	US 12,269,930 B2
	Polyurethane dispersion
Chikako Kouda, Sodegaura (JP); Kazuyuki Fukuda, Ichihara (JP); and Takashi Uchida, Chiba (JP)
Assigned to Mitsui Chemicals, Inc., Tokyo (JP)
Appl. No. 17/616,886
Filed by MITSUI CHEMICALS, INC., Tokyo (JP)
PCT Filed Jun. 3, 2020, PCT No. PCT/JP2020/021922 § 371(c)(1), (2) Date Dec. 6, 2021, PCT Pub. No. WO2020/250768, PCT Pub. Date Dec. 17, 2020.
Claims priority of application No. 2019-110363 (JP), filed on Jun. 13, 2019.
Prior Publication US 2022/0325059 A1, Oct. 13, 2022
Int. Cl. C09D 175/06 (2006.01); C08G 18/08 (2006.01); C08G 18/12 (2006.01); C08G 18/32 (2006.01); C08G 18/34 (2006.01); C08G 18/44 (2006.01); C08G 18/48 (2006.01); C08G 18/65 (2006.01); C08G 18/66 (2006.01); C08G 18/72 (2006.01); C08G 18/73 (2006.01); C08G 18/75 (2006.01); C08G 18/76 (2006.01); C08J 7/04 (2020.01); C08J 7/048 (2020.01); C09D 175/08 (2006.01)

CPC C08J 7/048 (2020.01) [C08G 18/0823 (2013.01); C08G 18/12 (2013.01); C08G 18/3206 (2013.01); C08G 18/3231 (2013.01); C08G 18/3271 (2013.01); C08G 18/348 (2013.01); C08G 18/44 (2013.01); C08G 18/4825 (2013.01); C08G 18/6511 (2013.01); C08G 18/6517 (2013.01); C08G 18/6659 (2013.01); C08G 18/724 (2013.01); C08G 18/73 (2013.01); C08G 18/753 (2013.01); C08G 18/757 (2013.01); C08G 18/758 (2013.01); C08G 18/7621 (2013.01); C08G 18/7642 (2013.01); C08J 7/0427 (2020.01); C09D 175/06 (2013.01); C09D 175/08 (2013.01); C08J 2367/02 (2013.01); C08J 2475/04 (2013.01)]

6 Claims

1. A polyurethane dispersion obtained by water-dispersing a polyurethane resin, wherein

the polyurethane resin is a reaction product of an isocyanate group-terminated prepolymer that is water-dispersed and a chain extender,

the isocyanate group-terminated prepolymer is obtained by reacting at least a polyisocyanate component with an active hydrogen group-containing component containing an active hydrogen compound having an anionic group,

a ratio of the total moles of a urethane group and a urea group is 1.5 mol or more with respect to 1 kg of the polyurethane dispersion, and

the carbonate ion concentration is 10 ppm or more and 700 ppm or less with respect to the polyurethane dispersion.