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1. WO2020095811 - WATER-ABSORBING RESIN

Publication Number WO/2020/095811
Publication Date 14.05.2020
International Application No. PCT/JP2019/042766
International Filing Date 31.10.2019
IPC
C08F 20/06 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
20Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide, or nitrile thereof
02Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
04Acids; Metal salts or ammonium salts thereof
06Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
A61F 13/53 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
13Bandages or dressings; Absorbent pads
15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
53characterised by the absorbing medium
B01J 20/26 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
20Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
22comprising organic material
26Synthetic macromolecular compounds
B01J 20/28 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
20Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
28characterised by their form or physical properties
C08J 3/24 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
3Processes of treating or compounding macromolecular substances
24Crosslinking, e.g. vulcanising, of macromolecules
Applicants
  • 住友精化株式会社 SUMITOMO SEIKA CHEMICALS CO., LTD. [JP]/[JP]
  • スミトモ セイカ シンガポール プライベート リミテッド SUMITOMO SEIKA SINGAPORE PTE. LTD. [SG]/[SG]
Inventors
  • 鄙山 鉄博 HINAYAMA, Tetsuhiro
  • チェン ソッ キァット CHENG, Sok Kiat
Agents
  • 特許業務法人三枝国際特許事務所 SAEGUSA & PARTNERS
Priority Data
2018-20821205.11.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) WATER-ABSORBING RESIN
(FR) RÉSINE ABSORBANT L'EAU
(JA) 吸水性樹脂
Abstract
(EN)
Provided are: a water-absorbing resin that can reduce the amount of backflow of the liquid being absorbed, even when the water-absorbing resin is used at a low content in an absorbent body; and an absorbent article that uses an absorbent body that contains the absorbent resin. The water-absorbing resin is a crosslinked polymer from water-soluble ethylenically unsaturated monomer and has a dry-up index, as given by formula (1), of at least 1.85. The overall absorption capacity term α and the water absorption rate term β in formula (1) are given by formulas (2) and (3).
(FR)
La présente invention concerne : une résine absorbant l’eau qui peut réduire la quantité de reflux du liquide qui est absorbé, même lorsque la résine absorbant l’eau est utilisée sous une faible teneur dans un corps absorbant ; et un article absorbant qui utilise un corps absorbant qui contient la résine absorbante. La résine absorbant l’eau est un polymère réticulé à partir d’un monomère éthyléniquement insaturé soluble dans l’eau et présente un indice de séchage, tel que présenté par la formule (1), d’au moins 1,85. Le terme de capacité d’absorption globale α et le terme de taux d’absorption d’eau β dans la formule (1) sont présentés par les formules (2) et (3).
(JA)
吸収体において吸水性樹脂が少ない含有量で用いられた際でも、被吸収液の逆戻り量を低減できる吸水性樹脂及びその吸収性樹脂を含む吸収体を用いた吸収性物品が提供される。 当該吸水性樹脂は、水溶性エチレン性不飽和単量体の重合体架橋物である吸水性樹脂であって、以下式(1)で示されるドライアップ指数が1.85以上である吸水性樹脂である。式(1) ここで、総括吸収容量項αと吸水速度項βは、以下式(2)および(3)により求められる。
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