US 12,286,547 B2
Inkjet ink and primer fluid set
Xiaoqing Li, Newark, DE (US); Ji Yeon Huh, Newark, DE (US); and Cullen Kirkpatrick, Phoenixville, PA (US)
Assigned to DUPONT ELECTRONICS, INC., Wilmington, DE (US)
Appl. No. 17/757,019
Filed by DUPONT ELECTRONICS, INC., Wilmington, DE (US)
PCT Filed Dec. 9, 2020, PCT No. PCT/US2020/063893
§ 371(c)(1), (2) Date Jun. 8, 2022,
PCT Pub. No. WO2021/126614, PCT Pub. Date Jun. 24, 2021.
Claims priority of provisional application 62/949,795, filed on Dec. 18, 2019.
Prior Publication US 2023/0023036 A1, Jan. 26, 2023
Int. Cl. C09D 11/54 (2014.01); C09D 11/322 (2014.01); C09D 11/38 (2014.01); C09D 11/40 (2014.01)
CPC C09D 11/54 (2013.01) [C09D 11/322 (2013.01); C09D 11/38 (2013.01); C09D 11/40 (2013.01)] 18 Claims
 
1. An inkjet ink and primer fluid set comprising:
a) an aqueous primer composition comprising a multivalent cation salt and a polymeric binder, wherein said composition forms a coating with a dry thickness of from 0.4 to 5.0 micron upon application onto a non-porous plastic substrate, and said coating results in a haze increase of less than 10 on said substrate, said multivalent cation salt is present at an amount less than 20 wt %, based on the total weight of the primer composition, and said polymeric binder is not soluble in water, is stable in the presence of said multivalent cation, and is selected from the group consisting of urethane polymer, acrylic polymer and vinyl polymer;
(b) aqueous inkjet inks, wherein at least one of the inks comprising a pigment dispersion, a first polymeric binder and a second polymeric binder, and wherein said first polymeric binder forms an aggregation with said aqueous primer composition, and said second polymeric binder does not form an aggregation with said aqueous primer composition.