	US 11,753,556 B2
	Opaque water-based inks
Alexander Lahr, Rock Hill, SC (US); and Bruce Marshall, Fort Mill, SC (US)
Assigned to Sun Chemical Corporation, Parsippany, NJ (US)
Appl. No. 16/607,246
Filed by SUN CHEMICAL CORPORATION, Parsippany, NJ (US)
PCT Filed Apr. 25, 2018, PCT No. PCT/US2018/029345 § 371(c)(1), (2) Date Oct. 22, 2019, PCT Pub. No. WO2018/200665, PCT Pub. Date Nov. 1, 2018.
Claims priority of provisional application 62/491,590, filed on Apr. 28, 2017.
Prior Publication US 2020/0299529 A1, Sep. 24, 2020
Int. Cl. C09D 11/00 (2014.01); C09D 11/10 (2014.01); B41M 1/10 (2006.01); C08K 3/22 (2006.01); C08K 3/30 (2006.01); C08K 5/00 (2006.01); C08K 5/01 (2006.01); C08L 33/08 (2006.01); C09D 11/037 (2014.01); C09D 1/00 (2006.01); C09D 4/00 (2006.01); C09D 5/00 (2006.01)

CPC C09D 11/10 (2013.01) [B41M 1/10 (2013.01); C08K 3/22 (2013.01); C08K 3/30 (2013.01); C08K 5/0025 (2013.01); C08K 5/0041 (2013.01); C08K 5/01 (2013.01); C08L 33/08 (2013.01); C09D 11/037 (2013.01); C08K 2003/2241 (2013.01); C08K 2003/3036 (2013.01); C08L 2201/52 (2013.01); C08L 2205/20 (2013.01)]

15 Claims

1. A method of improving die cutting blade durability, comprising the steps of:

providing an opaque ink comprising water as a volatile component and an opacifying component, wherein the opacifying component comprises 1.0 wt % to 100 wt % hollow sphere resin particles and 0 wt % to 90 wt % of a colorant that is one or more abrasive white pigments, on a solid weight basis of the opacifying component;

printing the ink on a substrate; and

cutting the printed substrate with a die cutting blade;

wherein the durability of the die cutting blade is improved, relative to the durability of a die cutting blade used to cut a substrate printed with an ink comprising an opacifying component containing 100 wt % of a colorant that is abrasive white pigment, on a solid weight basis of the opacifying component.