Patent ID: 11866564
Assignee: TSUKISHIMA KIKAI CO., LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A polymer substrate with a hard coat layer in which a polymer substrate, a cured underlayer, and a silicon oxide layer are directly laminated in this order, wherein
the cured underlayer has a thickness of 1 to 20 μm, and comprises 10 to 90 parts by weight of a multi-functional acrylate and 90 to 10 parts by weight of inorganic oxide fine particles and/or a silicon compound hydrolysis-condensation product, or comprises a hydrolysis-condensation product of an organic silicon compound as a main component thereof,
the silicon oxide layer satisfies the following (a1) at a position 0.04 μm from the interface between the cured underlayer and the silicon oxide layer in the thickness direction and satisfies the following (a3) on a surface on a side opposite the interface:
(a1) when the chemical composition is represented by SiOxCyHz, x is in the range of 1.93 to 1.98, y is in the range of 0.04 to 0.15, and z is in the range of 0.10 to 0.50, and
(a3) when the chemical composition is represented by SiOxCyHz, x is in the range of 1.94 to 2.02, y is in the range of 0.05 to 0.16, and z is in the range of 0.20 to 0.50.