JPS57143512A - Production of acrylic synthetic fiber - Google Patents
Production of acrylic synthetic fiberInfo
- Publication number
- JPS57143512A JPS57143512A JP2612881A JP2612881A JPS57143512A JP S57143512 A JPS57143512 A JP S57143512A JP 2612881 A JP2612881 A JP 2612881A JP 2612881 A JP2612881 A JP 2612881A JP S57143512 A JPS57143512 A JP S57143512A
- Authority
- JP
- Japan
- Prior art keywords
- nitric acid
- bath
- fiber
- polymer
- treated
- 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
- Artificial Filaments (AREA)
Abstract
PURPOSE: When an acrylonitirile polymer is made into fiber from its nitric acid solution by the wet method, the fiber gel coagulated in the nitric acid bath is treated with another specific nitric acid bath to produce the titled fiber with improved humid-heat deformation on dyeing and with good physical properties.
CONSTITUTION: An acrylonitrile polymer containing more than 80wt% acrylonitrile is dissolved in a nitric acid solvent such as about 55W80% nitric acid aqueous solution at a temperature lower than 20°C to form a spinning dope containing 10W25% polymer. The resultant dope is extruded into the first bath (coagulation bath) containing 10W50% nitric acid to form fiber gel. The resultant fiber gel is treated with the second bath whose nitric acid concentration is equal to or higher than the first bath at higher temperature to give the objective fiber. Preferably, the nitric acid concentration of the second bath is less than 55%, the treating temperature is lower than 60°C, time is 5secW10min.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2612881A JPS57143512A (en) | 1981-02-26 | 1981-02-26 | Production of acrylic synthetic fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2612881A JPS57143512A (en) | 1981-02-26 | 1981-02-26 | Production of acrylic synthetic fiber |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57143512A true JPS57143512A (en) | 1982-09-04 |
Family
ID=12184919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2612881A Pending JPS57143512A (en) | 1981-02-26 | 1981-02-26 | Production of acrylic synthetic fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57143512A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50107217A (en) * | 1974-02-04 | 1975-08-23 | ||
JPS50116719A (en) * | 1974-02-23 | 1975-09-12 | ||
JPS50121526A (en) * | 1974-03-14 | 1975-09-23 |
-
1981
- 1981-02-26 JP JP2612881A patent/JPS57143512A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50107217A (en) * | 1974-02-04 | 1975-08-23 | ||
JPS50116719A (en) * | 1974-02-23 | 1975-09-12 | ||
JPS50121526A (en) * | 1974-03-14 | 1975-09-23 |
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