초록 ▼

The invention relates to a self-cross-linking, thermosetting, aqueous lacquer coating material, which comprises synthetic resins having a mean molecular weight (Mn) of about 500 to 15,000 and containing primary and/or secondary－and if appropriate also tertiary－amino groups as well as terminal esteri

The invention relates to a self-cross-linking, thermosetting, aqueous lacquer coating material, which comprises synthetic resins having a mean molecular weight (Mn) of about 500 to 15,000 and containing primary and/or secondary－and if appropriate also tertiary－amino groups as well as terminal esterified carboxyl groups, having an amine number of about 20 to 180 and an ester number of about 20 to 350, and which becomes dilutable with water through protonization with acids. The invention moreover concerns the utilization of this lacquer coating material for the purposes of cathodic deposition upon electrically conducting surfaces.

대표청구항 ▼

A self-cross linking binding agent rendered water-dilutable by protonization with acids for a self-cross-linking, thermosetting aqueous lacquer coating medium, comprising (a) a synthetic resin with a mean molecular weight (Mn) of about 500 to 15,000 containing amino groups as well as carboxyl groups

A self-cross linking binding agent rendered water-dilutable by protonization with acids for a self-cross-linking, thermosetting aqueous lacquer coating medium, comprising (a) a synthetic resin with a mean molecular weight (Mn) of about 500 to 15,000 containing amino groups as well as carboxyl groups some of which are esterified with mono-alcohols containing from 1 to 6 carbon atoms, (b) said resin having an amine number of about 20 to 180 and an ester number of between 20 and 350, (c) the ester group being substantially stable in a neutral aqueous medium, (d) said ester groups being reactive with the primary and/or secondary amino groups of the synthetic resin in a basic medium at temperatures above about 140°C.