흡수성 수지 입자

• Main Authors: YOKOYAMA HIDEKI, YABUGUCHI HIROKI, TANIGUCHI MISAKI
• Format: Patent
• Language: Korean
• Published: 13.11.2019
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; 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; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; 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; 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

수용성 에틸렌성 불포화 단량체에서 유래하는 단량체 단위를 함유하는 가교 중합체를 포함하고, 소정의 방법으로 행해지는 팽윤력 시험으로 측정되는 초기 팽윤력이 8N 이상이며, 또한 그 흡수성 수지 입자 전체량에 대하여, 입자경이 250μm 초과 850μm 이하인 입자의 비율이 70질량% 이상이고, 250μm 이하인 입자의 비율이 20질량% 이하인 흡수성 수지 입자가 개시된다. Disclosed are water-absorbent resin particles comprising a crosslinked polymer comprising a monomer unit derived from a water-soluble ethylenically unsaturated monomer, wherein an initial swelling force as measured according to a swelling force test conducted by a predetermined method is 8 N or more, and further, a ratio of the particles having a particle diameter of more than 250 µm and 850 µm or less is 70% by mass or more and a ratio of the particles having a particle diameter of 250 µm or less is 20% by mass or less, with respect to the total amount of the water-absorbent resin particles.