| 摘要 |
<p>A process for producing cis-1,4-polybutadiene by contacting butadiene with a catalyst consisting of ( ) at least one organoaluminum compound, (2) at least one organonickel compound selected from the class consisting of nickel salts of carboxylic acids, organic complex compounds of nickel and nickel tetracarbonyl, (3) boron trifluoride gas or a boron trifluoride etherate complex, and (4) at least one alkyl substituted hydroxy containing aromatic compound wherein the alkyl groups leave the hydroxy groups unhindered for chemical activity in that no alkyl groups are present simultaneously on both positions ortho to the hydroxy groups.</p> |
