Title:
低置換度ヒドロキシプロピルセルロース
Document Type and Number:
Japanese Patent JP3572213
Kind Code:
B2
Abstract:
The present invention provides a hydroxypropylcellulose having a low substitution degree, capable of giving a solution state which is excellent in transparency and stable in a wide temperature range, by controlling the amount of the substituted hydroxypropyl groups. This hydroxypropylcellulose having a low substitution degree has an average substituted hydroxypropyl group content of 0.1-0.4 mole per glucose unit. Therein, the glucose units each substituted by two or more moles of the hydroxypropyl groups are contained in an amount of <=5% based on the number of all the glucose units, and the transmittancy of a solution containing the hydroxypropylcellulose in a concentration of 2 wt.% in a 10 wt.% sodium hydroxide aqueous solution is >=90% at 10-50 DEG C.
Inventors:
Hiroshi Umezawa
Naosuke Maruyama
Sakae Ohara
Naosuke Maruyama
Sakae Ohara
Application Number:
JP863699A
Publication Date:
September 29, 2004
Filing Date:
January 18, 1999
Export Citation:
Assignee:
Shin-Etsu Chemical Co., Ltd.
International Classes:
C08L1/02; C08B11/08; C08B15/00; (IPC1-7): C08B11/08; C08L1/02
Domestic Patent References:
| JP6100601A | ||||
| JP7324101A |
Attorney, Agent or Firm:
Nao Okuyama
Arihara Koichi
Shoichi Okuyama
Arihara Koichi
Shoichi Okuyama