Title:
METHOD FOR REMOVING SOLVENT FROM POLYMER SOLUTION
Document Type and Number:
Japanese Patent JP3797987
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for removing a solvent from a polymer solution in a good efficiency.
SOLUTION: This method for removing the solvent using a device equipped with a piping for connecting the gas phase part of a rear stage side solvent-removing tank with the liquid phase part of a front stage side solvent-removing tank and an openness-adjusting means (a pressure-adjusting valve, etc.) arranged at the piping, and removing the solvent (cyclohexane, etc.) from the polymer solution (ethylene-α-olefin-non-conjugated diene copolymer rubber, etc.) with a steam-stripping, etc., is provided by adjusting pressure so that the pressure difference between each of the gas phase parts of the solvent-removing tanks at the rear stage side and front stage side becomes larger by 0.005-0.6 MPa (especially by 0.05-0.3 MPa) than that in the case of wholly opening the openness-adjusting means. Also, in another method for removing the solvent, the pressure is adjusted so that the pressure difference of each the gas phase parts of the solvent-removing tanks at the rear stage side and front stage side becomes ≥0.036 MPa (especially, ≥0.1 MPa).
Inventors:
Nobuaki Katayama
Katsunori Ishii
Kenji Kumai
Katsunori Ishii
Kenji Kumai
Application Number:
JP2003273735A
Publication Date:
July 19, 2006
Filing Date:
July 11, 2003
Export Citation:
Assignee:
JSR CORPORATION
International Environmental Technology Transfer Research Center
International Environmental Technology Transfer Research Center
International Classes:
B01D3/00; B01F7/00; C08F6/10; B01F15/00; B01J19/18; (IPC1-7): C08F6/10; B01D3/00
Domestic Patent References:
| JP62097601A | ||||
| JP2001329016A | ||||
| JP2004091752A |
Foreign References:
| WO2004007567A1 |
Attorney, Agent or Firm:
Kiyoshi Kojima