US 11,807,769 B2
Primer composition for optical articles, and laminate
Junji Momoda, Yamaguchi (JP); Shinobu Izumi, Yamaguchi (JP); and Taichi Hanasaki, Yamaguchi (JP)
Assigned to Tokuyama Corporation, Yamaguchi (JP)
Appl. No. 16/621,388
Filed by Tokuyama Corporation, Yamaguchi (JP)
PCT Filed Jun. 11, 2018, PCT No. PCT/JP2018/022265
§ 371(c)(1), (2) Date Dec. 11, 2019,
PCT Pub. No. WO2018/230513, PCT Pub. Date Dec. 20, 2018.
Claims priority of application No. 2017-116437 (JP), filed on Jun. 14, 2017; application No. 2018-004934 (JP), filed on Jan. 16, 2018; application No. 2018-024719 (JP), filed on Feb. 15, 2018; and application No. 2018-075612 (JP), filed on Apr. 10, 2018.
Prior Publication US 2020/0231840 A1, Jul. 23, 2020
Int. Cl. C09D 175/04 (2006.01); G02B 1/14 (2015.01); C09D 7/63 (2018.01); C08G 18/12 (2006.01); C08G 18/32 (2006.01); C08G 18/48 (2006.01); C08G 18/66 (2006.01); C08G 18/76 (2006.01); C09D 5/32 (2006.01); G02B 1/04 (2006.01); G02C 7/10 (2006.01)
CPC C09D 175/04 (2013.01) [C08G 18/12 (2013.01); C08G 18/3206 (2013.01); C08G 18/4854 (2013.01); C08G 18/6611 (2013.01); C08G 18/7621 (2013.01); C09D 5/32 (2013.01); C09D 7/63 (2018.01); G02B 1/04 (2013.01); G02B 1/14 (2015.01); G02C 7/104 (2013.01); G02C 2202/16 (2013.01)] 16 Claims
 
1. A primer composition for an optical article comprising:
a urethane prepolymer (A) which is a reaction product of an aromatic polyisocyanate compound and a polyol compound and has a reactive group at a terminal end selected from the group consisting of an isocyanate group and a hydroxyl group,
a light-absorbing compound (B) having a local maximum light-absorption wavelength between 320 nm or more and 650 nm or less,
an organic solvent (C) having a solubility parameter of 8 [(cal/cm3)1/2] or more and has no active hydrogen, and
wherein a weight average molecular weight of the urethane prepolymer (A) is 10,000 to 100,000.