Patent ID: 9605123
Date: 2017-03-28
CPC Classifications: B05D,B32B,C08J,C23C,Y10T

Claim:
1. A process for producing a resin substrate having a hard coating layer on at least one side of a resin substrate, comprising, in the following order: (1) applying a hard coating composition comprising an organopolysiloxane to at least one side of the resin substrate to form a coating film of the composition, and then applying a first heat treatment to the coating film to cure the organopolysiloxane, thereby forming a cured film, wherein said organopolysiloxane is present in an amount of 50 to 100 mass %, based on the total amount of the hard coating composition, excluding any solvent, and wherein in a interior of the cured film, a three dimensional crosslinking structure is formed by siloxane bonds, and on a surface of the cured film, structures of a monovalent organic group in which an alkyl group having 1 to 10 carbon atoms is bonded to a silicon atom, are present; (2) irradiating the cured film having the three dimensional crosslinking structure with a Xe (3) applying an oxidation treatment to the cured film obtained by (2) wherein the silicon radicals on the surface of the cured film are oxidized to be in a state where a hydroxyl group is bonded to a silicon atom, thereby forming —SiOH moieties, and then further applying a second heat treatment to form the hard coating layer, wherein the —SiOH moieties are reacted to form siloxane bonds, wherein the hard coating layer has a hardness gradient in the depth direction of the hard coating layer such that the hard coating layer has a Martens hardness in a depth up to 150 nm from the surface of from 200 to 850 N/mm