Abstract: An acrylic resin composition suitable for use as films excellent in transparency, weatherability, hardness, impact resistance, flex cracking resistance, and formability. The resin composition comprises an acrylic graft copolymer (A) including a rubbery acrylic ester polymer (A-a) and a methacrylic polymer (B) comprising 80 wt. % or more methyl methacrylate units, the acrylic resin composition having a specific value of reduced viscosity (0.2-0.8 dl/g), specific values of content (5-45 wt. %) and average particle diameter (50-200 nm) of the rubbery polymer (A-a), a specific relationship between the particle diameter and the crosslinking agent amount (0.02d?w?0.05d; d, average particle diameter (nm); w, amount of crosslinking agent (wt. %)), and a specific value of the degree of grafting (50-250%). The resin composition contains an ultraviolet absorber incorporated therein through copolymerization.

Abstract: A resin composition suitable for forming a film excellent in transparency, weatherability, hardness, shock resistance, bending-fracturing resistance, and moldability; and a film excellent in weatherability even when laminated on a molded body comprising a PVC resin composition containing a plasticizer is provided. The film having the above characteristics can be obtained by making a methacrylic resin composition into a film, the methacrylic resin composition comprising a methacrylic resin composition (C) obtained by polymerizing a methacrylate polymer (A) obtained by polymerizing a monomer mixture mainly composed of alkyl methacrylate in the presence of acrylic crosslinked elastic particles (B) obtained by copolymerizing a monomer mixture mainly composed of alkyl acrylate and a polyfunctional monomer with two or more non-conjugated double bonds per a molecule; and being copolymerized with 0.01 to 50 parts by weight of an ultraviolet absorber represented by the general formula (1).

Abstract: An acrylic resin composition suitable for use as films excellent in transparency, weatherability, hardness, impact resistance, flex cracking resistance, and formability. The resin composition comprises an acrylic graft copolymer (A) including a rubbery acrylic ester polymer (A-a) and a methacrylic polymer (B) comprising 80 wt. % or more methyl methacrylate units, the acrylic resin composition having a specific value of reduced viscosity (0.2-0.8 dl/g), specific values of content (5-45 wt. %) and average particle diameter (50-200 nm) of the rubbery polymer (A-a), a specific relationship between the particle diameter and the crosslinking agent amount (0.02d?w?0.05d; d, average particle diameter (nm); w, amount of crosslinking agent (wt. %)), and a specific value of the degree of grafting (50-250%). The resin composition contains an ultraviolet absorber incorporated therein through copolymerization.

Abstract: To realize an imide resin which is favorable in optical use. The imide resin according to the present invention includes: a repeating unit represented by General Formula (1); a repeating unit represented by General Formula (2); and a repeating unit represented by General Formula (3), wherein an orientation birefringence of the imide resin ranges from ?0.1×10?3 to 0.

Abstract: A resin composition suitable for forming a film excellent in transparency, weatherability, hardness, shock resistance, bending-fracturing resistance, and moldability; and a film excellent in weatherability even when laminated on a molded body comprising a PVC resin composition containing a plasticizer is provided. The film having the above characteristics can be obtained by making a methacrylic resin composition into a film, the methacrylic resin composition comprising a methacrylic resin composition (C) obtained by polymerizing a methacrylate polymer (A) obtained by polymerizing a monomer mixture mainly composed of alkyl methacrylate in the presence of acrylic crosslinked elastic particles (B) obtained by copolymerizing a monomer mixture mainly composed of alkyl acrylate and a polyfunctional monomer with two or more non-conjugated double bonds per a molecule; and being copolymerized with 0.01 to 50 parts by weight of an ultraviolet absorber represented by the general formula (1).

Abstract: To provide an acrylic film, composed of a resin composition (C) that includes an acrylic graft copolymer (A) containing an acrylic ester rubber-like polymer and a methacrylic polymer (B) containing 80% by weight or more of methyl methacrylate, wherein (1) the content of the acrylic ester rubber-like polymer in the resin composition (C) is 5% by weight or more and 30% by weight or less, (2) the average particle size of the acrylic ester rubber-like polymer is 500 to 2000 ?, (3) the relationship between the average particle size d (?) of the acrylic ester rubber-like polymer and the amount w (% by weight) of crosslinking agent used in the acrylic ester rubber-like polymer satisfies the following equation: 0.002d?w?0.005d, (4) the graft ratio of the acrylic graft copolymer (A) is 30% or more and 200% or less, and (5) the reduced viscosity of methyl ethyl ketone soluble matter in the resin composition (C) is 0.2 to 0.8 dl/g.

Abstract: To provide an acrylic film, composed of a resin composition (C) that includes an acrylic graft copolymer (A) containing an acrylic ester rubber-like polymer and a methacrylic polymer (B) containing 80% by weight or more of methyl methacrylate, wherein (1) the content of the acrylic ester rubber-like polymer in the resin composition (C) is 5% by weight or more and 30% by weight or less, (2) the average particle size of the acrylic ester rubber-like polymer is 500 to 2000 ?, (3) the relationship between the average particle size d (?) of the acrylic ester rubber-like polymer and the amount w (% by weight) of crosslinking agent used in the acrylic ester rubber-like polymer satisfies the following equation: 0.002d?w?0.005d, (4) the graft ratio of the acrylic graft copolymer (A) is 30% or more and 200% or less, and (5) the reduced viscosity of methyl ethyl ketone soluble matter in the resin composition (C) is 0.2 to 0.8 dl/g.

Abstract: A rubber latex with its particles grown through cohesion by adding 100 weight parts of (B) a rubber latex (solid), 0.1-15 weight parts (solid) of (A) an acid group-containing latex having an average particle size of 50-500 nm prepared by polymerizing a monomer mixture comprising (a), (b), (c) and (d) [wherein (a)+(b)+(c)+(d)=100 weight %]: (a) 5-25 weight % of at least one of unsaturated acids selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid and crotonic acid, (b) 20-95 weight % of at least one of alkyl methacrylates with its alkyl group 1-12 in carbon number, (c) 0-30 weight % of at least one of alkyl acrylates with its alkyl group 1-12 in carbon number, (d) 0-40 weight % of at least one selected from the group consisting of aromatic vinyls, compounds having at least two polymerizable functional groups in a molecule and vinyl cyanides, copolymerizable with the aforementioned (a), (b) and (c) is provided.

Abstract: A resin composition is disclosed, which comprizes (I) a graft copolymer using a medium-size rubber particles grown by an acid-group-containing latex, (II) a graft copolymer using small-size rubber particles, (III) a styrene-acrylonitrile copolymer, and/or (IV) a styrene-maleimide copolymer, said resin composition containing 5-40 weight % of rubber. The resin composition is not only superior in impact strength, planar impact strength in particular and gloss, but is favorable in moldability and heat resistance.