Abstract: A polymer includes a main chain polymer structure and a side chain polymer structure, in which the side chain polymer structure contains a constitutional unit derived from an alkyl (meth)acrylate (a) having an alkyl group having 11 to 30 carbon atoms, and a mass average molecular weight of the polymer is 90000 or less.

Abstract: A polymer includes a main chain polymer structure and a side chain polymer structure, in which the side chain polymer structure contains a constitutional unit derived from an alkyl (meth)acrylate (a) having an alkyl group having 11 to 30 carbon atoms, and at least one of the main chain polymer structure or the side chain polymer structure contains a constitutional unit derived from a (meth)acrylate (b) represented by General Formula (1).

Abstract: What is provided is an adhesive sheet in which a high level of both unevenness followability during bonding and shape holding power when not bonded is achieved and flexibility especially in a low-temperature environment is excellent. The adhesive sheet includes an adhesive layer formed from an adhesive composition containing a (meth)acrylic copolymer, in which (1) when the thickness is set to 0.7 to 1.0 mm, a strain (creep strain) by applying a pressure of 2 kPa at a temperature of 60° C. for 600 seconds is 1000% or more and 100000% or less, (2) in a holding power measurement in accordance with JIS-Z-0237 (ISO29863), a falling time when the adhesive sheet is adhered to a SUS plate with an area of 20 mm×20 mm and a load of 500 gf is applied in an atmosphere of 40° C. is 60 seconds or more, and (3) when the thickness is set to 0.7 to 1.0 mm, a storage shear modulus at ?20° C. (G? (?20° C.

Abstract: There is provided an epoxy resin composition comprising a (meth)acrylic copolymer (A), an epoxy resin (B), and a curing agent (C), wherein the (meth)acrylic copolymer (A) has a constituent unit derived from a macromonomer (a) and a constituent unit derived from a vinyl monomer (b), and wherein a glass transition temperature (TgB) of a polymer obtained by polymerizing only the vinyl monomer (b) is 25° C. or less.

Abstract: Provided are an adhesive resin composition capable of forming an adhesive layer excellent in holding force, wet heat clouding resistance, and low corrosiveness; and an adhesive sheet. The adhesive resin composition includes a (meth)acrylic copolymer (A) having a constituent unit derived from a macromonomer (a) and a constituent unit derived from a vinyl monomer (b), in which the (meth)acrylic copolymer (A) has at least one of an amide bond and a radical polymerizable group.

Abstract: There is provided an epoxy resin composition comprising a (meth)acrylic copolymer (A), an epoxy resin (B), and a curing agent (C), wherein the (meth)acrylic copolymer (A) has a constituent unit derived from a macromonomer (a) and a constituent unit derived from a vinyl monomer (b), and wherein a glass transition temperature (TgB) of a polymer obtained by polymerizing only the vinyl monomer (b) is 25° C. or less.

Abstract: A (meth)acrylic acid copolymer (A) having a weight average molecular weight of 1000 to 1,000,000, and in which when the half-width of the primary scatter peak when measured by small angle X-ray scattering is defined as X, 0.12<X, is used as an adhesive. The (meth)acrylic copolymer (A) is obtained by polymerizing a monomer mixture containing a macromonomer (a) having a number average molecular weight of 500-100,000, and a vinyl monomer (b). The adhesive has sufficient holding force and adhesive force, and the occurrence of adhesive deposit can be prevented when peeled off.

Abstract: Provided are an adhesive resin composition capable of forming an adhesive layer excellent in holding force, wet heat clouding resistance, and low corrosiveness; and an adhesive sheet. The adhesive resin composition includes a (meth)acrylic copolymer (A) having a constituent unit derived from a macromonomer (a) and a constituent unit derived from a vinyl monomer (b), in which the (meth)acrylic copolymer (A) has at least one of an amide bond and a radical polymerizable group.

Abstract: A (meth)acrylic acid copolymer (A) having a weight average molecular weight of 1000 to 1,000,000, and in which when the half-width of the primary scatter peak when measured by small angle X-ray scattering is defined as X, 0.12<X, is used as an adhesive. The (meth)acrylic copolymer (A) is obtained by polymerizing a monomer mixture containing a macromonomer (a) having a number average molecular weight of 500-100,000, and a vinyl monomer (b). The adhesive has sufficient holding force and adhesive force, and the occurrence of adhesive deposit can be prevented when peeled off.