JPS57100143A - Preparation of porous film or filament - Google Patents
Preparation of porous film or filamentInfo
- Publication number
- JPS57100143A JPS57100143A JP17774880A JP17774880A JPS57100143A JP S57100143 A JPS57100143 A JP S57100143A JP 17774880 A JP17774880 A JP 17774880A JP 17774880 A JP17774880 A JP 17774880A JP S57100143 A JPS57100143 A JP S57100143A
- Authority
- JP
- Japan
- Prior art keywords
- solvent
- polymers
- soluble
- solutions
- polymer
- 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)
- Artificial Filaments (AREA)
Abstract
PURPOSE: To prepare easily a film or filament of porous structure having improved performances and mechanical strength, by dissolving respectively polymers having different solubilities in solvents which are slightly soluble but compatible each othr to give solutions, blending and dispersing the solutions, followed by molding and drawing.
CONSTITUTION: Solutions of polymers having different solubilities respectively dissolved in at least two solvents which are slightly soluble but compatible each other, for example, one solvent is water or an aqueous solvent, e.g., an aqueous solution of inorganic salt. etc., and the other solvent is an organic solvent, e.g., saturated hydrocarbon, etc. are dispersed and blended, molded, and drawn to form porous structure having pores at the interface of the polymers. A polymer, e.g., acrylic type polymer, cellulose type derivative, etc. soluble in an aqueous solvent, and a polymer, e.g., rubber, polyester, etc. substantially in-soluble in a aqueous solvent are used as the polymers. The molding is carried out by wet molding followed by removal of the solvent, and the drawing is monoazxil or biaxial stretching in a draw ratio of at least 1.05.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17774880A JPS57100143A (en) | 1980-12-15 | 1980-12-15 | Preparation of porous film or filament |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17774880A JPS57100143A (en) | 1980-12-15 | 1980-12-15 | Preparation of porous film or filament |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57100143A true JPS57100143A (en) | 1982-06-22 |
Family
ID=16036432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17774880A Pending JPS57100143A (en) | 1980-12-15 | 1980-12-15 | Preparation of porous film or filament |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57100143A (en) |
-
1980
- 1980-12-15 JP JP17774880A patent/JPS57100143A/en active Pending
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