| 摘要 |
A polymeric peroxy ester, which consists of a structural unit represented by the formula (I): <CHEM> and a structural unit represented by the general formula (II): <CHEM> , wherein R represents -CH2CH2-, -C IDENTICAL C- or <CHEM> and has an average molecular weight of 1,000-15,000, said structural units (I) and (II) being bonded alternately in a molar ratio within the range of from 6:4 to 4:6, has a 10-hour half-life period temperature of 70-85 DEG C and a high activity at relatively high temperature, is safe in the production and handling, is adapted to be used as a polymerization initiator in the polymerization of vinyl monomer, and can produce a vinyl polymer having a high molecular weight. |
