PATCH MATERIAL

A patch material which includes a backing material having a water-vapor permeability of 3,000 g/m2·day or more and an adhesive layer having a water-vapor permeability of 5,000 g/m2·day or more, wherein the adhesive layer comprises a polyurethane adhesive obtained by reacting (i) an active hydrogen c...

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Bibliographische Detailangaben
Hauptverfasser:	KOIKE YOSHIKO, SAITO RYUJI, HARAGUCHI KAZUTOSHI, SATO EISAKU, IKAI TOMONORI
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES BANDAGES, DRESSINGS OR ABSORBENT PADS CHEMISTRY DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS DYES FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PAINTS POLISHES PROSTHESES TREATMENT OR PROTECTION OF EYES OR EARS USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:	A patch material which includes a backing material having a water-vapor permeability of 3,000 g/m2·day or more and an adhesive layer having a water-vapor permeability of 5,000 g/m2·day or more, wherein the adhesive layer comprises a polyurethane adhesive obtained by reacting (i) 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, (ii) an active hydrogen compound having a number-average molecular weight of 1,500 to 5,000 and an average number of functional groups of 1, and having a polyoxyalkylene structure, and (iii) an organic polyisocyanate, wherein an average number of functional groups of all active hydrogen compounds used for obtaining the adhesive is 2 to 2.6, and the content of ethylene oxide units of all active hydrogen compounds in the adhesive is 3 to 8% by weight.