Allnex Netherlands B.v.

Allnex IP S.a.r.l.

Allnex USA Inc.

Colin Brogan

Ram Baboo Gupta

Lawrence A Flood

Urvee Y Treasurer

Barry A Lawless

Zachary Wilde

Sarah Quinn

Urvee Treasurer

Barry Lawless

The present invention relates to reaction products H of at least one cyclic urea U, at least one multifunctional aldehyde A and at least one polyol P, process for preparing thereof and compositions comprising thereof.

Formaldehyde free crosslinking compositions

The invention relates to a coating composition comprising a reaction product UA of at least one multifunctional aldehyde A with at least one cyclic urea U, and a crosslinkable resin having at least one kind of functional groups selected from the group consisting of hydroxyl functional groups, acid functional groups, amide functional groups, amino functional groups, imino functional groups, mercaptan functional groups, phosphine functional groups, and carbamate functional groups, characterised in that the degree of etherification, measured as the ratio &#xab;(13 O&#x2014;R)/&#xab;(U) of the amount of substance n(&#x2014;O&#x2014;R) of alkoxy groups as substituents of the aldehyde carbon atoms of the multifunctional aldehyde chemically bound in the reaction product UA to the amount of substance &#xab;(U) of cyclic urea U chemically bound in the reaction products, is less than 0.01 mol/mol, and to a process for the preparation of the reaction product UA.

Non-etherified reaction product of a cyclic urea and a multifunctional aldehyde

The invention relates to a coating composition comprising a reaction product UA of at least one multifunctional aldehyde A with at least one cyclic urea U, and a crosslinkable resin having at least one kind of functional groups selected from the group consisting of hydroxyl functional groups, acid functional groups, amide functional groups, amino functional groups, imino functional groups, mercaptan functional groups, phosphine functional groups, and carbamate functional groups, characterized in that the degree of etherification, measured as the ratio &#x3c;&#x3c;(&#x2014;O&#x2014;R)/&#x3c;&#x3c;(U) of the amount of substance n(-O&#x2014;R) of alkoxy groups as substituents of the aldehyde carbon atoms of the multifunctional aldehyde chemically bound in the reaction product UA to the amount of substance &#x3c;&#x3c;(U) of cyclic urea U chemically bound in the reaction products, is less than 0.01 mol/mol, and to a process for the preparation of the reaction product UA.

The invention relates to a reaction product UA of at least one cyclic urea U and at least one multifunctional aldehyde A which reaction product has as substituents on the carbonyl carbon atoms of the aldehyde A at least one kind of functional groups selected from the group consisting of hydroxyl groups &#x2014;OH and alkoxy groups &#x2014;OR characterised in that the groups &#x2014;OR comprise at least two kinds of alkoxy groups &#x2014;ORand &#x2014;OR, where Rand Rare both selected from the group consisting of linear, branched or cyclic alkyl groups having from one to twelve carbon atoms, where Rand Rmay be the same or may be different from each other, to a process of making these, and to a method of use as crosslinker in coating compositions.

Reaction product of a cyclic urea and a multifunctional aldehyde

The invention relates to a crosslinker composition comprising a reaction product of a cyclic urea U and a multifunctional aliphatic aldehyde A, and at least one crosslinker selected from the group consisting of reaction products of an aminotriazine and at least one aldehyde selected from the group consisting of aliphatic monoaldehydes and multifunctional aliphatic aldehydes having the structure Y(CHO), where Y is an n-functional aliphatic residue, and n is greater than 1; reaction products of urea and/or cyclic ureas and formaldehyde; alkoxycarbonyl-aminotriazines; multifunctional isocyanates which may be partially or completely blocked; reaction products of phenols and aliphatic monoaldehydes; multifunctional epoxides; multifunctional aziridines; and multifunctional carbodiimides, wherein any of the crosslinkers which have hydroxyl groups may be etherified with one or more linear, branched, or cyclic aliphatic alcohols.

Mixtures of crosslinking agents

This invention relates to a process to make a reaction product UA of at least one multifunctional aldehyde A with at least one cyclic urea U, by mixing the at least one multifunctional aldehyde A with the at least one cyclic urea U in the presence of at least one alcohol R&#x2014;OH, and optionally, at least one solvent that has no reactive groups which may react with aldehyde groups, &#x2014;CO&#x2014;NH&#x2014; groups, or hydroxyl groups, to effect an addition reaction to obtain a solution of a product UA, where Ris selected from the group consisting of linear, branched or cyclic alkyl groups having from one to twelve carbon atoms, to the reaction product obtained by this process, and to a method of use thereof as crosslinker for coating compositions.

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Stamford, CT, United States of America

Colin Brogan