Covestro Deutschland Ag

Bayer Materialscience Ag

Covestro LLC

Bayer Intellectual Property Gmbh

Covestro Intellectual Property Gmbh & Co. Kg

Hans Georg Grablowitz

Thomas Feller

Thomas Michaelis

Sebastian Dörr

Thorsten Rische

Holger Casselmann

Alfred Zastrow

Michael K Jeffries

Lyubov K Gindin

Joachim Ritter

Stephan Schubert

Karin Naujoks

Makoto Nakao

Jürgen Meixner

Olaf Fleck

Sophie Viala

Christian Hahn

Philip Jones

Juergen Meixner

Hans-Peter Klee

Derick Henderson

Reiner Witkowski

Tina Kasardo

Sven Gestermann

Holger Breuer

Ingo Gipperich

Alexander Pross

Stephanie Goldfein

Ronald Konitsney

Martin Kreuter

Petra Janßen

Juergen Urban

Eva Urban, Legal Representative

Anne Urban, Legal Representative

Christian Joachim Hahn

Wei Zhuang

Evgeny Avtomonov

The present invention relates to a process for removing ketazine from polyurethane dispersions by means of distillation below the boiling point of ketazine.

Distillative separation of ketazine from polyurethane dispersions

The present invention provides an aqueous polyurethane dispersion (PUD) comprising an amorphous polyester having a glass transition temperature (T) as determined by differential scanning calorimetry of less than &#x2212;30&#xb0; C.; wherein the aqueous polyurethane dispersion (PUD) has a glass transition temperature (T) as determined by differential scanning calorimetry (DSC) of 0&#xb0; C. to 20&#xb0; C. and a hard block content of greater than 50%. Coatings, adhesives, sealants, paints, primers and topcoats, made from the inventive aqueous polyurethane dispersion (PUD) pass detergent resistance testing according to the American Architectural Manufacturers Association's standard, AAMA 615-13, have a pencil hardness according to ASTM D3363 of at least 3H, and are particularly suited for use on low surface energy substrates such as vinyl and other surfaces including floors, windows, doors, window frames, door frames, window shutters, railing, gates, pillars, arbors, pergolas, trellises, gazebos, posts, fencing, pipes and fittings, wire and cable insulation, automobile components, credit cards, and siding.

One component polyurethane dispersion for vinyl windows and other substrates

The present invention relates to aqueous polyurethane dispersions comprising pentamethylene diisocyanate and to coatings obtainable therefrom. Said coatings, given a high density of urethane and urea groups, are softer than coatings that are obtained with polyurethane dispersions comprising other aliphatic diisocyanates, for example hexamethylene diisocyanate.

Polyurethane dispersions of low hardness

The application relates to a process for continuously producing aqueous polyurethane dispersions, which is characterized by the use of micro structured mixing elements and addition of water twice during the dispersion step. The energy input in the mixing of the dispersion is low. In addition, the application describes an apparatus suitable for execution of the aforementioned process.

Process and apparatus for continuous production of aqueous polyurethane dispersions

The present invention relates to novel aqueous polyurethane dispersions produced using at least two poly(tetramethylene glycol) polyether polyols with different average molar masses and at least two different polyisocyanate components.

Poly(THF)-based polyurethane dispersions

The present invention relates to an aqueous polyurethaneurea dispersion, wherein the polyurethaneurea has specific formation components, and which is characterized in that it has a content of &#x2014;COOH groups of at least 0.75% by weight, where 0% to 35% of these groups have been neutralized, and in that 5 to 50 mol % of isocyanate groups present have been reacted with a monofunctional component. The invention further relates to the use of this dispersion as coating composition, to a fiber having a cured coating and to a composite material.

Aqueous polyurethaneurea dispersion containing free acid groups

An aqueous polyurethane dispersion comprises a polyurethane polymer obtainable by the reaction of an isocyanate-functional polyurethane prepolymer A) with an isocyanate-reactive component B), wherein the isocyanate-functional prepolymer A) is obtainable by the reaction of a mixture comprising: a polyol component comprising a polyester polyol obtainable by the reaction of a mixture comprising an aliphatic dicarboxylic acid and at least one diol selected from the group consisting of linear aliphatic diols and a branched aliphatic diols; and a polyisocyanate component comprising &#x2267;50 weight-%, based on the total weight of polyisocyanates, of dicyclohexylmethane diisocyanate. The isocyanate-reactive component B) comprises a compound comprising sulfonate groups which is employed in an amount of &#x2267;3.5 weight-% to &#x2266;10 weight-%, based on the total weight of the polyol component, the polyisocyanate component and the isocyanate-reactive component B). The invention also concerns the use of such an aqueous polyurethane dispersion for coatings, a method of manufacturing a coated substrate and to a coated substrate.

Aqueous polyurethane dispersion for waterproof breathable coatings

The present invention relates to aqueous polyurethane urea dispersions having integral functional groups and coating agents produced therefrom, to a method for the production thereof, and to the use thereof for producing coating agents.

Functionalized polyurethane polyurea dispersions

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 invention relates to a method for coating sheet-form textile materials, in which there is applied to a sheet-form textile material an aqueous dispersion containing anionically modified polyurethane ureas comprising (A) aromatic diisocyanate, (B) polyether polyol having a mean molecular weight greater than 1500, (C) at least one compound containing from 1 to 2 isocyanate-reactive groups and at least one ionogenic group, (D) polyamine having a mean molecular weight of at least 32, and (E) water, wherein the mean total functionality of the isocyanate-reactive compounds B to D is from 1.85 to 2.2, the molar ratio of the isocyanate groups of component A to the isocyanate-reactive groups of components B to D is greater than 1, and the polyurethane ureas have a content of from 800 to 1500 mmol of urethane groups/kg of anionically modified polyurethane urea and a content of from 800 to 1800 mmol of urethane plus urea groups/kg of anionically modified polyurethane urea.

Aqueous dispersion of anionically modified polyurethane ureas for coating a sheet-form textile material

Growing community of inventors

Cologne, Germany

Hans Georg Grablowitz