Title:
ポリマー溶液濃縮方法及び装置
Document Type and Number:
Japanese Patent JP4208517
Kind Code:
B2
Abstract:
An low concentration dope is fed through a nozzle into a concentrating apparatus, and flash evaporation of the low concentration dope is performed at an end of the nozzle. The low concentration dope is concentrated thereby to an concentrating dope which is contained and heated in the concentrating apparatus. Thus part of solvents of the low concentration dope and the concentrating dope is evaporated to a solvent gas. The solvent gas is cooled and condensed in a condensing section of the concentrating apparatus, and thereafter drawn through a first exit from the concentrating apparatus. The concentrating dope is concentrated to a high concentration dope, which is drawn through a second exit from the concentrating apparatus.
Inventors:
Kosuke Katai
Tadahiro Tsujimoto
Takahashi Misao
Tadahiro Tsujimoto
Takahashi Misao
Application Number:
JP2002230362A
Publication Date:
January 14, 2009
Filing Date:
August 07, 2002
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
B01D1/00; G02B5/30; B01D3/06; B01D5/00; B29C41/24; B29C41/32; C08B3/22; C08J3/02; C08J5/18; C08J11/02; C09D101/12; B29K1/00; B29L7/00; C08L101/00
Domestic Patent References:
| JP6190202A |
Foreign References:
| US2538540 |
Attorney, Agent or Firm:
Kazunori Kobayashi
Shigeru Iijima
Kobayashi Hideyoshi
Shigeru Iijima
Kobayashi Hideyoshi