Solutia Austria Gmbh

Cytec Surface Specialties Austria Gmbh

Allnex Austria Gmbh

Vianova Resins Ag

Surface Specialties Austria Gmbh

Cytec Austria, Gmbh

Gerlinde Petritsch

Anton Arzt

Markus Schafheutle

Julius Burkl

Joerg Wango

Martina Glettler

Rudolf Jedlicka

Hannelore Gsoell

Ursula Meisner

Jörg Wango

Renate Pittermann

Birgit Anner

Gudrun Garber

Ulrike Kuttler

Markus A Schafheutle

Rami-Raimund Awad

Gerhard Reidlinger

Michael Gobec

Robert Harrer

Susanne Dellinger

Susanne Neumayer

Andreas Lerch

Hannelore Gsöll

The invention relates to an aqueously dispersible polyurethane having a specific amount of substance of hydroxyl groups, &#x2014;OH, of at least 0.6 mol/kg, and additionally satisfying at least two of the following conditions: a) a degree of branching measured as specific amount of substance of tertiary and/or quaternary aliphatic carbon atoms of from 0.01 mol/kg to 0.5 mol/kg, b) a specific amount of urea groups &#x3e;N&#x2014;CO&#x2014;N&#x3c; of from 0.8 mol/kg to 2 mol/kg, and c) a specific amount of substance of hydroxyl groups, &#x2014;OH, of from 1 mol/kg to 4 mol/kg, wherein in each case the specific amount of substance is based on the mass of the polyurethane, a process for the preparation thereof, and a method of use thereof.

Aqueously dispersible polyurethane

The invention relates to a polyurethane P comprising a moiety derived from a polyfunctional isocyanate F, and a hydroxyfunctional compound ABCE made from a grafted fatty acid AB which in turn is made from a fatty acid A having at least one olefinic unsaturation, and grafted with a mixture B of olefinically unsaturated monomers which mixture comprises at least one acid-functional olefinically unsaturated monomer B1, wherein the grafted fatty acid AB has on average at least 1.1 acid groups per molecule, at least one polyhydric alcohol C having at least two hydroxyl groups, and at least one fatty acid E, to a process of making this polyurethane, and to a method of use thereof in the form of an aqueous dispersion to formulate coating compositions.

Polyurethane dispersions, a process of making, and a method of use thereof

A two-pack coating composition comprising curing agents selected from the group consisting of non-blocked poly-functional isocyanates I, polyaziridines Z, and carbodiimides Y, and an aqueously dispersed polyurethane U wherein the polyurethane U comprises building blocks derived from hydroxyl group containing unsaturated fatty acids B21, a process for the production of the polyurethane U, and a method of use thereof in combination with the said curing agents in preparing coating compositions which are particularly useful for wood.

Oil based aqueous polyurethane dispersions

The invention relates to self-crosslinking aqueous polyurethane dispersions containing a crosslinking agent I selected from diamones I1 and dihydrazides I2, and polyurethanes comprising structural elements derived from polyisocyanates A, polyols B having a number average molar mass Mof at least 400 g/mol, compounds D comprising at least two groups which are reactive compared to isocyanate groups and at least one group able to form anions, low-molecular polyols E that carry no other reactive groups compared to isocyanate groups, compounds F containing at least one group which is reactive compared to isocyanate, and at least one aldehyde-type or ketone-type carbonyl group, and compounds G that are monofunctional compared to isocyanates or contain active hydrogen with different capabilities of reaction and are different from the compounds E. The invention also relates to methods for the production of said dispersions, and coating agents containing the same.

