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Title:
COATED TRANSPARENT SUBSTRATE
Document Type and Number:
WIPO Patent Application WO/2017/154703
Kind Code:
A1
Abstract:
The problem to be solved by the invention is to provide a coated transparent substrate having both superior ultraviolet-ray absorptivity and durability. The present invention provides a coated transparent substrate comprising a transparent substrate and a coating provided on a surface of the transparent substrate, wherein the coating has an absorbance of 2.0 or greater with respect to light of a wavelength of 380 nm, and the time until a crack occurs in the surface of the coating after the start of a moisture resistance test that is conducted by leaving the coated transparent substrate at rest in 80°C and 95 RH% conditions is no less than 200 hours. Furthermore, no scratches are visually identifiable from a scratch resistance test conducted by pressing a ball point pen having a diameter of 1.0 mm against the surface of the coating with an applied load of 9.8 N and scratching 2 cm of the coating at a velocity of 10 cm/min; alternatively, the pencil hardness of the coating as defined in JIS K 5600-5-4 (1999) is 4H or greater.

Inventors:
YAMAZAKI MASAHIRO (JP)
KANEKO TAKUMA (JP)
Application Number:
JP2017/008150
Publication Date:
September 14, 2017
Filing Date:
March 01, 2017
Export Citation:
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Assignee:
ASAHI GLASS CO LTD (JP)
International Classes:
B32B7/02; B32B17/06; C03C17/25; C03C17/34
Domestic Patent References:
WO2010140688A12010-12-09
WO2015079897A12015-06-04
WO2012107968A12012-08-16
WO2006137454A12006-12-28
Attorney, Agent or Firm:
SAKURA PATENT OFFICE, p. c. (JP)
Patent business corporation cherry tree international patent firm (JP)
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