Patent ID: 9617449
Date: 2017-04-11
CPC Classifications: C08G,C08J,C09D,Y10T

Claim:
1. A hard coating composition consisting essentially of an alicyclic epoxy group-containing siloxane resin, which has a weight average molecular weight in the range of 1000 to 4000 and a molecular weight distribution of PDI 1.05 to 1.4, and a reactive monomer which is an oxetane monomer capable of reacting with the alicyclic epoxy group to form crosslinking in an amount of 1 to 100 parts by weight, based on 100 parts by weight of the siloxane resin, wherein the siloxane resin is prepared, in the presence of water and a catalyst, by hydrolysis and condensation of (i) alkoxysilane containing an alicyclic epoxy group and an alkoxy group represented by the following Chemical Formula 1 alone, or (ii) alkoxysilane having an alicyclic epoxy group and an alkoxy group represented by the following Chemical Formula 1 and one or more selected from the group consisting of tetramethoxysilane, tetraethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, methyltripropoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, ethyltriethoxysilane, propyltrimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltripropoxysilane, N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyltrimethoxysilane, N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyltriethoxysilane, N-(3-acryloxy-2-hydroxypropyl)-3-aminopropyltripropoxysilane, 3-acryloxypropylmethylbis(trimethoxy)silane, 3-acryloxypropyltrimethoxysilane, 3-acryloxypropyltriethoxysilane, 3-acryloxypropyltripropoxysilane, 3-(meth)acryloxypropyltrimethoxysilane, 3-(meth)acryloxypropyltriethoxysilane, 3-(meth)acryloxypropyltripropoxysilane, N-(aminoethyl)-3-aminopropyltrimethoxysilane, N-(2-aminoethyl)-3-aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, chloropropyltrimethoxysilane, chloropropyltriethoxysilane, and heptadecafluorodecyltrimethoxysilane: wherein R