	US 12,378,350 B2
	Aqueous polyurethane resin dispersion and method for producing same, paint, film arrangement, and structure
Yusuke Suzuki, Kita-ku (JP); Kazuya Sasaki, Kita-ku (JP); and Tatsuzo Murakawa, Kita-ku (JP)
Assigned to DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD., Chuo-ku (JP)
Appl. No. 17/054,940
Filed by DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD., Chuo-ku (JP)
PCT Filed May 14, 2019, PCT No. PCT/JP2019/019012 § 371(c)(1), (2) Date Nov. 12, 2020, PCT Pub. No. WO2019/221087, PCT Pub. Date Nov. 21, 2019.
Claims priority of application No. 2018-092935 (JP), filed on May 14, 2018.
Prior Publication US 2021/0253775 A1, Aug. 19, 2021
Int. Cl. C08G 18/44 (2006.01); C08G 18/48 (2006.01); C08G 18/73 (2006.01); C09D 5/02 (2006.01); C09D 175/12 (2006.01); D06N 3/14 (2006.01)

CPC C08G 18/4825 (2013.01) [C08G 18/44 (2013.01); C08G 18/73 (2013.01); C09D 5/02 (2013.01); C09D 175/12 (2013.01); D06N 3/14 (2013.01); C08G 2150/00 (2013.01)]

18 Claims

1. An aqueous polyurethane resin dispersion, comprising polyurethane resin particles dispersed in water, which contains a nonvolatile component in an amount of 45% by mass or more,

wherein the polyurethane resin particles comprise a polyol component, an isocyanate component, and a diamine component,

the polyurethane resin particles comprise a reaction product of the polyol component, the isocyanate component, and the diamine component,

at least 50 mol % or more of the isocyanate component comprises 1,5-pentamethylene diisocyanate, and

the polyurethane resin particles have a volume-average particle size determined by dynamic light-scattering of from 0.05 to 5 μm.