Organic silicon nano-microhybrid system or micro-hybrid system containing compositions for scratch and abrasion resistant coatings

摘要

A nano-/micro- or micro-hybrid system comprises a core of oxide particles and a bonded organo-Si shell and is prepared by reaction in situ in a hardenable liquid synthetic resin or a precursor of such a resin. A nano-/micro- or micro-hybrid system comprises (A) a core of oxide particles (KA-O) comprising solely micro-scalar corundum or a mixture of (i) a nano-scalar (mixed) oxide of a (semi)-metal of main-Group 2-6 or sub-Group 1-8 or of a lanthanide and (ii) micro-scalar corundum and, bonded to this, (B) an organo-Si shell containing (i) an organo-Si component of formula (I) and/or a covalent compound of formula (II). (Si'O)xSi-R (I) (KA-O)((Si'O)xSi-R) (II) R = 1-50C optionally cyclic alkyl, 2-6C alkenyl or fluoroalkyl, chloroalkyl, isocyanoalkyl, cyanoalkyl, aryl, acylalkyl, acyloxyalkyl, (meth)acryloxy, polysulfanalkyl, mercaptoalkyl, thiacyamidoalkyl, glycidyloxyalkyl, aminoalkyl, di- or tri-aminoalkyl, carbonatoalkyl or ureidoalkyl; and x = 0-20. In (I), the free valencies of Si are satisfied by SiO and/or Z and those of (Si') by SiO, R and/or Z. In (II), the free valencies of Si are satisfied by (KA-O), SiO and/or Z and those of (Si') by (KA-O), SiO, R and/or Z. Where Z is OH or alkoxy and each Si or (Si') has a maximum of one R group. An Independent claim in which the systems are obtained by reaction in situ in a hardenable liquid synthetic resin or a precursor of such a resin.