Method for producing water absorbent resin

The purpose of the present invention is to provide a method for producing a water absorbent resin that has high production efficiency and excellent water absorbing capability. The present invention pertains to a method for producing a water absorbent resin that forms a physical gel through water abs...

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Bibliographic Details
Main Authors NISHIMOTO, TOMOYUKI, MIYATA, MANABU, HOSOMI, TETSUYA, NOZAKI, TAKAHIRO, TANAKA, ATSUSHI
Format Patent
LanguageChinese
English
Published 01.02.2024
Subjects
BANDAGES, DRESSINGS OR ABSORBENT PADS
CHEMISTRY
COMPOSITIONS BASED THEREON
DERIVATIVES THEREOF
DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS
FILTERS IMPLANTABLE INTO BLOOD VESSELS
FIRST-AID KITS
FOMENTATION
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES
POLYSACCHARIDES
PROSTHESES
THEIR PREPARATION OR CHEMICAL WORKING-UP
TREATMENT OR PROTECTION OF EYES OR EARS
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Summary:The purpose of the present invention is to provide a method for producing a water absorbent resin that has high production efficiency and excellent water absorbing capability. The present invention pertains to a method for producing a water absorbent resin that forms a physical gel through water absorption, the method comprising: a step (a1) for obtaining a partial degradation product of starch by lowering the molecular weight of starch; a step (a2) for obtaining a water-soluble polymer by introducing an acidic group to the partial degradation product of starch obtained in the step (a1); and a step (a3) for drying the water-soluble polymer in the presence of water at 70-180 DEG C so as to achieve a solid content of 90% or more.
Bibliography:Application Number: TW20230112480