Water absorbent matter and method for producing it as well as water absorbent and method for producing it
The present invention provides a water absorbent matter which is physically and chemically stable, difficult in shifting and falling-off of a water-absorbent resin particle and from a cellulose fiber, and thereby, has superior water-absorbent properties. A water absorbent matter like this is made by...
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| creator | WADA, KATSUYUKI SHIMOMURA, TADAO HARADA, NOBUYUKI OBARA, HISANORI SANO, YOSHINORI |
| description | The present invention provides a water absorbent matter which is physically and chemically stable, difficult in shifting and falling-off of a water-absorbent resin particle and from a cellulose fiber, and thereby, has superior water-absorbent properties. A water absorbent matter like this is made by containing a water-absorbent resin particle having an acidic group such as a carboxyl group on the surface, a cellulose fiber, and a cationic high-molecular compound having a weight-average molecular weight of 2,000 or more, so that the water-absorbent resin particle is firmly set on the cellulose fiber by a cationic high-molecular compound in the presence of water. A water absorbent may be used, which is made by treating the surface of a water-absorbent resin particle having an acidic group with a crosslinking agent having two or more of a functional group capable of making a covalent bond by reacting with the acidic group to crosslink the particle at a part of the acidic group, and then, mixing the particle with a cationic high-molecular compound of an weight-average molecular weight 2,000 or more capable of making an ionic bond by reacting with the acidic group. |
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A water absorbent may be used, which is made by treating the surface of a water-absorbent resin particle having an acidic group with a crosslinking agent having two or more of a functional group capable of making a covalent bond by reacting with the acidic group to crosslink the particle at a part of the acidic group, and then, mixing the particle with a cationic high-molecular compound of an weight-average molecular weight 2,000 or more capable of making an ionic bond by reacting with the acidic group.</description><language>eng ; fre ; ger</language><subject>BANDAGES, DRESSINGS OR ABSORBENT PADS ; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES ; CHEMISTRY ; COMPOSITIONS BASED THEREON ; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. 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| language | eng ; fre ; ger |
| recordid | cdi_epo_espacenet_EP0493011B1 |
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| subjects | BANDAGES, DRESSINGS OR ABSORBENT PADS CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS DISINFECTION, STERILISATION, OR DEODORISATION OF AIR FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METALLURGY METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL ORGANIC MACROMOLECULAR COMPOUNDS ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OR PROTECTION OF EYES OR EARS |
| title | Water absorbent matter and method for producing it as well as water absorbent and method for producing it |
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