Importance

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Abstract

The present invention pertains to carbamate-melamine formaldehyde cross-linking agents of the formula 1 wherein X is selected from the group consisting of --COOR, --(CH.sub.2--O).sub.l---H, --(CH.sub.2--O).sub.l--R, --(CH.sub.2--O).sub.k--CH.sub.2--N(X)-Q, and --(CH.sub.2--O).sub.k--CH.sub.2--N(Y)-Q; Y is independently selected from the group consisting of --H, --(CH.sub.2--O).sub.l--H, --(CH.sub.2--O).sub.l--R, --(CH.sub.2--O).sub.k--CH.sub.2--N(X)-Q, and --(CH.sub.2--O).sub.k--CH.su-b.2--N(Y)-Q; with each k independently being 0-10, and each l independently being 1-10; each R being independently selected from the group consisting of alkyl, cycloalkyl, and alkylaryl groups; Q being 2 and wherein said agents comprise, on average, at least 0.05, but fewer than 2 carbamate groups per triazine moiety. The present invention further relates to the preparation of these types of cross-linking agents, to a curable coating composition comprising said cross-linking agents and at least one polyhydroxy group-containing polymer, and to the use of said curable coating composition.

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First Claim