Title:
DISSOLUTION OF CARBOXYMETHYLCELLULOSE SODIUM SALT
Document Type and Number:
Japanese Patent JP3648573
Kind Code:
B2
Abstract:
PURPOSE: To easily shorten the time needed for dissolving carboxymethyl- cellulose sodium salt (CMC-Na) in water and prevent the solution from reducing its viscosity after the dissolution by dissolving CMC-Na in an aqueous solution of a low-viscosity CMC-Na.
CONSTITUTION: Preliminarily, (A) an aqueous 2% CMC-Na solution of a low viscosity, having ≤5mpa.s viscosity at 25°C, preferably 0.1-2%, particularly 0.5-1.0% concentration is prepared, then (B) CMC-Na, preferably whose 1% aqueous solution on the anhydrous base gives 5-20,000mpa.s, is dissolved in the preliminarily prepared solution. The concentration of CMC-Na as a component B in the objective solution is preferably 0.2-20%.
Inventors:
Keiichi Sato
Yoko Tanaka
Yoko Tanaka
Application Number:
JP7151595A
Publication Date:
May 18, 2005
Filing Date:
March 29, 1995
Export Citation:
Assignee:
Daiichi Kogyo Pharmaceutical Co., Ltd.
International Classes:
C08B11/08; C08B11/12; C08J3/05; (IPC1-7): C08B11/12; C08J3/05
Domestic Patent References:
| JP6079001A | ||||
| JP425502A | ||||
| JP5214162A | ||||
| JP1149801A |
Attorney, Agent or Firm:
Tamako Tsutada
Masato Tsuda
Hitoshi Seki
Masato Tsuda
Hitoshi Seki
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