PURPOSE: To produce the titled homogeneous copolymer in good yields without a demineralization step, by slurry-copolymerizing propylene with styrene by using a specified Ziegler-Natta catalyst.
CONSTITUTION: Styrene is copolymerized with propylene at 40W90°C in an inert hydrocarbon solvent (styrene/propylene charge molar ratio of about 0.006W1) by using a catalyst comprising (A) a solid component containing titanium, magnesium, a halogen, and an electron-donating compound, obtained by contacting, by grinding, a titanium compound (e.g., titanium tetrachloride) with a magnesium compound (e.g., magnesium dimethoxide), and an electron-donating compound (e.g., methyl benzoate) in, for example, a ball mill, (B) an organometallic compound (e.g., a triethylaluminum/diethylaluminum chloride mixture), and (C) an electron-donating compound.
ABE MASAKAZU
UOI NORITAKE
KATOU KOUJI
| JPS5518442A | 1980-02-08 | |||
| JPS55165908A | 1980-12-24 | |||
| JPS56133303A | 1981-10-19 |