	US 12,466,978 B2
	Nanocellulose-containing aqueous coating composition for automotive exterior
Yukihiro Ikeura, Aichi (JP); Gen Yokota, Aichi (JP); Eisuke Nishiguchi, Aichi (JP); and Hiroaki Yamada, Kanagawa (JP)
Assigned to KANSAI PAINT CO., LTD., Hyogo (JP)
Appl. No. 18/289,285
Filed by KANSAI PAINT CO., LTD., Hyogo (JP)
PCT Filed Mar. 31, 2022, PCT No. PCT/JP2022/016615 § 371(c)(1), (2) Date Nov. 2, 2023, PCT Pub. No. WO2022/259744, PCT Pub. Date Dec. 15, 2022.
Claims priority of application No. 2021-096364 (JP), filed on Jun. 9, 2021.
Prior Publication US 2024/0240049 A1, Jul. 18, 2024
Int. Cl. C09D 175/04 (2006.01); B05D 7/00 (2006.01); B05D 7/14 (2006.01); B05D 7/24 (2006.01); C09D 7/20 (2018.01); C09D 7/65 (2018.01); C09D 17/00 (2006.01); C09D 133/08 (2006.01)

CPC C09D 175/04 (2013.01) [B05D 7/14 (2013.01); B05D 7/24 (2013.01); B05D 7/572 (2013.01); C09D 7/20 (2018.01); C09D 7/65 (2018.01); C09D 17/003 (2013.01); C09D 133/08 (2013.01); B05D 2202/00 (2013.01); B05D 2401/21 (2013.01); B05D 2503/00 (2013.01)]

8 Claims

1. An aqueous coating composition for an automotive exterior, the aqueous coating composition comprising:

resin particles (A);

a crosslinking agent (B);

a pigment (C); and

a nanocellulose (D),

wherein

a content of the nanocellulose (D) is 0.5 to 2.0 parts by mass in terms of solid content with respect to 100 parts by mass of a resin solid content in the coating composition,

a solid content concentration of the coating composition is in a range from 45 to 65 mass %, and

a viscosity of the coating composition measured by a Brookfield-type viscometer under measurement conditions of a temperature of 20° C. and a rotor rotation speed of 60 rpm is in a range from 350 to 1200 mPa·s.