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1. WO2020115988 - WATER-ABSORBING RESIN PARTICLES AND PRODUCTION METHOD THEREFOR

Publication Number WO/2020/115988
Publication Date 11.06.2020
International Application No. PCT/JP2019/036663
International Filing Date 19.09.2019
IPC
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
A61F 13/15 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
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
C08F 8/00 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
8Chemical modification by after-treatment
Applicants
  • SDPグローバル株式会社 SDP GLOBAL CO., LTD. [JP]/[JP]
Inventors
  • 松山 泰知 MATSUYAMA Taichi
  • 松原 佑介 MATSUBARA Yusuke
  • 宮島 徹 MIYAJIMA Toru
Agents
  • 古谷 信也 FURUTANI Shinya
Priority Data
2018-22723104.12.2018JP
2018-22724304.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) WATER-ABSORBING RESIN PARTICLES AND PRODUCTION METHOD THEREFOR
(FR) PARTICULES DE RÉSINE ABSORBANT L'EAU ET LEUR PROCÉDÉ DE PRODUCTION
(JA) 吸水性樹脂粒子およびその製造方法
Abstract
(EN)
Provided are: water-absorbing resin particles which, after absorbing water, emit no odor due to a volatile component and which rapidly extract the liquid from the nonwoven fabric in the beginning to attain excellent drying properties and have no problems concerning a rash, etc.; and an absorbent and an absorbent article each comprising or including the water-absorbing resin particles. The water-absorbing resin particles of the present invention comprise a crosslinked polymer (A) comprising essential constituent units derived from a water-soluble vinyl monomer (a1) and/or a hydrolyzable vinyl monomer (a2) and from a crosslinking agent (b), the particles having indefinite shapes resulting from crushing and satisfying the following (i) and (ii). (i) The water retention after 60 minutes in terms of 0.9 wt% physiological saline solution per unit weight is 30-50 g/g. (ii) The capillary absorption (CAP) after 5 minutes defined by the following equation (1) is 6 g/g or greater. CAP (g/g)=(absorption after 5-minute DW)-(water retention after 5 minutes)
(FR)
L'invention concerne : des particules de résine absorbant l'eau qui, après avoir absorbé de l'eau, n'émettent pas d'odeur liée à un composant volatil et qui extraient rapidement le liquide du tissu non tissé au début pour atteindre d'excellentes propriétés de séchage et ne sont à l'origine d'aucun problème de type érythème, etc. ; et un absorbant et un article absorbant comprenant ou incluant chacun ces particules de résine absorbant l'eau. Les particules de résine absorbant l'eau de la présente invention comportent un polymère réticulé (A) comprenant des motifs constitutifs essentiels issus d'un monomère vinylique hydrosoluble (a1) et/ou d'un monomère vinylique hydrolysable (a2) et d'un agent de réticulation (b), les particules présentant des formes indéterminées résultant du broyage et étant conformes aux propositions (i) et (ii) suivantes. (I) La rétention d'eau après 60 minutes en termes de solution saline physiologique à 0,9 % en poids par unité de poids varie de 30 à 50 g/g. (Ii) L'absorption capillaire (CAP) après 5 minutes, comme définie par l'équation suivante (1), est égale ou supérieure à 6 g/g. CAP (g/g) = (poids sec après 5 minutes d'absorption ) - (rétention d'eau après 5 minutes)
(JA)
吸水後に揮発成分による臭気を発生せず、不織布からの初期の液引きが速くドライ性が優れ、更にカブレ等の問題がない吸水性樹脂粒子、これを含む吸収体及び吸収性物品を提供する。本発明は水溶性ビニルモノマー(a1)及び/又は加水分解性ビニルモノマー(a2)、並びに架橋剤(b)を必須構成単位とする架橋重合体(A)を含む吸水性樹脂粒子であって、粒子形状が不定形破砕状であり、下記(i)、(ii)を満たす吸水性樹脂粒子である。 (i)0.9重量%生理食塩水の60分後保水量が単位重量あたり30~50g/g (ii)下記(1)式で定義される5分後毛管吸収量(CAP)が6g/g以上。 CAP(g/g)=(DW5分後吸収量)―(5分後保水量)
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