| abstract |
(57) [Summary] [PROBLEMS] To provide a method for preserving a homogeneous catalyst for polymerization, which is capable of suppressing a decrease in activity until the catalyst components are mixed and then fed to a polymerization step. [Structure] In a homogeneous catalyst for polymerization comprising (A) a transition metal compound, (B) a specific oxygen-containing compound compound, and optionally (C) an alkyl group-containing metal compound, each catalyst component is mixed. After that, the method is a method for storing a homogeneous catalyst for polymerization, which is stored at a temperature of less than 25 ° C. |