| 摘要 |
1,161,967. Polymerization catalyst for butadiene. MITSUBISHI CHEMICAL INDUSTRIES Ltd. 2 Feb., 1968 [6 Feb., 1967], No. 5320/68. Heading C3P. A polymerization catalyst for butadiene comprises a nickel or cobalt perchlorate and an organometallic compound of the formula, R m MX n , where R is an alkyl, aryl, or cycloalkyl radical, M is a metal of Groups I to III of the Periodic Table, X is H or halogen, m is 1, 2 or 3, n is 0, 1 or 2, and m+n is equal to the valency of the metal M. The perchlorate may contain water of crystallization. The catalyst may be " preformed " or formed " in situ." The catalyst may be formed and the polymerization carried out in an inert solvent. Bulk polymerization is also possible. In the examples, butadiene is polymerized, and recovered by conventional techniques. The polymer has a high cis-1,4 structure and may be sulphur vulcanized. |
