METHOD FOR PRODUCING WATER-SOLUBLE POLYMER

• Main Authors: SUZUKI YUICHI, YAMAGUCHI YOSHIMICHI
• Format: Patent
• Language: English
• Published: 10.04.2002
• Edition: 7
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS; DERIVATIVES THEREOF; FOODS OR FOODSTUFFS; FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J; HUMAN NECESSITIES; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; POLYSACCHARIDES; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES

PROBLEM TO BE SOLVED: To provide a method for producing a water-soluble polymer having a wide range of uses from a water-insoluble natural polymer. SOLUTION: This method for producing the water-soluble polymer derived from the water-insoluble natural high polymer is characterized by bringing the water-insoluble natural high polymer into contact with water at a high temperature under a high pressure in which the temperature is within the range exceeding 100 deg.C to 300 deg.C and the pressure is in a higher pressure state than the vapor pressure of water at the temperature and partially hydrolyzing the water-insoluble natural polymer.