US 12,304,983 B2
Acrylic copolymer, method for manufacturing same, and acrylic copolymer composition comprising same
Yong Seok Jung, Daejeon (KR); Jung Su Han, Daejeon (KR); Ji Young Lee, Daejeon (KR); Seung Uk Yeu, Daejeon (KR); and Sang Jin Shin, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 17/311,891
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Aug. 21, 2020, PCT No. PCT/KR2020/011183
§ 371(c)(1), (2) Date Jun. 8, 2021,
PCT Pub. No. WO2021/071085, PCT Pub. Date Apr. 15, 2021.
Claims priority of application No. 10-2019-0125869 (KR), filed on Oct. 11, 2019; and application No. 10-2020-0094657 (KR), filed on Jul. 29, 2020.
Prior Publication US 2022/0025086 A1, Jan. 27, 2022
Int. Cl. C08F 220/18 (2006.01); C08F 212/14 (2006.01); C08F 212/36 (2006.01); C08F 220/22 (2006.01); C08F 220/28 (2006.01); C08F 222/10 (2006.01); C08K 3/04 (2006.01)
CPC C08F 212/36 (2013.01) [C08F 212/18 (2020.02); C08F 220/1802 (2020.02); C08F 220/1804 (2020.02); C08F 220/22 (2013.01); C08F 220/281 (2020.02); C08F 222/102 (2020.02); C08K 3/04 (2013.01)] 4 Claims
 
1. An acryl-based copolymer, consisting of a main monomer-derived repeating unit and a polyfunctional monomer-derived moiety,
wherein the main monomer-derived repeating unit consists of a (meth)acrylic acid alkyl ester monomer-derived repeating unit, a (meth)acrylic acid alkoxy alkyl ester monomer-derived repeating unit, and a crosslinkable monomer-derived repeating unit, wherein the (meth)acrylic acid alkyl ester monomer-derived repeating unit is included in an amount of 82% by weight, the (meth)acrylic acid alkoxy alkyl ester monomer-derived repeating unit is included in an amount of 15% by weight, and the crosslinkable monomer-derived repeating unit is included in an amount of 3% by weight based on 100 parts by weight of main monomer mixture,
wherein the polyfunctional monomer of the polyfunctional monomer-derived moiety; includes a vinyl group or an allyl group,
wherein the polyfunctional monomer-derived moiety is included in an amount of 0.001 to 0.05 part by weight based on 100 parts by weight of a total main monomer-derived repeating unit,
wherein the (meth)acrylic acid alkoxy alkyl ester monomer-derived repeating unit is one or more selected from the group consisting of methoxymethyl (meth)acrylate, ethoxyethyl (meth)acrylate, 2-ethoxyethyl (meth)acrylate, 2-butoxyethyl (meth)acrylate, 2-methoxyethyl (meth)acrylate, 2-propoxyethyl (meth)acrylate, 3-methoxypropyl (meth)acrylate, and 4-methoxybutyl (meth)acrylate,
wherein the (meth)acrylic acid alkyl ester monomer-derived repeating unit is one or more selected from the group consisting of methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, n-amyl (meth)acrylate, isoamyl (meth)acrylate, n-hexyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, and cyclohexyl (meth)acrylate,
wherein the crosslinkable monomer of the crosslinkable monomer-derived repeating unit is one or more selected from the group consisting of vinyl chloroacetate, vinyl benzyl chloride, 2-chloro ethyl acrylate, and 2-chloroethyl vinyl ether, and
wherein the polyfunctional monomer is divinylbenzene or allyl methacrylate.