Bayer Aktiengesellschaft

Bayer Materialscience Ag

Covestro Deutschland Ag

Karin Naujoks

Thorsten Rische

Thomas Feller

Jan Mazanek

Harald Blum

Christoph Gürtler

Jan Weikard

Helmut Reiff

Christoph Irle

Oswald Wilmes

Hans-Ulrich Meier-Westhues

Raymond Audenaert

Hans Georg Grablowitz

Eberhard K&ouml;nig

Christoph G&uuml;rtler

Jürgen Meixner

Holger Casselmann

Juergen Meixner

Eberhard König

Erhard Lühmann

The present invention relates to aqueous non-ionically hydrophilised binding-agent dispersions based on polyurethane ureas with terminal polyethylene-oxide groups, to the preparation thereof, and to the use thereof for producing coatings.

Non-ionically hydrophilised binding-agent disperisions

The present invention relates to new hydrophilicized blocked polyisocyanates, a process for preparing them and their use.

Hydrophilicized blocked polyisocyanates

Novel sizing compositions, their preparation and use. The compositions contain water-dispersible and/or water-soluble and alkylamine-blocked polyisocyanates, film-forming resins, coupling agents and lubricants. The isocyanates are synthesized from at least one polyisocyanate, at least one ionic and/or potentially ionic and/or nonionic compound, and at least one blocking agent which is at least 20% by weight aralkylamines.

Sizing 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

Aqueous coating compositions based on polyurethane dispersions which cure under the influence of high-energy radiation, to a process for preparing them and to their use. The coating compositions contain a polyisocyanate, a polyurethane containing free-radically polymerizable groups, and an initiator which is capable of initiating a free-radical polymerization.

Radiation-curing coating compositions

The invention relates to polyurethane-polyurea dispersions, also called PU dispersion, which contain aralkylamine-blocked isocyanate groups, and to their preparation and use. This blocking agent ahs a significantly lower deblocking temperature as compared with the prior art. Coatings produced from this dispersion have high hydrolysis resistances. The arylamine-blocked isocyanate groups are composed of polyisocyanates, polymeric polyols having average molar weights of 400 to 6000, at least one blocking agent, and either or both of nonionically hydrophilicizing compounds or compounds having at least one ionic or potentially ionic group.

Polyurethane-polyurea dispersions

The invention relates to self-crosslinking polyurethane, polyurethane-polyurea or polyurea dispersions, a process for the preparation of such dispersions and the use thereof.

Self-crosslinking polyurethane, polyurethane polyurea or polyurea dispersions for sizing agents

The present invention relates to aqueous polyurethane dispersions having a resin solids content of 20 to 60 wt %, a viscosity at 23.degree. C. of 10 to 20,000 mPa.s and a pH of 5.5 to 8.5, wherein the polyurethane has a weight average molecular weight of 5,000 to 500,000 and a urethane group content (calculated as --NHCO--O--, molecular weight=59) of 2.5 to 15 wt %, and is based on a polyisocyanate component containing 50 to 100 wt % of 1-methyl-2,4- and/or -2,6-diisocyanatocyclohexane. The present invention also relates to aqueous binder compositions containing these aqueous polyurethane dispersions and known crosslinking resins and to the use of the aqueous polyurethane dispersions and aqueous binder compositions as binders for glass fiber sizings.

Growing community of inventors

Odenthal, Germany

Karin Naujoks