Solutions of perfluorinated polymers in SF.sub.6 with or without

Details Solutions of perfluorinated polymers in SF.sub.6 with or without Solutions of perfluorinated polymers in SF.sub.6 with or without

1996-06-04

1997-12-09

Reddick, Judy M.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524418, 524546, 5253261, 5253264, 525345, 525354, 525388, 528483, 528487, 528490, 528503, C08K 330

Patent

active

056961952

ABSTRACT:
Perfluorinated polymers are dissolved in supercritical carbon dioxide and/or sulfur hexafluoride at elevated temperatures and pressures. The solutions are useful for making foams, spun-bonded or paper-like webs, or for purification of polymers.

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patent: 5403882 (1995-04-01), Huggins
patent: 5530049 (1996-06-01), Dee et al.
DeSimone, J.M. et al, "Synthesis of Fluoropolymers in Supercritical Carbon Dioxide", Science, 257, 945-947 (1992).
McHugh, M. et al, "Supercritical Fluid Extraction Principles and Practice", Butterworths Boston, Chapter 9, pp. 156-163 (1986).
Smith, P. et al, "Dissolution of Poly(tetrafluoroethylene)", Macromolecules, 1222-1227 (1993).
McHugh, M. et al, Encyclopedia of Polymer Science & Engineering, 16, 368-399 (1985).
JP 50-49806 (Abstract), Derwent Publications Ltd., London,
JP 50-49806 (Abstract), Patent Abstracts of Japan, vol. 17, No. 355; Jul. 6, 1993.

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