WO1989005834A1 - A process for manufacturing a porous polyether urethane film - Google Patents

A process for manufacturing a porous polyether urethane film

Info

Publication number
WO1989005834A1
WO1989005834A1 PCT/NL1988/000061 NL8800061W WO8905834A1 WO 1989005834 A1 WO1989005834 A1 WO 1989005834A1 NL 8800061 W NL8800061 W NL 8800061W WO 8905834 A1 WO8905834 A1 WO 8905834A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
substrate
polyether urethane
manufacturing
urethane film
Prior art date
Application number
PCT/NL1988/000061
Other languages
French (fr)
Inventor
Albert Johan Pennings
Original Assignee
Stichting Biomat
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stichting Biomat filed Critical Stichting Biomat
Publication of WO1989005834A1 publication Critical patent/WO1989005834A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—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
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/26—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • C08J2375/08—Polyurethanes from polyethers

Abstract

This invention relates to a process for manufacturing a porous polyether urethane film that may or may not be cross-linked, which film is adapted for use as a wound dressing or as a part of a wound dressing. The process comprises spreading a solution of an aliphatic polyether urethane elastomer and a hygroscopic salt in an organic solvent over a substrate after a heat treatment, contacting said substrate together with the layer provided thereon with an atmosphere containing water vapour, removing the remaining organic solvent by drying after the clear layer has turned white, removing the hygroscopic salt by contacting the substrate and the white film provided thereon with water while separating the film from the substrate, and drying the film.
PCT/NL1988/000061 1987-12-23 1988-12-22 A process for manufacturing a porous polyether urethane film WO1989005834A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8703116A NL8703116A (en) 1987-12-23 1987-12-23 METHOD FOR MANUFACTURING A POROUS POLYETHERURETHANE FILM; WOUND COVERAGE MATERIAL.
NL8703116 1987-12-23

Publications (1)

Publication Number Publication Date
WO1989005834A1 true WO1989005834A1 (en) 1989-06-29

Family

ID=19851142

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1988/000061 WO1989005834A1 (en) 1987-12-23 1988-12-22 A process for manufacturing a porous polyether urethane film

Country Status (3)

Country Link
EP (1) EP0415928A1 (en)
NL (1) NL8703116A (en)
WO (1) WO1989005834A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4211266A1 (en) * 1992-04-03 1993-10-07 Fraunhofer Ges Forschung Polymer membranes or fibres with hydrophilic surfaces - obtd. by forming film or fibre from soln. of polar gp.-contg. polymer, treating with water vapour and removing solvent

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3000757A (en) * 1957-01-28 1961-09-19 Du Pont Process for coating substrates with a vapor permeable polymeric coating
US3743620A (en) * 1970-12-10 1973-07-03 Tenneco Chem Polyurethane solutions and methods for the production of uniformly microporous polyurethane sheet material therefrom
GB2093190A (en) * 1980-10-15 1982-08-25 Smith & Nephew Ass Blood Gas Sensor
EP0091800A1 (en) * 1982-04-08 1983-10-19 SMITH & NEPHEW plc Surgical adhesive dressing
US4523005A (en) * 1981-10-30 1985-06-11 Thermedics, Inc. Extrudable polyurethane for prosthetic devices prepared from a diisocyanate, a polytetramethylene ether polyol, and 1,4-butane diol

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3000757A (en) * 1957-01-28 1961-09-19 Du Pont Process for coating substrates with a vapor permeable polymeric coating
US3743620A (en) * 1970-12-10 1973-07-03 Tenneco Chem Polyurethane solutions and methods for the production of uniformly microporous polyurethane sheet material therefrom
GB2093190A (en) * 1980-10-15 1982-08-25 Smith & Nephew Ass Blood Gas Sensor
US4523005A (en) * 1981-10-30 1985-06-11 Thermedics, Inc. Extrudable polyurethane for prosthetic devices prepared from a diisocyanate, a polytetramethylene ether polyol, and 1,4-butane diol
EP0091800A1 (en) * 1982-04-08 1983-10-19 SMITH & NEPHEW plc Surgical adhesive dressing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Chemical Abstracts, vol. 74, no. 4, 25 January 1971 (Columbus, Ohio, US) see page 26 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4211266A1 (en) * 1992-04-03 1993-10-07 Fraunhofer Ges Forschung Polymer membranes or fibres with hydrophilic surfaces - obtd. by forming film or fibre from soln. of polar gp.-contg. polymer, treating with water vapour and removing solvent

Also Published As

Publication number Publication date
NL8703116A (en) 1989-07-17
EP0415928A1 (en) 1991-03-13

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