초록 ▼

The invention provides a liquid coating composition curable at ambient temperature comprising an acetoacetate groups-containing addition polymer having a number average molecular weight of 1000-100,000, a glass transition temperature of 250°-370°K., a hydroxyl number of 0-200 and a content of acetoa

The invention provides a liquid coating composition curable at ambient temperature comprising an acetoacetate groups-containing addition polymer having a number average molecular weight of 1000-100,000, a glass transition temperature of 250°-370°K., a hydroxyl number of 0-200 and a content of acetoacetate groups of 3,5-45% by weight, the acetoacetate groups being present as ester of hydroxyalkyl acrylate, hydroxyalkyl methacrylate or allyl alcohol structural units, and a polyamine having primary and/or secondary amino groups and blocked with an aldehyde or ketone. A process for coating a substrate with such composition is also provided.

대표청구항 ▼

A liquid coating composition based on a polyacetoacetate, a polyamine having primary and/or secondary amino groups and blocked with a ketone or an aldehyde having not more than 18 carbon atoms, the blocked polyamine and the polyacetoacetate being present in an amount such that the ratio of the numbe

A liquid coating composition based on a polyacetoacetate, a polyamine having primary and/or secondary amino groups and blocked with a ketone or an aldehyde having not more than 18 carbon atoms, the blocked polyamine and the polyacetoacetate being present in an amount such that the ratio of the number of equivalents of primary and secondary amino groups of the polyamine to the number of equivalents of acetoacetate of the polyacetoacetate is between ½and 2, characterized in that the polyacetoacetate is an acetoacetate groups-containing addition polymer having a large average molecular weight of 1000-100 000, a glass transition temperature of 250°-370°K., a hydroxyl number of 0-200, and a content of acetoacetate groups of 3,5-45% by weight, the acetoacetate groups being present as ester of hydroxyalkyl acrylate, hydroxyalkyl methacrylate or allyl alcohol structural units.