| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a propylene polymer whose stereoregularity is more precisely controlled without changing molecular weight of the polymer.SOLUTION: The method for producing a propylene polymer having controlled stereoregularity includes: a polymerization step comprising supplying hydrogen and propylene into a reactor, and subjecting the propylene to a polymerization reaction in the presence of a transition metal complex and an organoaluminum to form a propylene polymer; a step for measuring the stereoregularity (mmmm%) of an obtained propylene polymer; and a control step comprising comparing the measured value of the stereoregularity of the obtained propylene polymer with a target value, and performing an operation such as increasing the concentration of the organoaluminum in the reaction vessel or the like in a case when the measured value is higher than the target value, or performing an operation such as decreasing the concentration of the organoaluminum in the reaction vessel or the like in a case when the measured value is lower than the target value. |
