	US 12,467,205 B2
	Process for preparing a coated paper article
Xiangyi Zhang, Phoenixville, PA (US); John A. Roper, III, Midland, MI (US); Andrew Hejl, Lansdale, PA (US); Brian R. Einsla, Collegeville, PA (US); and Matthew Carter, Bala Cynwyd, PA (US)
Assigned to Dow Global Technologies LLC, Midland, MI (US); and Rohm and Haas Company, Collegeville, PA (US)
Appl. No. 18/567,147
Filed by Rohm and Haas Company, Collegeville, PA (US); and Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Jun. 21, 2022, PCT No. PCT/US2022/034204 § 371(c)(1), (2) Date Dec. 5, 2023, PCT Pub. No. WO2023/009242, PCT Pub. Date Feb. 2, 2023.
Claims priority of provisional application 63/225,602, filed on Jul. 26, 2021.
Prior Publication US 2024/0287743 A1, Aug. 29, 2024
Int. Cl. D21H 19/12 (2006.01); C08F 218/08 (2006.01); C09D 5/02 (2006.01); C09D 131/04 (2006.01); D21H 23/52 (2006.01)

CPC D21H 19/12 (2013.01) [C08F 218/08 (2013.01); C09D 5/022 (2013.01); C09D 131/04 (2013.01); D21H 23/52 (2013.01); C08F 2800/20 (2013.01)]

10 Claims

1. A method comprising the steps of applying a composition onto a paper or paperboard substrate, then drying the composition to form a substrate superposed with a film having a dry coat weight in the range of from 1 g/m²to 20 g/m²;

wherein the composition comprises an aqueous dispersion of copolymer particles comprising, based on the weight of the copolymer particles, a) from 40 to 96 weight percent structural units of a vinyl ester; b) from 2 to 50 weight percent structural units of vinyl alcohol; and c) from 0.5 to 30 weight percent structural units of a C₁-C₈linear or branched alkyl acrylate monomer;

wherein the aqueous dispersion has a solids content in the range of from 15 to 60 weight percent; and wherein at least 50 weight percent of the film comprises one or more polymers, wherein at least 50 weight percent of the one or more polymers comprises structural units of the vinyl ester, vinyl alcohol, and the acrylate monomer.