PATCH MATERIAL

It is an objective to provide a patch material having both excellent adhesive property and moisture permeability. The present invention is related to a patch material which comprises a backing material having a water-vapor permeability of 3,000 g/m 2 ·day or more and an adhesive layer having a water...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SATO, EISAKU, IKAI, TOMONORI, SAITO, RYUJI, HARAGUCHI, KAZUTOSHI, KOIKE, YOSHIKO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMISTRY COMPOSITIONS BASED THEREON DISINFECTION, STERILISATION, OR DEODORISATION OF AIR DYES HUMAN NECESSITIES HYGIENE MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METALLURGY METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:	It is an objective to provide a patch material having both excellent adhesive property and moisture permeability. The present invention is related to a patch material which comprises a backing material having a water-vapor permeability of 3,000 g/m 2 ·day or more and an adhesive layer having a water-vapor permeability of 5,000 g/m 2 ·day or more, wherein the adhesive layer comprises a polyurethane adhesive obtained by reacting (1) an active hydrogen compound having a number-average molecular weight of 5,000 or more and an average number of functional groups of 2 or more, and having a polyoxyalkylene structure, (2) an active hydrogen compound having a number-average molecular weight of 1,500-5,000 and an average number of functional groups of 1, and having polyoxyalkylene structure, and (3) an organic polyisocyanate, wherein an average number of functional groups of all active hydrogen compounds used for obtaining the adhesive is 2-2.6, and the content of ethylene oxide units of all active hydrogen compounds in the adhesive is 3-8% by weight.