CPC D21H 21/18 (2013.01) [C08F 220/1812 (2020.02); C08F 220/1818 (2020.02); C08F 220/36 (2013.01); C09D 5/00 (2013.01); C09D 7/65 (2018.01); C09D 103/02 (2013.01); D21H 17/28 (2013.01); D21H 17/37 (2013.01); D21H 19/12 (2013.01); D21H 27/10 (2013.01); C08F 2800/20 (2013.01)] | 20 Claims |
1. An oil-resistant agent for paper, comprising a fluorine-free copolymer having:
(a) a repeating unit formed from an acrylic monomer having a long-chain hydrocarbon group having 7 to 40 carbon atoms, and
(b) a repeating unit formed from an acrylic monomer having a hydrophilic group,
wherein
the acrylic monomer having a hydrophilic group (b) is at least one compound represented by the formula selected from the group consisting of:
CH2═CX2C(═O)—O—(RO)nX3 (b1),
CH2═CX2C(═O)—O—(RO)n—C(═O)CX2═CH2 (b2), and
CH2═CX2C(═O)—NH—(RO)n—X3 (b3)
wherein
X2 each is independently a hydrogen atom or a methyl group,
X3 each is independently a hydrogen atom, an unsaturated or saturated hydrocarbon group having 1 to 22 carbon atoms,
R is an alkylene group having 2 to 6 carbon atoms, and
n is an integer of 1 to 90,
wherein
an amount of the repeating unit formed from the monomer (b) is 5 to 70% by weight, based on the copolymer.
|