Bayer Aktiengesellschaft

Jochen Wulff

Wilhelm Thoma

Bernd Quiring

Manfred Dollhausen

Georg Niederdellmann

Horst Muller-Albrecht

This application relates to textile sheets which have been coated with polyurethanes and to a process for coating said textile sheets wherein a solution of polyurethane is applied as a top coat to a release substrate and then a bonding coat is applied before application of the textile material. The polyurethane which is used as a top coat is prepared by reacting a dihydroxyl compound with a molecular weight between about 600 and 4000 and a mixture of at least 2 diols with a molecular weight between 62 and 450 with at least one organic diisocyanate. The invention overcomes the difficulty of the top coat being lifted from the release substrate in numerous areas while other areas remain firmly attached giving the so-called 'hoar-frost' effect.

Textile coating with polyurethanes

The instant invention relates to compositions comprising certain copolymers and/or graft polymers of styrene or .alpha.-methyl styrene in combination with certain polyurethanes useful as adhesives.

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Munich, Georgia

Jochen Wulff