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1. (WO1991018042) WATER-ABSORBENT RESIN PARTICLES FOR ABSORBENT STRUCTURES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/018042 International Application No.: PCT/GB1991/000780
Publication Date: 28.11.1991 International Filing Date: 17.05.1991
Chapter 2 Demand Filed: 16.12.1991
IPC:
A61L 15/60 (2006.01) ,C08J 3/12 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
L
METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
15
Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
16
Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
42
Use of materials characterised by their function or physical properties
60
Liquid-swellable gel-forming materials, e.g. super-absorbents
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
J
WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
3
Processes of treating or compounding macromolecular substances
12
Powdering or granulating
Applicants:
THE DOW CHEMICAL COMPANY [US/US]; 2030 Dow Center Abbott Road Midland, MI 48640, US (AllExceptUS)
BALL, Jeffrey, Maurice [GB/GB]; GB (UsOnly)
Inventors:
BALL, Jeffrey, Maurice; GB
Agent:
RAYNOR, John; W.H. Beck, Greener & Co. 7 Stone Buildings Lincoln's Inn London WC2A 3SZ, GB
Priority Data:
9011250.919.05.1990GB
9102143.631.01.1991GB
Title (EN) WATER-ABSORBENT RESIN PARTICLES FOR ABSORBENT STRUCTURES
(FR) PARTICULES DE RESINE ABSORBANT L'EAU POUR STRUCTURES ABSORBANTES
Abstract:
(EN) Water-absorbent resin particles comprising a carboxyl containing water-absorbent resin characterized in that the water-absorbent resin is rendered adhesive by the incorporation of a thermoplastic polymer with hydrophilic character. Optionally, a flow control additive is also employed. In another embodiment the invention comprises water-absorbent structures or articles which comprise a woven or nonwoven mass of fibers of a desired shape characterized in that adhesivized water-absorbent resin particles of the invention are bound to the fibers of the woven or nonwoven mass of fibers. The particles must be prepared by blending water-absorbent resin particles containing carboxyl moieties with a thermoplastic resin having hydrophilic character until the mixture no longer flows freely and, optionally, adding to the water-absorbent resin particles and thermoplastic polymer mixture a flow control additive and blending until the mixture flows freely.`
(FR) Particules de résine absorbant l'eau et comprenant un carboxyle contenant de la résine absorbant l'eau, caractérisées par le fait que ladite résine est rendue adhésive par l'incorporation d'un polymère thermoplastique à caractère hydrophile. Un adjuvant de régulation d'écoulement peut aussi éventuellement être employé. Selon un autre mode de réalisation, l'invention comprend des structures ou des articles absorbant l'eau qui comprennent une masse tissée ou non tissée de fibres d'une forme désirée, et qui sont caractérisées par le fait que les particules de résine absorbant l'eau et rendues adhésives de l'invention sont liées aux fibres composant la masse de fibres tissées ou non tissées. On prépare les particules en mélangeant les particules de résine absorbant l'eau et contenant des parties de carboxyle avec un polymère thermoplastique à caractère hydrophile jusqu'à ce que le mélange ne coule plus librement et, éventuellement, en ajoutant audit mélange un adjuvant de régulation d'écoulement et en les mélangeant jusqu'à ce que le mélange coule librement.
Designated States: AT, AU, BB, BG, BR, CA, CH, DE, DK, ES, FI, GB, HU, JP, KP, KR, LK, LU, MC, MG, MW, NL, NO, PL, RO, SD, SE, SU, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, ML, MR, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0530231JPH05507511CA2082623AU1991078630