Cytec Surface Specialties Austria Gmbh

Allnex Austria Gmbh

Cytec Austria, Gmbh

Jörg Wango

Anton Arzt

Markus Schafheutle

Gerlinde Petritsch

Julius Burkl

Rudolf Jedlicka

Gudrun Garber

Renate Pittermann

Johann Billiani

Michael Gobec

Johannes Scherz

Robert Potzmann

Wolfgang Hyden

Hannelore Gsöll

Susanne Neumayer

The invention relates to an aqueous dispersion of a modified alkyd resin comprising water, an emulsifier S a copolymer P having moieties derived from one or more of esters M1 of an olefinically unsaturated carboxylic acid M11 having at least one olefinic unsaturation and at least one acid group per molecule, with a linear, branched or cyclic aliphatic hydroxy-functional compound M12 having at least one hydroxyl group per molecule, esters M2 of an olefinically unsaturated hydroxy functional compound M22 having at least one olefinic unsaturation and at least one hydroxyl group per molecule, with linear, branched or cyclic aliphatic carboxylic acid M21 having no olefinic unsaturation and at least one acid group per molecule, an olefinically unsaturated carboxylic acid M11 having at least one olefinic unsaturation and at least one acid group per molecule, an olefinically unsaturated hydroxy functional compound M22 having at least one olefinic unsaturation and at least one hydroxyl group per molecule, an olefinically unsaturated compound M3 that has at least one olefinic unsaturation, selected from the group consisting of olefinically unsaturated alkylaromatic compounds M31, olefinically unsaturated aliphatic ethers M32, olefinically unsaturated aliphatic ketones M33, olefinically unsaturated aliphatic halogenides M34, and olefinically unsaturated aliphatic pseudohalogenides M35, an alkyd resin A based on aliphatic linear or branched monocarboxylic acids A1 having from six to forty carbon atoms, aliphatic linear or branched or cyclic hydroxy-functional compounds A2 having at least two hydroxyl groups per molecule, aromatic or aliphatic linear, branched or cyclic acids A3 having at least two acid groups per molecule, wherein the alkyd resin A has an acid number of at least 3 mg/g, and wherein the ratio m(A)/m(P) of the mass m(A) of the alkyd resin A to the mass m(P) of the polymer P is at least 1 kg/0.5 kg, a method for their preparation, and a method of use thereof.

Modified water-borne alkyd resin

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

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Wundschuh, Austria

Jörg Wango