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seen for losningspolymerisation or copolymerisation of one or more conjugated dienes, optionally together with one or more vinylaromatiska foreningar
seen for losningspolymerisation or copolymerisation of one or more conjugated dienes, optionally together with one or more vinylaromatiska foreningar
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机译:可见于一种或多种共轭二烯的缺失聚合或共聚,以及可选地与一种或多种乙烯基芳构胺
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1528039 Continuous anionic polymerization of conjugated dienes MICHELIN & CIE (COMPAGNIE GENERALE DES ESTABLISSEMENTS MICHELIN) 22 Dec 1975 [23 Dec 1974] 52416/75 Heading C3P Conjugated dienes are polymerized optionally with vinyl aromatic monomers, in continuous manner in an open reactor at 20‹ C. to 110‹ C. in solution in a hydrocarbon solvent and in the presence of a lithium or organolithium initiator, the polymerization being effected in the presence of a de-activating system consisting of (a) a chain transfer agent and/or a termination reagent and, when necessary, (b) a polar additive and/or metallation agent, the proportions of initiator, (a) and (b) being such that the ratio of the speed of the deactivation of the living macromolecules to the speed of propagation of the polymerization is from 10SP-5/SP to 5.10SP-3/SP. The compounds employed may fulfil the function of more than one of the ingredients, e.g. toluene may act as chain transfer agent and solvent, vinyl toluene as a chain transfer agent and monomer, and hexamethyl phosphoramide as termination agent and polar additive. Typical Examples refer to the continuous polymerization of butadiene or butadiene/styrene using n- BuLi initiator and heptane or toluene as'solvents, the reagents (a) being toluene, hexamethyl phosphoramide, benzyl chloride or fluorene and where appropriate (b) tetrahydrofuran, sodium dihydrobis (2-methoxyethoxy)aluminate, sodium tetraethylaluminate, sodium naphthalene, and potassium benzophenone.
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机译:1528039共轭二烯的连续阴离子聚合反应MICHELIN&CIE(COMPAGNIE GENERALE DES ESTABLISSEMENTS MICHELIN)1975年12月22日[1974年12月23日]标题C3P共轭二烯可选地与乙烯基芳族单体在开放式反应器中于20 ‹连续聚合。在烃溶剂中的溶液中,在锂或有机锂引发剂的存在下,在约110-110℃下进行,聚合反应在由(a)链转移剂和/或链烷烃组成的减活体系的存在下进行。终止剂和(必要时)(b)极性添加剂和/或金属化剂,引发剂的比例(a)和(b)应使活的大分子的失活速度与活性大分子的速度之比。聚合反应的传播范围是从10 -5 SP>到5.10 -3 SP>。所使用的化合物可以实现一种以上成分的功能,例如一种或多种。甲苯可以用作链转移剂和溶剂,乙烯基甲苯可以用作链转移剂和单体,六甲基磷酰胺可以用作终止剂和极性添加剂。典型的实例是指使用正丁基锂引发剂和庚烷或甲苯作为溶剂的丁二烯或丁二烯/苯乙烯的连续聚合反应,试剂(a)为甲苯,六甲基磷酰胺,苄基氯或芴,以及(b)四氢呋喃钠二氢双(2-甲氧基乙氧基)铝酸盐,四乙基铝酸钠,萘钠和二苯甲酮钾。
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