Cytec Surface Specialties, S.a.

Miwon Austria Forschung Und Entwicklung Gmbh

Rami Awad

Thierry Randoux

Isabelle Fallais

Marc Heylen

Kris Verschueren

Paul-Lukas Awad

The invention relates to a water-dispersible polyurethane (meth)acrylate U substantially synthesised from at least one multifunctional aromatic or (cyclo)aliphatic isocyanate I, at least one (cyclo)aliphatic diol H2 having a number of carbon atoms of from two to twenty, at least one (cyclo)aliphatic triol H3 having a number of carbon atoms of from three to twenty, an aliphatic hydroxyacid A having at least two carbon atoms, at least one hydroxyl group, and at least one acid group which may be a carboxyl group, a sulfonic acid group, or a phosphoric or phosphonic acid group, and at least one component R having at least one isocyanate-reactive group and at least one radically polymerisable olefinically unsaturated group, at least one base B for at least partial neutralisation of the acid groups of component A, and a catalyst C for urethane formation which is a salt or a chelate complex of a metal of any of groups 3 to 15 of the Periodic System of the Elements, to a process for its preparation, and to the use thereof for coating substrates.

Water-dispersible polyurethane (meth)acrylates for actinic radiation curable coatings

The invention relates to a process for preparing a coated metal sheet coil comprising the coating of the metal sheet with a curable composition comprising an (meth)acrylated oligomer which is the reaction product of a carboxyl functionalized polybutadiene comprising x equivalents of &#x2014;COOH groups with (i) y equivalents of one or more (meth)acrylated monoepoxides or (ii) a mixture of z equivalents of one or more polyepoxides and at least (z&#x2212;x) equivalents of an &#x3b1;,&#x3b2;-unsaturated carboxylic acid; with z&#x3e;x and y&#x2267;x.

Process for applying a coating to a coiled metal sheet

The invention relates to a process for preparing a coated metal sheet coil comprising the coating of the metal sheet with a curable composition comprising an (meth)acrylated oligomer which is the reaction product of a carboxyl functionalized polybutadiene comprising x equivalents of &#x2014;COOH groups with (i) y equivalents of one or more (meth)acrylated monoepoxides or (ii) a mixture of z equivalents of one or more polyepoxides and at least (z-x) equivalents of an &#x3b1;,&#x3b2;-unsaturated carboxylic acid; with z&#x3e;x and y&#x2267;x.

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Graz, Austria

Rami Awad