Covestro Deutschland Ag

Futurecarbon Gmbh

Covestro Intellectual Property Gmbh & Co. Kg

Gesa Behnken

Dirk Achten

Christoph Eggert

Andreas Hecking

Hans-Josef Laas

Hartmut Nefzger

Jan Weikard

Nusret Yuva

Stefanie Eiden

Gernot Jaeger

Gernot Jäger

Florian Golling

Swantje Behnken

Daniel Rudhardt

Natalie Bittner

Lukas Reisky

Saskia Beuck

Robert Reyer

Thomas Buesgen

Diana Dimowa Landen

Uwe Werner

Achim Meyer

Thomas BÜSGEN

The present invention relates to new urethanases for the enzymatic breakdown of polyurethanes and to an enzymatic process for the complete breakdown of polyurethanes into defined monomers.

Urethanases for the enzymatic degradation of polyurethanes

The invention relates to modified polyisocyanates, obtained by reacting at least one polyisocyanate (A) based on 1,5-diisocyanatopentane with at least one silane compound (B) which is reactive with respect to isocyanate groups. The invention also relates to a method for producing the modified polyisocyanates and to the use thereof as starting components in the production of polyurethane plastics, in particular as crosslinker components in polyurethane paints and coatings.

Silane groups containing polyisocyanates based on 1,5-diisocyanatopentane

The invention relates to a polyisocyanate mixture containing at least one polyisocyanate based on 1,5-diisocyanatopentane and at least one organic solvent, said organic solvent being inert with respect to isocyanate groups and the polyisocyanate mixture has a solid body content of &#x2265;35 and &#x2264;65 wt. %. The invention also relates to a two-component system, to a method for producing a coating, to the thus obtained coatings and to a composite consisting of the coating and a substrate.

Polyisocyanate mixture based on 1,5-diisocyanatopentane

A preferably aqueous dispersion comprises carbon nanotubes and graphene platelets, with the ratio by mass of carbon nanotubes to graphene platelets being situated within a range from &#x2267;5:95 to &#x2266;75:25. In a process for preparing a dispersion of this kind, carbon nanotubes and graphene platelets are combined so that the ratio by mass of carbon nanotubes to graphene platelets in the dispersion is in a range from &#x2267;5:95 to &#x2266;75:25. The dispersion can be used as a printing ink for producing electrically conductive films. The invention further provides an electrically conductive film comprising carbon nanotubes and graphene platelets, with the ratio by mass of carbon nanotubes to graphene platelets being situated within a range from &#x2267;5:95 to &#x2266;75:25.

Dispersion comprising carbon nanotubes and graphene platelets

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Cologne, Germany

Gesa Behnken