ADHESIVE LABELS COMPRISING BIODEGRADABLE AQUEOUS POLYURETHANE PRESSURE-SENSITIVE ADHESIVE

An adhesive label is described comprising a backing material, a pressure-sensitive adhesive layer attached to the backing material and either a release liner attached to the adhesive layer or a release coating on the other side of the backing material. The backing material is made of paper or home c...

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Bibliographische Detailangaben
Hauptverfasser:	SLOAN, Jeremy Jon, ACHATZ, Paul, TORRES LLOSA, Jose Maria, LICHT, Ulrike
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES ADVERTISING CHEMISTRY COMPOSITIONS BASED THEREON CRYPTOGRAPHY DISPLAY DISPLAYING DYES EDUCATION LABELS OR NAME-PLATES MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PHYSICS POLISHES SEALS SIGNS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:	An adhesive label is described comprising a backing material, a pressure-sensitive adhesive layer attached to the backing material and either a release liner attached to the adhesive layer or a release coating on the other side of the backing material. The backing material is made of paper or home compostable and biodegradable polymer film, and the pressure-sensitive adhesive layer is made from an aqueous polyurethane dispersion pressure-sensitive adhesive. At least 60% by weight of the polyurethane is composed of diisocyanates, polyesterdiols, and at least one bifunctional carboxylic acid selected from di hydroxy carboxylic acids and diamino carboxylic acids, wherein the polyurethane has no melting point above 20° C. or wherein the polyurethane has a melting point above 20° C. with an enthalpy of fusion lower than 10 J/g, and wherein a film of the polyurethane adhesive preferably decomposes at home compost conditions to more than 90% by weight into CO2 and water within 360 days.