Title:
重合体の製造方法
Document Type and Number:
Japanese Patent JP7285664
Kind Code:
B2
Abstract:
To provide a method for producing a polymer reduced in an amount of residual solvent by efficiently removing a solvent from a polymer solution in which the polymer is dissolved in the solvent.SOLUTION: There is provided a method for producing a polymer reduced in an amount of residual solvent from a polymer solution in which the polymer is dissolved in the solvent including the steps of: reducing a pressure of a system containing the polymer solution to 1 kPa or less to distill off the solvent; introducing a substance whose state is a gas at 0°C into the system to increase the pressure of the system to 10 kPa or more; and reducing the pressure of the system to 1 kPa or less to reduce the amount of residual solvent in the polymer, wherein the polymer reduced in an amount of residual solvent has a viscosity at 23°C of 0.1 Pa s to 300 Pa s.SELECTED DRAWING: None
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Inventors:
Akinori Sato
Takahiro Saito
Takahiro Saito
Application Number:
JP2019048342A
Publication Date:
June 02, 2023
Filing Date:
March 15, 2019
Export Citation:
Assignee:
Kaneka Corporation
International Classes:
C08F6/10; C08F20/10; C08F30/08
Domestic Patent References:
| JP2000143721A | ||||
| JP2015124247A | ||||
| JP2011074373A | ||||
| JP2015054917A | ||||
| JP53098383A |
Other References:
飽和水蒸気量,ウィキペディア,2022年12月05日
Attorney, Agent or Firm:
Ariko Patent Office
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