US 12,083,782 B2
Discoloring body having glossiness
Akio Nakashima, Aichi-ken (JP)
Assigned to THE PILOT INK CO., LTD., Aichi-ken (JP); and KABUSHIKI KAISHA PILOT CORPORATION, Tokyo-to (JP)
Appl. No. 16/625,832
Filed by THE PILOT INK CO., LTD., Aichi-ken (JP)
PCT Filed Jun. 25, 2018, PCT No. PCT/JP2018/023980
§ 371(c)(1), (2) Date Dec. 23, 2019,
PCT Pub. No. WO2019/004113, PCT Pub. Date Jan. 3, 2019.
Claims priority of application No. 2017-127459 (JP), filed on Jun. 29, 2017; application No. 2017-127460 (JP), filed on Jun. 29, 2017; application No. 2018-084506 (JP), filed on Apr. 25, 2018; and application No. 2018-084507 (JP), filed on Apr. 25, 2018.
Prior Publication US 2021/0154972 A1, May 27, 2021
Int. Cl. B32B 7/023 (2019.01); A63H 33/22 (2006.01); B32B 7/12 (2006.01); B44F 1/02 (2006.01); C08J 5/12 (2006.01); C08J 5/18 (2006.01)
CPC B32B 7/023 (2019.01) [B32B 7/12 (2013.01); C08J 5/124 (2013.01); C08J 5/18 (2013.01); A63H 33/22 (2013.01); B32B 2307/4026 (2013.01); B32B 2307/406 (2013.01); B32B 2307/414 (2013.01); B32B 2307/732 (2013.01); B32B 2451/00 (2013.01); B44F 1/02 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A discoloring body capable of reversibly changing color on contact with water comprising:
a supporting body;
a porous layer in which a low refractive index pigment is fixed in a dispersed state by way of a binder resin;
a glossy resin layer formed on the porous layer, wherein the glossy resin layer is a brilliant resin layer having a thickness of 0.1 to 20 μm; and
an adhesive resin layer between the porous layer and the brilliant resin layer, and
wherein an occupancy area ratio of the glossy resin layer is 1% to 95% with respect to a 1 mm square at any position in the porous layer.