Patent ID: 7700160
Filing Date: 2010-04-20
Classification: B05D,B82Y,C01P,C08K,C09C,C09D,Y10S,Y10T

Abstract:
1. A process for the production of a scratch-resistant vehicle coating comprising the following steps: I. applying a top coat layer of a colour- and/or special effect-imparting base coat and a transparent clear coat or of a pigmented one-layer top coat onto a prior coating, II. optionally, applying a sealing layer of a transparent sealing coat onto the top coat layer applied in step I and III. curing the top coat layer applied in step I and the sealing layer optionally, applied in step II, wherein the transparent clear coat or the pigmented one-layer top coat and/or the transparent sealing coat contains modified nanoparticles based on an element-oxygen network, the elements are selected from a group consisting of aluminium, silicon, tin, boron, germanium, gallium, lead and transition metals including the lanthanides and actinides and wherein the modified nanoparticles being produced by treating the (unmodified) nanoparticles with compounds of the general formula I Me(OR 1 ) 4 and/or the general formula II Me(OCOR 1 ) 4 wherein R 1 is an alkyl, aryl and/or aralkyl residue and Me is zirconium and/or titanium, and wherein said modified nanoparticles are jointly predispersed and ground together with functional compounds functionalized with hydroxy, carboxy, or a combination thereof, said functional compounds being functional oligomeric compounds, functional polymeric compounds, or combination thereof wherein said functional monomeric compounds, said functional oligomeric compounds, and said functional polymeric compounds are functionalized with hydroxy, carboxy, or a combination thereof.