JPS54101888A - Production of tetrafluoroethylene polymer - Google Patents

Production of tetrafluoroethylene polymer

Info

Publication number
JPS54101888A
JPS54101888A JP870678A JP870678A JPS54101888A JP S54101888 A JPS54101888 A JP S54101888A JP 870678 A JP870678 A JP 870678A JP 870678 A JP870678 A JP 870678A JP S54101888 A JPS54101888 A JP S54101888A
Authority
JP
Japan
Prior art keywords
polymerization
dicarboxylic acid
polymer
tetrafluoroethylene
dispersant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP870678A
Other languages
Japanese (ja)
Other versions
JPS5928334B2 (en
Inventor
Tetsuo Shimizu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP870678A priority Critical patent/JPS5928334B2/en
Publication of JPS54101888A publication Critical patent/JPS54101888A/en
Publication of JPS5928334B2 publication Critical patent/JPS5928334B2/en
Expired legal-status Critical Current

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  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

PURPOSE: The polymerization of tetrafluoroethylene is conducted in an aqueous medium containing a water-soluble persulfate salt and a dispersant in the presence of a dicarboxylic acid to produce title polymer with improved dimension change when formed by paste extrusion and sintered.
CONSTITUTION: In the polymerization of tetrafluoroethylene in aqueous medium containing a water-soluble persulfate salt and a dispersant, a dicarboxylic acid of the formula (R is 1 - 5C alkylene) is added to the medium in an amount of 0.005 W 0.2 wt% based on the medium. In the polymerization, the combined use of at least one selected from hexafluoropropene, ω-hydroperfluoroolefin and trifluorochloroethylene as a polymer modifier can further reduce the dimension change on the calcination of extruded products of the polymer. The dicarboxylic acid used is, e.g., malonic, succinic or adipic acid.
COPYRIGHT: (C)1979,JPO&Japio
JP870678A 1978-01-27 1978-01-27 Method for producing tetrafluoroethylene polymer Expired JPS5928334B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP870678A JPS5928334B2 (en) 1978-01-27 1978-01-27 Method for producing tetrafluoroethylene polymer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP870678A JPS5928334B2 (en) 1978-01-27 1978-01-27 Method for producing tetrafluoroethylene polymer

Publications (2)

Publication Number Publication Date
JPS54101888A true JPS54101888A (en) 1979-08-10
JPS5928334B2 JPS5928334B2 (en) 1984-07-12

Family

ID=11700371

Family Applications (1)

Application Number Title Priority Date Filing Date
JP870678A Expired JPS5928334B2 (en) 1978-01-27 1978-01-27 Method for producing tetrafluoroethylene polymer

Country Status (1)

Country Link
JP (1) JPS5928334B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008223019A (en) * 2007-02-16 2008-09-25 Daikin Ind Ltd Polytetrafluoroethylene fine powder and method for manufacturing polytetrafluoroethylene

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6338824U (en) * 1986-08-29 1988-03-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008223019A (en) * 2007-02-16 2008-09-25 Daikin Ind Ltd Polytetrafluoroethylene fine powder and method for manufacturing polytetrafluoroethylene

Also Published As

Publication number Publication date
JPS5928334B2 (en) 1984-07-12

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