초록 ▼

The invention relates to coating compositions comprising: A) at least one low molecular weight reactive compound with a molecular weight (Mn) of 300-1,500 g/mol, preferably of 300-1,200 g/mol, with at least one secondary and/or tertiary amino group and at least two hydroxyl groups per molecule, whic

The invention relates to coating compositions comprising: A) at least one low molecular weight reactive compound with a molecular weight (Mn) of 300-1,500 g/mol, preferably of 300-1,200 g/mol, with at least one secondary and/or tertiary amino group and at least two hydroxyl groups per molecule, which compound is obtained by reacting A1) at least one hydroxyalkyl ester of an olefinically unsaturated carboxylic acid with 2-12 C atoms in the hydroxyalkyl residue with A2) at least one lactone and with A3) at least one hydroxy-functional alkyl-, cycloalkyl-and/or alkoxyamine with at least one primary and/or secondary amino group per molecule and with 2-10 C atoms per molecule, B) at least one cross-linking agent with functional groups reactive towards active hydrogen and optionally, C) at least one binder with functional groups containing active hydrogen.

대표청구항 ▼

We claim: 1. A coating composition comprising: A) at least one low molecular weight reactive compound with a molecular weight (Mn) of 300-1,500 g/mol with at least one group selected from the group consisting of secondary amino group, tertiary amino group and a mixture thereof and at least two hydr

We claim: 1. A coating composition comprising: A) at least one low molecular weight reactive compound with a molecular weight (Mn) of 300-1,500 g/mol with at least one group selected from the group consisting of secondary amino group, tertiary amino group and a mixture thereof and at least two hydroxyl groups per molecule, which compound is obtained by reacting A1) at least one hydroxyalkyl ester of an olefinically unsaturated carboxylic acid with 2-12 C atoms in the hydroxyalkyl residue with A2) at least one lactone and with A3) at least one hydroxy-functional amine having 2-10 carbon atoms per molecule and where the amino group is selected from the group consisting of primary amines, secondary amines and mixtures thereof and the hydroxy-functional amine is selected from the group consisting of hydroxy functional alkyl amines, hydroxy-functional cyclo alkylamines, hydroxy-functional alkoxyamines and any mixtures thereof; B) at least one cross-linking agent with functional groups reactive towards active hydrogen and optionally, C) at least one binder with functional groups containing active hydrogen. 2. A coating composition according to claim 1, containing 60-90 wt-% of component A) and 10-40 wt-% of component C), wherein the weight percentages relate to solids content and the proportions of component A) and component C) add up to 100 wt-%. 3. A coating composition according to claim 1, containing component C selected from the group consisting of hydroxy-functional poly(meth)acrylates, polyesters, polyurethanes and any mixture thereof. 4. A coating composition according to claim 3 wherein component C comprises hydroxy-functional poly(meth)acrylates. 5. A coating composition according to claim 1, wherein component B comprise polyisocyanates with free isocyanate groups. 6. A coating composition according to claim 1, containing compounds selected from the group consisting of pigments, extenders and mixtures thereof. 7. A coating composition according to claim 1, wherein component A1 comprise hydroxyalkyl esters of (meth)acrylic acid. 8. A coating composition according to claim 1, wherein component A2 comprise epsilon-caprolactone. 9. A coating composition according to claim 1, wherein component A3 comprises hydroxyalkylmonoamines with a primary amino group and one or two hydroxyl groups. 10. A coating composition according to claim 1, wherein the amino groups of component A) are partially or completely neutralized with hydroxycarboxylic acids. 11. A process for the multilayer coating of a substrate to form a multilayer structure thereon comprising applying a coating composition according to claim 1 to form at least one layer of the multilayer structure. 12. A process according to claim 11, wherein the substrate comprises vehicles or vehicle parts.