Transparent masterbatches for thermoplastics

A transparent masterbatch for improving the surface properties of thermoplastics, the transparent masterbatch comprising:

• from 40% to 90% by weight of at least one polymer selected from the group consisting of a polyester, a copolyester, copolyamide, a cyclic olefin copolymer (COC), a polymethyl methacrylate, a polyphenylene ether, a polyurethane, a polysiloxane, a polysilane, a polytetrafluoroethylene, a polyoxymethylene, a polyvinyl chloride, a vinyl chloride copolymer, a polystyrene, an acrylonitrile-butadiene-styrene copolymers (ABS polymers), and a styrene-acrylonitrile copolymers (SAN polymers),
• and from 10% to 60% by weight of polyhedral oligomeric silicon-oxygen cluster units in accordance with the formula
• [(ReXfSi2O2.5)0(RgXhSi2O2)p]
• wherein e, f, g =0-3;
• h =l −4;
• e+f =3;
• g+h =4;
• o+p ≧4;
• and o, p ≠0;
• R =a hydrogen atom, an alkyl, a cycloalkyl, an alkenyl, a cycloalkenyl, an alkynyl, a cycloalkynyl group, or polymer unit, each substituted or unsubstituted, or further functionalized polyhedral oligomeric silicon-oxygen cluster units attached via a polymer unit or a bridging unit,
• X =an oxy, a hydroxy, an alkoxy, a carboxy, a silyl, an alkylsilyl, an alkoxysilyl, a siloxy, an alkylsiloxy, an alkoxysiloxy, a silylalkyl, an alkoxysilylalkyl, an alkylsilylalkyl, a halogen, an epoxy, an ester, a fluoroalkyl, a isocyanate, a blocked isocyanate, an acrylate, a methacrylate, a nitrile, an amino, a phosphine or a polyether group or substituents of type R containing at least one such group of type X,
• the substituents of type R being identical or different, and the substituents of type X being identical or different.