| abstract |
(57) Abstract: A catalyst for polymer polymerization, for example, a catalyst capable of efficiently producing a polymer having a syndiotactic structure is provided. The invention relates to a contact product of trimethylaluminum and water, aluminum observed by proton nuclear magnetic resonance absorption method - methyl (Al-CH 3) high magnetic field component in the methyl proton signal region based on binding 50 % The following are contact products. |