申请人:JAPAN SYNTHETIC RUBBER CO., LTD.
公开号:EP0267675A2
公开(公告)日:1988-05-18
A process for producing a modified conjugated diene polymer which comprises the steps of (I) polymerizing a conjugated diene in an inert organic solvent in the presence of a catalyst comprising (a) a lanthanum series rare earth element compound, (b) an organoaluminum compound represented by the general formula, AIR1R2R3 (wherein R1, R2 and R3 which may be same or different, are hydrogen atoms or hydrocarbon groups of 1 to 8 carbon atoms and at least one of R1, R2 and R3 is said hydrocarbon group) and, if necessary, at least one member selected from the group consisting of (c) a Lewis acid and/or (d) a Lewis base, and then (II) modifying the resulting reactive polymer with a modifying compound selected from the group consisting of the following components (e), (f) and (g): and (e) an organometal halide compound represented by the general formula, R4nMX4-n(wherein R4 is an alkyl group of 1 to 20 carbon atoms of an aryl group, M is a tin or germanium atom, X is a halogen atom, and n is an integer of 1 to 3), (f) a heterocumulene compound or a three-membered heterocyclic compound having, in the molecule, a bond represented by the general formula, X' = Y = Z or
(wherein X' is a carbon, nitrogen, oxygen or sulfur atom, Y is a carbon or sulfur atom, Z is a nitorgen, oxygen or sulfur atom, and X2 is a nitrogen, oxygen or sulfur atom), and (g) a halogen compound having, in the molecule, a bond represented by the general formula,
(wherein Y' is a nitrogen or oxygen atom and X is a halogen atom). Said modified conjugated diene polymer has excellent characteristics in wear resistance, heat generation, mechanical properties. etc.
一种生产改性共轭二烯聚合物的工艺,包括以下步骤 (I) 在惰性有机溶剂中,在催化剂存在下聚合共轭二烯,催化剂包括 (a) 镧系稀土元素化合物,(b) 通式为 AIR1R2R3 的有机铝化合物(其中 R1、R2 和 R3 可以相同或不同、为氢原子或 1 至 8 个碳原子的烃基,且 R1、R2 和 R3 中至少有一个为所述烃基),必要时还包括至少一种选自 (c) 路易斯酸和/或 (d) 路易斯碱组成的组的成员,然后 (II) 用一种选自以下组分 (e)、(f) 和 (g) 组成的组的改性化合物对所得反应性聚合物进行改性:(e) 由通式 R4nMX4-n 表示的有机金属卤化物化合物(其中 R4 为 1 至 20 个碳原子的芳基烷基,M 为锡或锗原子,X 为卤素原子,n 为 1 至 3 的整数), (f) 分子中具有由通式 X' = Y = Z 表示的键的杂茂化合物或三元杂环化合物或
(其中 X' 为碳、氮、氧或硫原子,Y 为碳或硫原子,Z 为氮原子、氧原子或硫原子,X2 为氮、氧或硫原子),以及 (g) 分子中具有通式所示键的卤素化合物、
(其中 Y' 为氮原子或氧原子,X 为卤素原子)。上述改性共轭二烯聚合物具有优异的耐磨性、发热性和机械性能等特性。