JPS5573885A - Preparation of diaphragm - Google Patents

Preparation of diaphragm

Info

Publication number
JPS5573885A
JPS5573885A JP14604778A JP14604778A JPS5573885A JP S5573885 A JPS5573885 A JP S5573885A JP 14604778 A JP14604778 A JP 14604778A JP 14604778 A JP14604778 A JP 14604778A JP S5573885 A JPS5573885 A JP S5573885A
Authority
JP
Japan
Prior art keywords
diaphragm
matter
membraneous
alkali metal
metal hydroxide
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.)
Pending
Application number
JP14604778A
Other languages
Japanese (ja)
Inventor
Katsutoshi Onishi
Yoshikazu Hori
Tadahiro Kiyotoshi
Masaichi Miyashita
Reiji Yoshimura
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.)
Tokuyama Corp
Original Assignee
Tokuyama Corp
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 Tokuyama Corp filed Critical Tokuyama Corp
Priority to JP14604778A priority Critical patent/JPS5573885A/en
Publication of JPS5573885A publication Critical patent/JPS5573885A/en
Pending legal-status Critical Current

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  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

PURPOSE: To manufacture the diaphragm difficult to swell and able to keep a good water permeability in a long period, by carrying out heat treatment at a specific temperature range after mixing asbestos fiber and fluorine contained polymer under the existence of alkali metal hydroxide water solution and forming membraneous matter.
CONSTITUTION: Membraneous matter is formed by mixing asbestos fiber with 5W 40wt% of fluorine contained polymer against the above fiber under the existence of water solution of alkali metal hydroxide, such as NaOH etc. On this occasion concentration of alkali metal hydroxide is 2.0W8.0 N, preferably 2.0W4.0 N. Also, for example, polytetrafluoroethylene etc. having melting point of more than about 270°C, is used for the above polymer. Next, amied diaphragm is manufactured by heat-treating the above mentioned membraneous matter at 200W250°C, especially 210W230°C after drying or as it is. The above diaphragm is favorably used for manufacturing Cl2 and NaOH by the electrolysis of salt water especially.
COPYRIGHT: (C)1980,JPO&Japio
JP14604778A 1978-11-28 1978-11-28 Preparation of diaphragm Pending JPS5573885A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14604778A JPS5573885A (en) 1978-11-28 1978-11-28 Preparation of diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14604778A JPS5573885A (en) 1978-11-28 1978-11-28 Preparation of diaphragm

Publications (1)

Publication Number Publication Date
JPS5573885A true JPS5573885A (en) 1980-06-03

Family

ID=15398892

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14604778A Pending JPS5573885A (en) 1978-11-28 1978-11-28 Preparation of diaphragm

Country Status (1)

Country Link
JP (1) JPS5573885A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444640A (en) * 1980-09-22 1984-04-24 Diamond Shamrock Corporation Dimensionally stable asbestos-polytetrafluoroethylene diaphragms for chloralkali electrolytic cells
US4806214A (en) * 1985-12-24 1989-02-21 Ppg Industries, Inc. Method of preparing an asbestos diaphragm

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444640A (en) * 1980-09-22 1984-04-24 Diamond Shamrock Corporation Dimensionally stable asbestos-polytetrafluoroethylene diaphragms for chloralkali electrolytic cells
US4806214A (en) * 1985-12-24 1989-02-21 Ppg Industries, Inc. Method of preparing an asbestos diaphragm

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