Organosilicon nano/microhybrid or microhybrid system composition for scratch and abrasion resistant coatings

An organosilicon nano/microhybrid system or microhybrid system comprising one or more cores A and an organosilicon shell B,

• wherein the cores A comprise one or more oxide particles (KA—O) and an oxide particle mixture of (a) at least one nanoscale oxide and/or mixed oxide of at least one metal or semi-metal from main groups two to six or transition groups one to eight of the Periodic Table of the Elements, or of the lanthanides, and/or (b) a microscale corundum.
• and the organosilicon shell B comprises at least one organosilicon constituent of formula Ia
• wherein each R may be the same or different and each R may be a linear, branched or cyclic alkyl group of 1 to 50 carbon atoms, an alkenyl group of 2 to 6 carbon atoms, or a fluoroalkyl, chloroalkyl, isocyanoalkyl, cyanoalkyl, aryl, acylalkyl, acryloyloxyalkyl, methacryloyloxyalkyl, polysulfanealkyl, mercaptoalkyl, thiacyamidoalkyl, glycidyloxyalkyl, aminoalkyl, diaminoalkyl, triaminoalkyl, carbonatoalkyl or ureidoalkyl group, x is a number from 0 to 20, the remaining free valences of Si satisfied by SiO— and/or —Z, and the free valences of Si′ satisfied by SiO—, —R and/or —Z, wherein the groups Z may be the same or different and each may be a hydroxyl or alkoxy radical,
• and each Si and Si′ of the shell B carries not more than one group R,
• wherein the organosilicon constituent of the shell B is attached to the oxide particles (KA—O) through one or more covalent linkages of formula Ib
• wherein each R may be the same or different and R may be a linear, branched or cyclic alkyl group of 1 to 50 carbon atoms, an alkenyl group of 2 to 6 carbon atoms, or a fluoroalkyl, chloroalkyl, isocyanoalkyl, cyanoalkyl, aryl, acylalkyl, acryloyloxyalkyl, methacryloyloxyalkyl, polysulfanealkyl, mercaptoalkyl, thiacyamidoalkyl, glycidyloxyalkyl, aminoalkyl, diaminoalkyl, triaminoalkyl, carbonatoalkyl or ureidoalkyl group, x is a number from 0 to 20, the remaining free valences of Si satisfied by (KA—O)—, SiO— and/or —Z, and the free valences of Si′ satisfied by (KA—O)—, SiO—, —R and/or —Z, wherein each Z group may be identical or different and each may be a hydroxyl or alkoxy radical,
• and each Si and Si′ of the shell B carries not more than one group R.