Acrylic copolymer, method for manufacturing same, and acrylic copolymer composition comprising same

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.