Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1996-11-26
1999-11-02
Mullis, Jeffrey C.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
536 64, 536 65, 536 69, 536 76, 536 82, 536 83, C08B 306, C08B 308, C08B 322, C08B 326
Patent
active
059773464
ABSTRACT:
A fatty acid ester of cellulose having excellent transparency, filterability and spinnability in spite of its high content of mannose and xylose, wherein the total molar content of mannose and xylose accounts for at least 7% of that of glucose, mannose and xylose, and the amount of filtration satisfies a specified requirement. Such a fatty acid ester of cellulose is prepared by using a pulp having a low .alpha.-cellulose content as a raw material and a fatty acid corresponding to the ester as a diluent and adding an organic solvent in an amount of at least 10% by weight based on the diluent in any step during the preparation. In the preparation of cellulose diacetate, which excellent filterability and transparency, by the acetic acid process, the cellulose diacetate obtained by aging is dissolved in a solvent which can dissolve it and the resulting cellulose diacetate is recovered.
REFERENCES:
patent: 2809191 (1957-10-01), Sloan et al.
patent: 2827455 (1958-03-01), Wells et al.
patent: 3767642 (1973-10-01), Campbell et al.
patent: 3846403 (1974-11-01), Gibney et al.
patent: 3870703 (1975-03-01), Gibney et al.
patent: 4306060 (1981-12-01), Ikemoto
patent: 4439605 (1984-03-01), Yabune et al.
patent: 5028702 (1991-07-01), Matsumoto et al.
patent: 5036900 (1991-08-01), Burley et al.
patent: 5047180 (1991-09-01), Steiner et al.
patent: 5371207 (1994-12-01), Zhuang
patent: 5608050 (1997-03-01), Kuo et al.
Mokuzai Gakkaishi vol. 34, No. 4, pp. 346-353 (1988) "Characterization of Acetone-Insoluble Substances in Cellulose Acetate as Prepared by an Acetylation/Ripening Process from . . . ".
Abstracts of the 43rd Annual Meeting of the Japan Wood Research Society, p. 285, and English translation thereof.
Patent Abstracts of Japan, vol. 11, No. 167 (C-425), May 28, 1987 & JP-A-62 000 501 (Nakamura Hiroyuki) Jan. 6, 1987.
Chemical Abstracts, vol. 96, No. 1, Jan. 1982, Columbus, OH; abstract No. 8426w, p. 106, col. L; & SU-A-861 353 (Vladimir Chemical Plant) Sep. 7, 1981.
Chemical Abstract of Canadian Patent 321,228 Apr., 1932.
Asai Tanemi
Habu Naoto
Iwata Ryouta
Kaino Yoshiaki
Matsumura Hiroyuki
Daicel Chemical Industries Ltd.
Mullis Jeffrey C.
LandOfFree
Fatty acid ester of cellulose, cellulose diacetate and processes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fatty acid ester of cellulose, cellulose diacetate and processes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fatty acid ester of cellulose, cellulose diacetate and processes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2137189