Patent ID: 8282863

Claim:
A microstructured film having a microstructured surface, wherein the microstructures comprise the reaction product of a polymerizable resin composition comprising an organic component and at least 10 wt. % of inorganic nanoparticles surface modified with a surface treatment comprising a compound comprising a carboxylic acid end group and a C 3 -C 8 ester repeat unit having the general formula: wherein n averages from 1.1 to 6; L1 is a C 1 -C 8 alkyl, arylalkyl, or aryl group, optionally substituted with one or more oxygen atoms or an ester group; L2 is a C 3 -C 8 alkyl, arylalkyl, or aryl group, optionally substituted with one or more oxygen atoms; Y is and Z is an end group comprising a C 2 -C 8 alkyl, ether, ester, alkoxy, (meth)acrylate, or combination thereof.