Bayer Aktiengesellschaft

Bayer Materialscience Ag

Bayer Intellectual Property Gmbh

Covestro Deutschland Ag

Jürgen Meixner

Reinhard Halpaap

Thorsten Rische

Thomas Feller

Lutz Schmalstieg

Jan Mazanek

Sebastian Dörr

Tillmann Hassel

Detlef-Ingo Schütze

Christoph Thiebes

Heino Müller

Uwe Klippert

Torsten Pohl

Karin Naujoks

Olaf Fleck

Holger Casselmann

Eberhard König

Roland Komorek

Helmut Müller

Coating compositions that are stable to thermal yellowing that include coating materials containing I) one or more dispersions of hydroxyl-free polyurethanes and/or polyurethane-ureas, II) one or more aqueous solutions or dispersions of ionically modified, hydroxyl-containing polyurethanes and/or polyurethane-ureas, other than the constituents of component I), and III) at least one crosslinker. The dispersions are obtained by A) preparing an NCO-containing polyurethane prepolymer by reacting polyisocyanates with polymeric polyols and/or polyamines having number-average molecular weights of 400 to 8000 g/mol, isocyanate-reactive, ionically or potentially ionically hydrophilicizing compounds and/or isocyanate-reactive nonionically hydrophilicizing compounds; B) either dissolving the prepolymer obtained from step A) in aliphatic ketones or, diluting the prepolymer solution if the preparation has already been carried out in the presence of A6) by further addition of aliphatic ketones, and C) reacting the remaining free NCO groups of the prepolymer with a chain extender component.

Coating material composition

The present invention relates to a binder composition containing  The polyurethane dispersions are manufactured in the presence of components a) and b). It is possible for components a) and b), depending on the grade used, to be incorporated into the polymer framework as structural units. For this reason binder compositions comprising  The present invention also relates to a process for the preparation of these binder compositions. Further, the present invention relates to coating, adhesive and sizing compositions containing the binder compositions according to the invention. Finally, the present invention also relates to glass fibers sized with sizing compositions containing the binder compositions according to the invention.

Stabilized aqueous polyurethane-polyurea dispersions

Blocked polyisocyanates and one-component stoving systems containing these blocked polyisocyanates, and the preparation thereof and their use for the preparation of lacquers, paints, adhesives and elastomers. The blocked polyisocyanates are derived from polyisocyanates reacted with secondary amines and cationic, anionic and/or nonionic hydrophilizing agents such that they are incorporated into the polyisocyanate at a ratio of fromto, wherein the blocking agents correspond to the formula  

Blocked polyisocyanates

The present invention relates to a water vapor-permeable coating composite containing one or more flexible substrates, which are coated on one or both sides with one or more identical or different coating compositions, provided that at least one coating composition contains, as binder, a silica sol-modified aqueous polymer dispersion prepared from unsaturated monomers.

Water vapor-permeable coating composite

The present invention relates to aqueous silica sol-modified PU dispersions and their use as coating materials, in particular [lacuna] textiles and leather.

Mixtures of aqueous binders

Growing community of inventors

Krefeld, Germany

Jürgen Meixner