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Title:
PROCESS FOR OBTAINING ACTIVATED POLYSACCHARIDE AND POLYSACCHARIDE PRODUCED BY THIS PROCESS AND APPLICATION THEREOF
Document Type and Number:
Japanese Patent JP2002161101
Kind Code:
A
Abstract:

To provide a process for obtaining activated polysaccharide wherein the quantity of ammonia left therein is less than 0.2% by weight.

When a polysaccharide, as a starting material, is contacted with liquid ammonia in the presence of a sufficient quantity of liquid ammonia at least to wet the surface of the polysaccharide starting material under the initial pressure higher than atmospheric pressure, and at a temperature, at lowest, more than 25°C, and when the mixture is successively released from the pressure in a manner that effective volume of the polysaccharide/liquid ammonia system increases explosively while the pressure is decreased at least 5 bar, and by means of contacting the polysaccharide/liquid ammonia system in the pressured chamber, followed by transporting this polysaccharide/liquid ammonia system into an explosion chamber which has a larger volume than the pressured chamber.


Inventors:
Karstens, Ties
Steinmeier, Hans
Application Number:
JP2001000343847
Publication Date:
June 04, 2002
Filing Date:
March 22, 1996
Export Citation:
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Assignee:
RHONE-POULENC RHODIA AG
International Classes:
C08B1/00; C08B1/06; C08B30/00; C08B30/12; C08B37/00; C08B37/08; D01F2/02; D01F2/24; (IPC1-7): C08B1/00; C08B30/00; C08B37/00; C08B37/08
Attorney, Agent or Firm:
永井 義久