of Poly (tetrafluoroethylene). New Method for Molecular Weight Measurements of Poly(tetrafluoroethylene) Using a Differential Scanning Calorimeter; Journal of Applied Polymer Science 17, pp. 3253-3257 (1973).
J.M. DeSimone et al; Synthesis of Fluoropolymers in Supercritical Carbon Dioxide; Science pp. 1-3 (1992).
A.E. Feiring; Fluoroplastics; Organofluorine Chemistry: Principles and Commercial Applications pp. 339-372 (1994).
A.L. Logothetis; Fluoroelastomers ; Organofluorine Chemistry; Principles and Commercial Applications PP. 373-396 (1994).
A.E. Feiring; Introduction to Fluorinated Polymers; American Chemical Society Part 1; pp. 1-59 (1992).
A.T. Worm; Introduction to Fluorocarbon Elastomers; American Chemical Society Part 2; pp. 1-40. (1992).
S.V. Gangal; Tetrafluoroethylene-Ethylene Copolymers; Encyclopedia of Polymer Science and Engineering16, pp. 626-642 (1985).
V. Krukonis et al; Supercritical Fluid Chromatography Analysis of Polystyrene, Polymer Fractionation pp. 146-147, 156-159, 244-245, 248-249.
DeSimone et al., Science, Dispersion Polymerizations in Supercritical Carbon Dioxide, vol. 265, pp. 356-359 (Jul. 15, 1994).

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