One pack low temperature cure coating compositions
AssigneeAllnex Netherlands B.V.
InventorsKuang-Jong Wu, John Colin Brogan, Lon-Tang Wilson Lin
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Abstract
This invention relates to coating compositions comprising at least one aminoplast crosslinker resin A, binder resins B that have active hydrogen functionality, and a catalyst composition C, wherein the catalyst composition C is a mixture of an organic sulfonic acid C1, and an amine C2 which may be primary, secondary, or tertiary, and which must have a pKa value of not more than 10, and preferably not less than 4, a process for the preparation thereof, and to a method of use thereof.
Claims12
A coating composition comprising at least one aminoplast crosslinker resin A, binder resins B, and a catalyst composition C,
- wherein the catalyst composition C is a mixture of an organic sulfonic acid C1, and an amine C2 selected from the group consisting of 4-chloroaniline, p-ethylaniline, 4-picoline, and N-ethyl aniline,
- wherein the binder resins B are hydroxy-functional polymers selected from the group consisting of alkyd resins, polyester resins, acrylic resins, acrylic-alkyd hybrids or acrylic-polyester hybrids, polyolefin polymers, and polyurethane polymers, wherein the polyurethane polymers are selected from the group consisting of polyether-polyurethanes, polyester-polyurethanes, polycarbonate-polyurethanes, and polyolefin-polyurethanes, and
- wherein the organic sulfonic acid C1 is an aromatic sulfonic acid having at least one sulfonic acid group, —SO3H, bound to an aromatic carbon atom.
Dependencies are inferred from the claim text.