Title:
METHOD FOR REMOVING ACID COMPONENT IN DETERIORATED ACETATE FILM
Document Type and Number:
WIPO Patent Application WO/2004/096899
Kind Code:
A1
Abstract:
A method for removing an acid component in an deteriorated acetate film, characterized in that it comprises extracting the acid component from the surface and the inside of the deteriorated acetate film, wherein said extraction involves an extraction treatment with a solvent and a pressure reducing (heating) treatment. The method can be suitably used for removing an acid component formed from the deterioration of an acetate film due to its storage and allows the suppression of the acceleration of deterioration owing to the continuation of storage.
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Inventors:
SAWAGUCHI TAKASHI (JP)
YANO SHOICHIRO (JP)
MORIMATSU YOSHITAKA (JP)
SAKAKI MITSURU (JP)
YANO SHOICHIRO (JP)
MORIMATSU YOSHITAKA (JP)
SAKAKI MITSURU (JP)
Application Number:
PCT/JP2004/000232
Publication Date:
November 11, 2004
Filing Date:
January 15, 2004
Export Citation:
Assignee:
UNIV NIHON (JP)
KOKUSAI MICROFILM CO INC (JP)
SAWAGUCHI TAKASHI (JP)
YANO SHOICHIRO (JP)
MORIMATSU YOSHITAKA (JP)
SAKAKI MITSURU (JP)
KOKUSAI MICROFILM CO INC (JP)
SAWAGUCHI TAKASHI (JP)
YANO SHOICHIRO (JP)
MORIMATSU YOSHITAKA (JP)
SAKAKI MITSURU (JP)
International Classes:
B01D11/02; C08J7/02; (IPC1-7): C08J7/02
Foreign References:
| JP2002179819A | 2002-06-26 | |||
| JP2003171485A | 2003-06-20 |
Attorney, Agent or Firm:
Takagi, Chiyoshi (Kojimachi Koyo Bldg. 10, Kojimachi 1-chom, Chiyoda-ku Tokyo 83, JP)
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