US 12,434,998 B2
Resin-coated ultra-thin glass
Keizo Udagawa, Otsu (JP); Tatsuya Ohashi, Otsu (JP); and Yoshihiko Inoue, Otsu (JP)
Assigned to TORAY INDUSTRIES, INC., Tokyo (JP)
Appl. No. 18/266,931
Filed by TORAY INDUSTRIES, INC., Tokyo (JP)
PCT Filed Dec. 16, 2021, PCT No. PCT/JP2021/046480
§ 371(c)(1), (2) Date Jun. 13, 2023,
PCT Pub. No. WO2022/163191, PCT Pub. Date Aug. 4, 2022.
Claims priority of application No. 2021-012743 (JP), filed on Jan. 29, 2021.
Prior Publication US 2023/0365458 A1, Nov. 16, 2023
Int. Cl. C03C 17/30 (2006.01); C03C 17/32 (2006.01); C03C 17/34 (2006.01); C09D 183/04 (2006.01); H04M 1/02 (2006.01)
CPC C03C 17/3405 (2013.01) [C03C 17/30 (2013.01); C03C 17/32 (2013.01); C09D 183/04 (2013.01); H04M 1/0268 (2013.01)] 9 Claims
 
1. A resin coated ultra-thin glass sheet of a three layer structure comprising:
an ultra-thin glass sheet (A) with a thickness of 10 μm or more and 100 μm or less having first and second opposing surfaces,
an organic film (B) disposed on either the first or second surface, and
an organic film (C) disposed on the surface opposing the surface on which the organic film (B) is formed,
wherein
the organic film (B) is formed from a composition
containing a thermoplastic resin (D) that is either a polyester resin or a (meth)acrylate resin, that has a weight-average molecular weight of 1,000 to 70,000 and that has a glass transition temperature of 40° C. to 110° C., and
containing a urethane (meth)acrylate compound that accounts for 5 to 35 wt % relative to total solid content in the organic film (B), and
the organic film (C) is formed from a composition containing a siloxane resin (E) with a weight-average molecular weight of 2,000 to 7,000.