Cytec Surface Specialties Austria Gmbh

Cytec Austria, Gmbh

Susanne Dellinger

Anton Arzt

Markus Schafheutle

Hannelore Gsoell

Gerlinde Petritsch

Hannelore Gsöll

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

This invention relates to a self-crosslinking binder for coating compositions comprising an aqueously dispersed resinous component A having at least one carbonyl group of the ketone or aldehyde type per molecule, and a component B having at least two hydrazine or hydrazide groups per molecule, and at least one structural unit &#x2014;NR&#x2014;NR&#x2014;CHR&#x2014;CHR&#x2014;NH&#x2014;R(I) where the radicals R, R, Rand Rare each individually selected from the group consisting of a hydrogen radical, and a linear or branched alkyl radical having from 1 to 10 carbon atoms, Rand Rmay additionally be selected from the group consisting of aryl and alkylaryl radicals having from 6 to 15 carbon atoms, and from oxy alkyl radicals with from 1 to 10 carbon atoms, where oxy groups may be inserted into the alkyl chain, or at the end of an alkyl chain, and Ris selected from the group consisting of a hydrogen radical, alkyl radicals which may be linear, branched or cyclic and may have from 1 to 10 carbon atoms, and residues of the formula &#x2014;(CH)&#x2014;CO&#x2014;O&#x2014;X, where n is an integer of from 1 to 6, and X is the residue of a polyhydric alcohol or phenol, and a process for its preparation.

Self-crosslinking binders

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Graz, Austria

Susanne Dellinger