Basf Se Corporation

Stahl International B.v.

Basf Schweiz Ag

Lars Heckhoff

Ines Pietsch

Karl-Heinz Schumacher

Ulrike Licht

Christoph Kiener

Peter Preishuber-Pfluegl

Stefan Adams

Meik Ranft

Reinhard Treiber

Thomas Frechen

Karl Häberle

Andrea Kuntz

Joerg-Alexander Dimmer

Peter Schuler

Heinrich Harrer

Helfried Scheidl

Richard Bociek

Jörg-Alexander Dimmer

Gerd BÜLOW

Reinhard KÖHLER

The use of an aqueous polyurethane dispersion adhesive is described for producing composite foils which are biodisintegratable at home compost conditions where at least two substrates are adhesive-bonded to one another with use of the polyurethane dispersion adhesive, where at least one of the substrates is a polymer foil which is biodisintegratable at home compost conditions. At least 60% by weight of the polyurethane is composed of diisocyanates, polyesterdiols, and at least one bifunctional carboxylic acid selected from dihydroxy 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 is biodegradable at home compost conditions.

Composite foils biodisintegratable at home compost conditions

Described is a process for producing adhesive-coated articles, wherein an aqueous dispersion adhesive composition comprising a dispersed adhesive polymer and a dissolved polyvinylpyrrolidone is applied at high web speed to a film substrate using a coating machine having at least one rotating roller and wherein the coated film substrate may optionally be bonded to a further substrate. Also described is the use of polyvinylpyrrolidone as a defoamer for aqueous dispersion adhesive compositions applied to a film substrate using a coating machine having a rapidly rotating roller.

Method for producing articles coated with adhesive

Method for coagulating an aqueous polymer dispersion, where the aqueous polymer dispersion comprises at least one polymer in dispersion in aqueous phase, and also comprises thermally expandable, thermoplastic microspheres, the polymer dispersion is coagulated by energy input, and the coagulated composition is delivered via an outlet aperture, preferably in the form of a nozzle.

Method for coagulating polymer dispersions using expandable microspheres

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Gorxheimertal, Germany

Lars Heckhoff