| abstract |
An object of the present invention is to provide a softening agent for a thermoplastic resin that gives flexibility, impact-resistance, etc. to a thermoplastic resin. n The present invention provides the following (1) to (3) etc. n (1) A softening agent for a thermoplastic resin comprising polyvinyl ether. n (2) The softening agent according to the above (1), wherein the polyvinyl ether is polyvinyl ether having a structural unit represented by the general formula (I): n n n (wherein R 1 is a hydrogen atom or lower alkyl, and R 2 is substituted or unsubstituted lower alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted aralkyl). n (3) The softening agent according to the above (1) or (2), wherein the weight-average molecular weight of the polyvinyl ether is 1,000 to 3,000,000. |