Self-crosslinking aqueous polyurethane dispersions

Water-dilutable polyurethane dispersions comprising structural units derived from polyisocyanates A, polyols B having a number-average molar mass Mof at least 400 g/mol, compounds D that contain at least two groups reactive towards isocyanate groups and at least one group capable of anion formation, low molar mass polyols E that do not carry any further groups reactive towards isocyanate groups, compounds G that are monofunctional towards isocyanates or contain active hydrogen of different reactivity and that are different from the compounds E, characterised in that the polyols B contain a mass fraction of polycarbonate polyols Bof at least 85%, and the use thereof in coating compositions

Water-dilutable polyurethane dispersions

Aqueous stoving enamels containing resins A which have hydroxyl groups and are made hydrophilic by partially neutralized acid groups, and highly etherified aminoplasts B, characterised in that the aqueous solutions or dispersions of the resin have a pH value of 6 or below, a method for the preparation thereof, and a method of use comprising coating thermally sensitive substrates.

Aqueous stoving enamels

A water-dispersible polyurethane resin comprising building blocks derived from polyisocyanates A, polyols B having a number-average molar mass Mof at least 400 g/mol, where appropriate, low molar mass polyols C with Mbelow 400 g/mol, compounds D which possess at least two groups which are reactive toward isocyanate groups and at least one group which is capable of forming anions, low molar mass polyols E which in relation to isocyanate groups carry no further reactive groups, compounds F, which are monofunctional toward isocyanates or contain active hydrogen of different reactivity and are different from the compounds E and also, where appropriate, compounds G, which are different from B, C, D, E and F and contain at least two groups which are reactive with NCO groups, wherein the number-average molar mass Mof the polyurethane resin is at least 10 kg/mol, its weight-average molar mass Mis at least 20 kg/mol, and its acid number is from 20 to 50 mg/g; a process for its preparation; and its use as a binder.

High molar mass polyurethane dispersions

Storage-stable polyurethane dispersions preparable by reacting polydienes A which carry at least two isocyanate-reactive groups, polyols B which carry at least one acid group, polyfunctional isocyanates C and chain extenders D, wherein the acid groups of the polyols B are neutralized to a fraction of from 60 to 95%, processes for preparing them, and their use for producing elastic coatings.

Aqueous polyurethane dispersions containing polybutadiene units

Water dilutable binder for soft feel coating materials, comprising an aqueous dispersion of a hydroxyl-containing polyester-urethane A, preparable by reacting a polyester A1 with hydroxyl groups as functional groups, formed from difunctional or polyfunctional carboxylic acids A11 and difunctional or polyfunctional alcohols A12, with a polyfunctional isocyanate A2, with a compound A3 having at least one isocyanate-reactive group and at least one acid group, an aqueous solution or dispersion of a triazine resin B, wherein the glass transition temperature of the polyester-urethane A is between &minus;70 and &minus;20&deg; C. and wherein the hydroxyl number of the polyester-urethane A is from 10 to 120 mg/g, a process for its preparation, and its use in soft feel coating materials for plastics, metals, glass, wood, textiles, and leather.

Water dilutable binders for soft feel coating materials

Oxidatively drying aqueous polyurethane dispersions obtainable by reacting drying and/or simidrying oils with low molar mass hydroxy compounds having two or more hydroxyl groups to give compounds containing on average at least one hydroxyl group and at least one radical of a fatty acid having at least one olefinic double bond, then reacting these compounds together with high molar mass polyols, compounds having at least two isocyanate-reactive groups and at least one acid or cation-forming group with polyfunctional isocyanates to give prepolymers having a mass fraction of unreacted isocyanate groups of from 0.1 to 4%, then neutralizing the product and transferring the utilized product to the aqueous phase, a process for preparing them and their use for coating wood.

Oxidatively drying polyurethane dispersions

Soft feel lacquers comprising water dilutable binders A which possess functional groups, selected from hydroxyl, amino and carboxyl groups, and of curing agents B which have functional groups capable of reacting with the functional groups of the components A, and forming chemical bonds as cross-linking sites, wherein at least one of the components A and B contains a sufficient quantity of aromatic constituent units to ensure that the mass fraction of the aromatic constituent units in relation to the solid matter in the combination of binder and curing agent is not less than 3%.

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Graz, Austria

Gerlinde Petritsch