WATER-ABSORBING RESIN PARTICLES AND ABSORBENT ARTICLE

• Main Author: KAWAHARA Toru
• Format: Patent
• Language: English; French; Japanese
• Published: 18.03.2021
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS BASED THEREON; 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; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MEDICAL OR VETERINARY SCIENCE; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PROSTHESES; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OR PROTECTION OF EYES OR EARS

Disclosed are water-absorbing resin particles 10a constituted of polymer particles that have been surface crosslinked by a surface crosslinking agent. When the water-absorbing resin particles are allowed to absorb physiological saline solution for ten minutes under a load of 2.07 kPa, the amount of water absorbed per 1.00 g of water-absorbing resin particles is 5 to 35 mL/g. The ten-minute value of non-pressurized DW of the water-absorbing resin particles is 1 to 50 mL/g. L'invention concerne des particules de résine absorbant l'eau (10a) constituées de particules de polymère qui ont été réticulées en surface par un agent de réticulation de surface. Lorsque les particules de résine absorbant l'eau sont autorisées à absorber une solution saline physiologique pendant dix minutes sous une charge de 2,07 kPa, la quantité d'eau absorbée par 1,00 g de particules de résine absorbant l'eau est de 5 à 35 mL/g. La valeur à dix minutes du DW non pressurisé des particules de résine absorbant l'eau est de 1 à 50 mL/g. 表面架橋剤によって表面架橋された重合体粒子を含む、吸水性樹脂粒子１０ａが開示される。吸水性樹脂粒子に２．０７ｋＰａの荷重下で生理食塩水を１０分間吸収させたときの吸水性樹脂粒子１．００ｇ当たりの吸水量が５～３５ｍＬ／ｇである。吸水性樹脂粒子の無加圧ＤＷの１０分値が、１～５０ｍＬ／ｇである。