| 摘要 |
1,249,245. Polybutadiene. POLYMER CORP. Ltd. 12 Nov., 1969 [5 Dec., 1968], No. 55305/69. Heading C3P. A cis-1,4 polymer of butadiene-1,3 is prepared by (1) reacting, at a temperature of not more than 20‹ C., a compound of a Group VIII metal and an organo-aluminium compound, both said compounds being dissolved in an inert anhydrous organic liquid, the reaction being carried out in the presence of less than 1À0 mole of water, per mole of aluminium compound, dissolved in said organic liquid, to produce a soluble catalyst; (2) contacting butadiene-1,3 with said catalyst; and (3) polymerizing said butadiene-1,3 to a conversion of at least 35%. In the examples a catalyst is prepared by reacting a solution of cobalt octanoate in benzene with aluminium diethyl chloride in n-hexane and benzene saturated with water, and the catalyst is used to polymerize butadiene-1,3 in the presence of butene-1 and butadiene-1,2 as molecular weight modifiers. |
