申请人:Otkrytoe Aktsionernoe Obschestvo 'Efremovsky
Zavod Sinteticheskogo Kauchuka'
公开号:EP1972644A1
公开(公告)日:2008-09-24
The invention relates to high-molecular compound engineering, in particular to producing stereoregular polidienes by using Ziegler-Natta catalytic systems. The inventive method for producing a cis-1,4 diene rubber, i.e. butadiene and isoprene (co)polymers exhibiting a narrow molecular-mass distribution, is carried out by (co)polymerising diene monomers in a hydrocarbon solvent medium, wherein the diene is embodied in the form of a butadiene, isoprene or the mixtures thereof, in transmitting monomers or the mixtures thereof simultaneously or separately by portions, wherein a catalyst is introduced into a first, along the path, reactor, only, and 1-99 mass % of the monomer total quantity is delivered in the first, along the path, reactor in the form of a charge, and afterwards, 1-99 mass % of the remaining monomer is distributed between the subsequent second and third reactors simultaneously or in each reactor individually. The hydrocarbon solvent is delivered simultaneously and not together with a monomer supplied to the third and subsequent reactors. The catalyst for carrying out said method is produced by interacting compound of rare-earth elements selected from a sequence of lanthanides having 57-71 ordinal numbers in the form of hydrocarbon solutions, conjugated diene monomer, halide-containing compound and aluminium-organic compounds (AOC), including AOC hydride and metal aluminium fine dispersion-containing compounds and, simultaneously, in different combinations, compounds selected from a polyalkylalumoxanes, aluminium hydrides and hydrogen group which make it possible to additionally control the target product molar characteristics.
本发明涉及高分子化合物工程,特别是通过使用齐格勒-纳塔催化系统生产立体配位聚二烯。本发明生产顺式-1,4 二烯橡胶的方法,即在烃溶剂介质中(共)聚合二烯单体,其中二烯以
丁二烯、
异戊二烯或它们的混合物的形式存在,同时或分 别将单体或它们的混合物输送、其中,催化剂仅被引入沿路径的第一个反应器中,单体总量的 1-99 质量%以装料的形式被输送到沿路径的第一个反应器中,然后,剩余单体的 1-99 质量%在随后的第二和第三反应器中同时或单独分配到每个反应器中。烃类溶剂与供应给第三和后续反应器的单体同时输送,而不是一起输送。用于实施上述方法的催化剂是由选自具有 57-71 序数的
镧系元素的稀土元素化合物以烃类溶液、共轭二烯单体、
含卤化合物和铝有机化合物(AOC)(包括铝有机化合物
氢化物和含
金属铝精细分散体的化合物)的形式,同时以不同的组合形式,与选自聚烷基铝氧烷、铝
氢化物和氢基的化合物相互作用而产生的,这使得额外控制目标产品摩尔特性成为可能。