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.
The present invention provides the following (1) to (3) etc.
(1) A softening agent for a thermoplastic resin comprising polyvinyl ether.
(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):
(wherein R1 is a hydrogen atom or lower alkyl, and R2 is substituted or unsubstituted lower alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted aralkyl).
(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.
本发明的目的是提供一种热塑性
树脂软化剂,使热塑性
树脂具有柔韧性、抗冲击性等。
本发明提供了以下(1)至(3)等。
(1) 由聚
乙烯醚组成的热塑性
树脂软化剂。
(2)根据上述(1)的软化剂,其中聚
乙烯醚是具有通式(I)所代表的结构单元的聚
乙烯醚:
(其中 R1 为氢原子或低级烷基,R2 为取代或未取代的低级烷基、取代或未取代的环烷基、取代或未取代的芳基、取代或未取代的芳烷基)。
(3)根据上述(1)或(2)所述的软化剂,其中聚
乙烯醚的重量平均分子量为 1,000 至 3,000,000。