Title:
SOLUTION OF PERFLUORINATED POLYMER
Document Type and Number:
Japanese Patent JPS5650947
Kind Code:
A
Abstract:
Soln. of fluoropolymer (I) in ahalogenated solvent (II) contains over 0.5 (over 3) wt.% (I) w.r.t. the soln. at 25 deg. C. (II) is a perhalogenated, satd. liquid with 1-3 C alkyl and alkyl ether segments and terminal polar gp(s)., which are either alkyl carboxylic ester or sulphonyl fluoride gps., the halogen being F, Cl, Br or I. (I) is a copolymer of TFE and vinyl monomers contg. SO2F or carboxyl gps. (I) is specified for use in the prodn. and repair of membranes for liquid permeation processes, esp. hyperfiltration, electrolysis (of aq. NaCl soln.) and ultrafiltration; and for coating an inert support (e.g. for use as catalyst). Solns. of (I) of high equiv. wt. (specifically over 1000) can be prepd.
Inventors:
RAIMUNDO HEINRITSUCHI SHIRUBA
PAURU RAFUAERU RESUNITSUKU
ROJIYAA ARUTON SUMISU
PAURU RAFUAERU RESUNITSUKU
ROJIYAA ARUTON SUMISU
Application Number:
JP13178180A
Publication Date:
May 08, 1981
Filing Date:
September 24, 1980
Export Citation:
Assignee:
DU PONT
International Classes:
C08L27/12; B01D71/32; B01J31/06; B05D5/00; B05D7/02; B05D7/26; C08F14/00; C08F214/26; C08J5/22; C08L1/00; C08L27/00; C09D127/12; C25B13/08; H01M2/16; (IPC1-7): C08F14/18; C08J3/10; C08J5/18; C08L27/10; C09D3/78