Title:
METHOD FOR PRODUCING CELLULOSE ACETATE FILM
Document Type and Number:
Japanese Patent JP3927202
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing an excellent cellulose acetate film without using any chlorinated organic solvent such as methylene chloride.
SOLUTION: The cellulose acetate film is produced by a process for cooling down a mixture of cellulose acetate with an organic solvent and containing 10-40 wt.% cellulose acetate to -100 to -10°C, wherein the cellulose acetate has 58.0-62.5% mean degree of acetylation and 250-400 viscosity-average degree of polymerization and the organic solvent substantially comprises acetone, a process for preparing the cellulose acetate solution by heating the cooled mixture to dissolve the cellulose acetate in the organic solvent to 0-50°C, a process for casting the cellulose acetate solution on a substrate and a process for volatilizing the solvent to form a cellulose acetate film.
Inventors:
Kazuhiro Shimoda
Masahiko Murayama
Yamazaki alphanumeric
Toru Shibata
Shu Shimamoto
Hiroyuki Takemoto
Naoto Hanyu
Masahiko Murayama
Yamazaki alphanumeric
Toru Shibata
Shu Shimamoto
Hiroyuki Takemoto
Naoto Hanyu
Application Number:
JP2004190382A
Publication Date:
June 06, 2007
Filing Date:
June 28, 2004
Export Citation:
Assignee:
Daicel Chemical Industry Co., Ltd.
FUJIFILM Corporation
FUJIFILM Corporation
International Classes:
B29C41/26; G02F1/1335; B29C41/24; B29C41/28; C08J5/18; B29K1/00; B29L7/00; C08L1/12; (IPC1-7): C08J5/18; B29C41/24; G02F1/1335; //B29K1:00; B29L7:00; C08L1:12
Domestic Patent References:
| JP5017844B2 |
Other References:
上出健二ら,三酢酸セルロースのアセトン溶液からの乾式紡糸,繊維機械学会誌,日本,日本繊維機械学会,1981年 7月25日,34巻/7号,T149-T153
Attorney, Agent or Firm:
Yanagawa Yasuo