| 摘要 |
Provided are: a resin composition which contains a methacrylic resin and a lubricant, and which is not susceptible to the formation of a gel during melt molding; and the like. A resin composition according to the present invention contains: a resin mixture (M) that contains a methacrylic resin (A) and a vinyl copolymer (B) containing a structural unit of formula (1) and a structural unit of formula (2); and a lubricant. The lubricant satisfies the following conditions (i) and (ii) with respect to 100 parts by mass of the resin mixture (M). (i) A lubricant (x1) that is composed of a monoglyceride of a saturated fatty acid having 10-24 carbon atoms is not contained, or is contained in an amount of 0.1 part by mass or less. (ii) A lubricant (Y), which is composed of at least one substance selected from the group consisting of higher alcohols, hydrocarbons, fatty acids, metal salts of fatty acids, aliphatic amides and fatty acid esters (excluding lubricants (x1) and lubricants (x2) other than lubricants (x1), which are composed of fatty acid esters that have two or more hydroxyl groups in each molecule), in an amount of 0.001-2 parts by mass. (In general formula (1), each of R1 and R2 independently represents a hydrogen atom or an alkyl group.) (In general formula (2), each of R3 and R4 independently represents a hydrogen atom or an alkyl group.) |
