Propylene → Vinylcyclohexane Propylene

Participants

Reaction Steps

Subsequently, 1 of dehydration-purified n-heptane, 8.5 mmol of an organoaluminum compound of formula (C2H5)2Al(OBu)0.3 Cl0.7 (wherein OBu represents a butoxy group), 0.85 mmol of methyl toluylate, and 0.640 g of the above-obtained solid catalyst containing the vinylcyclohexane polymer were successively charged in a 3 l-volume SUS-made autoclave equipped with a stirrer whose atmosphere had been displaced with argon. Then, 50 g of propylene and hydrogen at a partial pressure of 1.5 atm. were added thereto to continue the polymerization for an additional period of 6 hours at 60° C. During the reaction, propylene was fed so as to maintain the polymerization pressure at 6 kg/cm2G. The polymerization was terminated by addition of 50 ml of butanol, and the inner pressure was released. After allowing to stand at 60° C. for 1 hour, the polymerization mixture was taken out and filtered to obtain 187.5 g of a vinyl-cyclohexane-propylene block copolymer. The polymer had an Mw/Mn of 12.5, an [η] of 1.98 dl/g, and a CXS of 1.0% and contained 1890 ppm of the vinylcyclohexane polymer component.

Provenance & Evidence