JPS55165929A - Production of microporous permeable polymer film - Google Patents

Production of microporous permeable polymer film

Info

Publication number
JPS55165929A
JPS55165929A JP7427079A JP7427079A JPS55165929A JP S55165929 A JPS55165929 A JP S55165929A JP 7427079 A JP7427079 A JP 7427079A JP 7427079 A JP7427079 A JP 7427079A JP S55165929 A JPS55165929 A JP S55165929A
Authority
JP
Japan
Prior art keywords
polymer
clay
polymer film
swellable clay
film
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
JP7427079A
Other languages
Japanese (ja)
Inventor
Taketora Kobayashi
Shoji Ogiwara
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.)
Kunimine Industries Co Ltd
Original Assignee
Kunimine Industries Co 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 Kunimine Industries Co Ltd filed Critical Kunimine Industries Co Ltd
Priority to JP7427079A priority Critical patent/JPS55165929A/en
Publication of JPS55165929A publication Critical patent/JPS55165929A/en
Pending legal-status Critical Current

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  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

PURPOSE: To readily obtain a polymer film having extremely excellent air and moisture permeability, by dispersing in a polymer solution, swellable clay which can be swollen and removed at the time when the polymer solution is coagulated into a polymer in a coagulating bath.
CONSTITUTION: A microporous, air-permeable polymer film is produced by dispersing swellable clay such as bentonite in a polymer solution which is converted into a coagulated product by a wet coagulation process; coating a substrate with the resulting dispersion to form a film; and then, immersing the coated substrate in a coagulating bath containing a liquid which acts as a nonsolvent for the polymer but acts as a liquid having such affinity for the swellable clay as to swell and disperse it. Restrictions are not placed on the diameter of the swellable clay and the clay is used, for example, in the form of suspension. Clay which passes a 100 mesh screen can be used in the form of powder. The amount of the clay used is about 30W300%, based on the synthetic polymer.
COPYRIGHT: (C)1980,JPO&Japio
JP7427079A 1979-06-13 1979-06-13 Production of microporous permeable polymer film Pending JPS55165929A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7427079A JPS55165929A (en) 1979-06-13 1979-06-13 Production of microporous permeable polymer film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7427079A JPS55165929A (en) 1979-06-13 1979-06-13 Production of microporous permeable polymer film

Publications (1)

Publication Number Publication Date
JPS55165929A true JPS55165929A (en) 1980-12-24

Family

ID=13542253

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7427079A Pending JPS55165929A (en) 1979-06-13 1979-06-13 Production of microporous permeable polymer film

Country Status (1)

Country Link
JP (1) JPS55165929A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6253348A (en) * 1985-08-30 1987-03-09 Kanebo Ltd Production of sheet having porous grain surface
JP2001198472A (en) * 2000-01-14 2001-07-24 Rengo Co Ltd Photocatalyst structure, its production method, and application of the structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6253348A (en) * 1985-08-30 1987-03-09 Kanebo Ltd Production of sheet having porous grain surface
JP2001198472A (en) * 2000-01-14 2001-07-24 Rengo Co Ltd Photocatalyst structure, its production method, and application of the structure

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