| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved manufacturing method of a lactone polymer- modified polyvinyl chloride which has advantages in terms of simplification and economy and produces a modified polymer showing improved homogeneity. SOLUTION: A lactone polymer-modified polyvinyl chloride polymer is made either from a polymer having a number average molecular weight of less than 5,000 grafted with a polyvinyl chloride or from anε-caprolactone polymer having a number average molecular weight of less than 5,000 grafted with a polyvinyl chloride polymer, the graft degree being more than 50%. |
