US 12,187,884 B2
Grease-resistant film, grease-resistant base material, and grease-resistant paper
Kenta Toshinari, Tsukuba (JP); Yuki Fujii, Kurashiki (JP); Atsushi Inatomi, Tsukuba (JP); and Akio Fujita, Tsukuba (JP)
Assigned to KURARAY CO., LTD., Kurashiki (JP)
Appl. No. 17/413,776
Filed by KURARAY CO., LTD., Kurashiki (JP)
PCT Filed Dec. 20, 2019, PCT No. PCT/JP2019/050071
§ 371(c)(1), (2) Date Jun. 14, 2021,
PCT Pub. No. WO2020/130131, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 2018-240326 (JP), filed on Dec. 21, 2018; and application No. 2019-168774 (JP), filed on Sep. 17, 2019.
Prior Publication US 2022/0033637 A1, Feb. 3, 2022
Int. Cl. C08L 29/04 (2006.01); C08J 5/18 (2006.01); D21H 19/22 (2006.01); D21H 21/16 (2006.01)
CPC C08L 29/04 (2013.01) [C08J 5/18 (2013.01); D21H 19/22 (2013.01); D21H 21/16 (2013.01); C08J 2329/04 (2013.01); C08J 2423/08 (2013.01); C08J 2425/10 (2013.01); C08J 2425/14 (2013.01); C08J 2431/04 (2013.01); C08J 2433/08 (2013.01); C08J 2447/00 (2013.01); C08L 2203/16 (2013.01); C08L 2205/14 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An oil-resistant film, comprising:
(A) a polyvinyl alcohol-based polymer; and
(B) a polymer particle, which is a (meth)acrylic acid ester-based homopolymer particle, having a glass transition temperature of 40° C. or lower,
wherein the polyvinyl alcohol-based polymer (A) is unmodified polyvinyl alcohol or modified polyvinyl alcohol,
wherein the modified polyvinyl alcohol is ethylene-modified polyvinyl alcohol, silicon-modified polyvinyl alcohol, acetoacetyl group-modified polyvinyl alcohol, diacetone group-modified polyvinyl alcohol, or hydroxy group-modified polyvinyl alcohol,
wherein the ethylene-modified polyvinyl alcohol is ethylene-vinyl alcohol copolymer and the content of an ethylene unit in the ethylene-vinyl alcohol copolymer is 0.5 to 15 mol. % relative to all structural units, and
wherein the content of the polymer particle (B) is 1 part by mass or more and less than 150 parts by mass based on 100 parts by mass of the polyvinyl alcohol-based polymer (A).