JPS55165929A - Production of microporous permeable polymer film - Google Patents
Production of microporous permeable polymer filmInfo
- 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
Links
Landscapes
- 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
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)
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 |
-
1979
- 1979-06-13 JP JP7427079A patent/JPS55165929A/en active Pending
Cited By (2)
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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