US 11,897,980 B2
Laminated resin sheet for molding, and molded article using same
Masato Takasaki, Osaka (JP); and Atsuhiro Tokita, Tokyo (JP)
Assigned to MITSUBISHI GAS CHEMICAL COMPANY, INC., Tokyo (JP); and MGC FILSHEET CO., LTD., Saitama (JP)
Appl. No. 17/793,729
Filed by MITSUBISHI GAS CHEMICAL COMPANY, INC., Tokyo (JP); and MGC FILSHEET CO., LTD., Saitama (JP)
PCT Filed Feb. 3, 2021, PCT No. PCT/JP2021/003805
§ 371(c)(1), (2) Date Dec. 27, 2022,
PCT Pub. No. WO2021/166636, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 2020-025011 (JP), filed on Feb. 18, 2020.
Prior Publication US 2023/0145247 A1, May 11, 2023
Int. Cl. C08F 220/14 (2006.01); B32B 7/027 (2019.01); B32B 7/02 (2019.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); C09D 5/00 (2006.01)
CPC C08F 220/14 (2013.01) [B32B 7/02 (2013.01); B32B 7/027 (2019.01); B32B 27/08 (2013.01); B32B 27/30 (2013.01); B32B 27/302 (2013.01); B32B 27/308 (2013.01); B32B 27/32 (2013.01); B32B 27/36 (2013.01); B32B 27/365 (2013.01); C09D 5/006 (2013.01); B32B 2250/24 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2270/00 (2013.01); B32B 2307/414 (2013.01); B32B 2307/732 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A laminated resin sheet for molding, which comprises:
a high hardness resin layer containing a high hardness resin;
a base material layer which contains a polycarbonate resin (a1) and is disposed on one surface side of the high hardness resin layer; and
a hard coat anti-glare layer disposed on the other surface side of the high hardness resin layer,
wherein the high hardness resin comprises at least one selected from the group consisting of:
Resin (B2), which is a copolymer (D) containing 6 to 77% by mass of a (meth)acrylic acid ester structural unit, 15 to 71% by mass of a styrene structural unit, and 8 to 23% by mass of an unsaturated dicarboxylic acid structural unit;
Resin (B3), which is a polymer containing a structural unit (c) represented by general formula (5) below:

OG Complex Work Unit Chemistry
Resin (B4), which is a copolymer (G) containing 5 to 20% by mass of a styrene structural unit, 60 to 90% by mass of a (meth)acrylic acid ester structural unit, and 5 to 20% by mass of an N-substituted maleimide structural unit;
Resin (B5), which is a polymer containing a structural unit (e) represented by general formula (7) below:

OG Complex Work Unit Chemistry
and
Resin (B6), which is a copolymer (H) containing 50 to 95% by mass of a styrene structural unit and 5 to 50% by mass of an unsaturated dicarboxylic acid structural unit;
wherein the glass transition point (Tg1) of the high hardness resin and the glass transition point (Tg2) of the polycarbonate resin (a1) satisfy the following relationship:
−10° C.≤(Tg1−Tg2)≤40° C.,
wherein the maximum valley depth (Rv) of the recesses and protrusions of the hard coat anti-glare layer is 0.9 μm or less; and
wherein the laminated resin sheet for molding has a haze of 12% or less.