Stickstoffdotierter Kohlenstoff beschichtete Effektpigmente

摘要

The invention relates to a process for coating a surface through graft polymerization, characterized in that before graft polymerization, the surface is modified, in the presence of an amine of formula:wherein R1 is hydrogen or a group R4, R2 and R3 are each independently a group R4, and R4 is [-1,2-C2-C3alkylen-T-]n-H wherein T is O or NH and n is a number from 1 to 3, by a compound having a functional group:wherein R5 to R7 are each C1-C4alkyl. The amount of amine is preferably from 5 to 500 g/m<2 >of surface of the substrate particle. The amount of the trialkoxysilane compound is preferably from 0.1 to 2 g/m<2 >of surface of the substrate particle. The process for coating a surface is particularly useful for effect pigments.