| 摘要 |
<p>New powder coatings or powder coating compositions comprising A) a binder system B) specific powder coating additives C) at least one compound of formula I <IMAGE> (I) in which R1 is methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl or tert-butyl and optionally D) additional compounds selected from the group consisting of antioxidants, UV-stabilizers, UV-absorbers, acid scavengers, radical scavengers, pigments, dyes, UV-quenchers, processing stabilizers, fillers, and tribocharging additives exibit advantages during their production. Compounds according to formula I can be used as UV-absorbers and can be incorporated even in greater amounts and dispersed homogeneously at the manufacture of the powder coating compositions in an extruder. It is a further advantage of these compounds that they do not volatilize during stoving of the coatings.</p> |
