Härtbare uretdiongruppenhaltige Massen und ein Verfahren zu ihrer Herstellung und Verarbeitung sowie ihre Verwendung

摘要

The invention is used in the fields of chemistry and relates to hardenable materials which can be used for producing lacquers. The aim of the invention is to provide materials which harden at low temperatures in the same amount of time as the others. This is achieved by using hardenable materials containing uretdione groups and containing; (A) a binding agent constituent, whereby this component either (A1) does not contain carboxyl groups, or (A2) the concentration of carboxyl groups is less than that of the catalyst (C), or (A3), in the case of a high level of concentration, a quantity of a reactive agent is added. The hardenable materials also contain (B) a polyaddition compound which comprises uretdione groups, and (C) at least one Lewis acid catalyst. The aim of the invention is also achieved using a method for producing materials of this type in which the starting materials are homogenized in a solution and/or in a melt, the solution and/or melt is then rapidly cooled, and subsequent processing is carried out afterwards to effect a complete cross-linking.