Patent ID: 8268907

Claim:
An abrasion resistant photocurable coating composition comprising: 15 to 30 parts by weight of at least one monomeric compound A having from 5 to 7 acrylate groups; 7 to 20 parts by weight of at least one monomeric or oligomeric compound A′ selected from monomers or oligomers having from 3 to 4 acrylate groups; 10 to 25 parts by weight of at least one monomeric or oligomeric compound A″ having two acrylate groups; 2 to 10 parts by weight of at least one compound B having at least two epoxy groups and that does not comprise any silicon atom bearing hydrolysable groups or hydroxyl groups; 1 to 7 parts by weight of a compound C which is a hydrolyzate of an epoxysilane having from 2 to 6 functional groups generating a silanol group under hydrolysis; 20 to 60 parts by weight of at least one non polymerisable ether compound D; an effective amount of a cationic polymerization photo initiator; and an effective amount of a radical polymerization initiator.