Epoksi-vapaa, lämmössä kovettuva pinnoitejärjestelmä

摘要

An epoxide-free thermosetting coating system comprises: (i) a binder resin based on an OH-terminated polyester resin(s) (I) with an OH no. of 20-200 mg KOH/g and Tg of at least 40 degrees C; (ii) a polyisocyanate(s) (II) contg. COOH gps. with at least 2 reversibly blocked NCO gps./mol. and an acid no. of 20-150 mg KOH/g; (iii) beta -hydroxyalkyl-amide(s) (III) with at least 2 beta -hydroxyalkylamide gps./mol.; and (iv) opt. other additives depending on its use and processing. Also claimed is a method of producing the system.