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1. (WO1991008778) MEMBRANES FOR ABSORBENT PACKETS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/008778 International Application No.: PCT/US1990/006998
Publication Date: 27.06.1991 International Filing Date: 30.11.1990
Chapter 2 Demand Filed: 21.05.1991
IPC:
A61L 15/28 (2006.01) ,B01D 61/00 (2006.01) ,B01D 71/16 (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
22
containing macromolecular materials
28
Polysaccharides or their derivatives
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
61
Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
71
Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06
Organic material
08
Polysaccharides
12
Cellulose derivatives
14
Esters of organic acids
16
Cellulose acetate
Applicants:
ALLIED-SIGNAL INC. [US/US]; Law Department (C.A. McNally) P.O. Box 2245R Morristown, NJ 07962-2245, US
Inventors:
WHITE, Lloyd, Steven; US
Agent:
ROONEY, Gerard, P.; Allied-Signal Inc. Law Dept. (C.A. McNally) 101 Columbia Road P.O. Box 2245 Morristown, NJ 07962-2245, US
WELLS, Harold, N.; Allied-Signal Inc. Law Department (C.A. McNally) P.O. Box 2245 Morristown, NJ 07962, US
Priority Data:
447,72208.12.1989US
Title (EN) MEMBRANES FOR ABSORBENT PACKETS
(FR) MEMBRANES POUR ARTICLES ABSORBANTS
Abstract:
(EN) An absorbent article comprising a cellulosic membrane about 5 to 50 $(g)mm thick prepared by casting a film from solution of a cellulose derivative in a suitable solution and these formed into a packet which encapsulates an osmotic promoter, particularly sodium chloride, sugar or other suitable compound, peferably having a molecular weight below about 500. The packet is capable of tacking up at least 0.001 g/cm2/min of water and retaining it against an external pressure of at least 0.689 kPa.
(FR) Article absorbant comprenant une membrane cellulosique d'une épaisseur d'environ 5 à 50 $(g)mm formée en coulant une pellicule à partir d'une solution d'un dérivé de cellulose dans une solution appropriée afin de réaliser un article qui encapsule un promoteur osmotique, plus particulièrement un chlorure de sodium, un sucre ou une autre composition adaptée, dont la masse molaire est préférablement inférieure à environ 500. Cet article peut contenir au moins 0,001 g/cm2/min d'eau et retenir celle-ci dans des conditions de pression externe d'au moins 0,689 kPa.
Designated States: AU, CA, JP, KR
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0504228CA2069487KR1019920703130AU1991068977