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公开(公告)号：EP0155223B1
公开(公告)日：1989-04-19
申请号：EP85630021.5
申请日：1985-02-26
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公开(公告)号：EP0936232A1
公开(公告)日：1999-08-18
申请号：EP99102387.0
申请日：1999-02-08
IPC分类号： C08F297/04 , C08L95/00
CPC分类号： C08L95/00 , C08F297/04 , C08L53/00 , C08L25/00
摘要： This invention discloses a process for synthesizing a styrene-butadiene polymer which comprises the steps of: (1) continuously charging 1,3-butadiene monomer, an organolithium compound, a polar modifier and an organic solvent into a first polymerization zone, (2) allowing the 1,3-butadiene monomer to polymerize in said first polymerization zone to a conversion of at least 90 percent to produce a living polymer solution, (3) continuously withdrawing said living polymer solution from said first polymerization zone, (4) continuously charging divinyl benzene and the living polymer solution being withdrawn from the first polymerization zone into a second polymerization zone, (5) allowing the divinyl benzene monomer to react with the living polybutadiene chains in said second polymerization zone to produce a solution of living divinylbenzene modified butadiene polymer, (6) continuously withdrawing the solution of said divinylbenzene modified butadiene polymer from the second polymerization zone, (7) continuously charging styrene and the living divinylbenzene modified butadiene polymer being withdrawn from the second polymerization zone into a third polymerization zone, (8) allowing the styrene to polymerize in the third polymerization zone to produce a solution of styrene-butadiene polymer having a number average molecular weight which is within the range of 30,000 to 85,000 and (9) continuously withdrawing the solution of styrene-butadiene polymer from the third polymerization zone.
摘要翻译： 本发明公开了一种合成苯乙烯 - 丁二烯聚合物的方法，包括以下步骤：（1）将1,3-丁二烯单体，有机锂化合物，极性改性剂和有机溶剂连续加入第一聚合区，（2） 使所述1,3-丁二烯单体在所述第一聚合区中聚合至至少90％的转化率以制备活性聚合物溶液，（3）从所述第一聚合区连续抽出所述活性聚合物溶液，（4）连续充电 二乙烯基苯，并且将活性聚合物溶液从第一聚合区域排出到第二聚合区中，（5）使二乙烯基苯单体与所述第二聚合区中的活性聚丁二烯链反应以产生活性二乙烯基苯改性的丁二烯聚合物 ，（6）从第二次聚合z连续取出所述二乙烯基苯改性丁二烯聚合物的溶液 （7）将苯乙烯和从第二聚合区域排出的活性二乙烯基苯改性丁二烯聚合物连续加入到第三聚合区中，（8）使苯乙烯在第三聚合区中聚合以产生苯乙烯 - 丁二烯聚合物 数均分子量在30,000〜85,000范围内，（9）连续地从第三聚合区抽出苯乙烯 - 丁二烯聚合物溶液。
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3.发明公开Process for making tin-coupled rubbery polymers 有权Verfahren zur Herstellung von mit Zinn gekoppelten Kautschukpolymeren
公开(公告)号：EP0930318A1
公开(公告)日：1999-07-21
申请号：EP99100652.9
申请日：1999-01-14
IPC分类号： C08C19/44
CPC分类号： C08C19/44
摘要： Tire rubbers which are prepared by anionic polymerization are frequently coupled with a suitable coupling agent, such as a tin halide, to improve desired properties. It has been unexpectedly found that greatly improved properties for tire rubbers, such as lower hysteresis, can be attained by asymmetrically coupling the rubber. This invention discloses a process for preparing an asymmetrical tin-coupled rubbery polymer which comprises: (1) continuously polymerizing in a first reactor at least one diene monomer to a conversion of at least about 90 percent, utilizing an anionic initiator to produce a polymer cement containing living polydiene rubber chains; (2) continuously feeding the polymer cement produced in the first reactor into a second reactor; (3) adding a tin halide to the polymer cement in a second reactor under conditions of agitation to produce a polymer cement having the tin halide homogeneously dispersed therein, wherein the residence time in the second reactor is within the range of about 15 minutes to about 4 hours; (4) continuously feeding the polymer cement having the tin halide homogeneously dispersed therein into a plug flow reactor having a residence time of about 15 minutes to about 1 hour to produce a polymer cement of the asymmetrically tin-coupled rubbery polymer; and (5) continuously withdrawing the polymer cement of the asymmetrically tin-coupled rubbery polymer from the plug flow reactor. The asymmetrically tin-coupled rubbery polymer made by this process exhibits improved stability on aging.
摘要翻译： 通过阴离子聚合制备的轮胎橡胶通常与合适的偶联剂如卤化锡偶联，以改善所需的性能。 已经意外地发现，通过不对称地连接橡胶，可以获得轮胎橡胶的较大改善的性能，例如较低的滞后。 本发明公开了一种制备不对称锡 - 偶联橡胶状聚合物的方法，其包括：（1）使用阴离子引发剂在第一反应器中将至少一种二烯单体连续聚合至至少约90％的转化率，以产生聚合物粘合剂 含有活性聚二烯橡胶链; （2）将在第一反应器中生产的聚合物粘合剂连续进料到第二反应器中; （3）在搅拌条件下，在第二反应器中向所述聚合物粘合剂中加入锡卤化物以制备其中均匀分散有卤化锡的聚合物粘合剂，其中在第二反应器中的停留时间在约15分钟至约 4个小时; （4）将其中均匀分散有卤化锡的聚合物粘合剂连续进料到具有约15分钟至约1小时的停留时间的活塞式流动反应器中，以制备不对称锡 - 偶联的橡胶状聚合物的聚合物粘合剂; 和（5）从活塞流反应器中连续地取出不对称锡 - 偶联的橡胶状聚合物的聚合物粘合剂。 通过该方法制备的不对称锡 - 偶联的橡胶状聚合物在老化时表现出改进的稳定性。
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公开(公告)号：EP0155223A1
公开(公告)日：1985-09-18
申请号：EP85630021.5
申请日：1985-02-26
摘要： Diisopropenylbenzene is a monomer that can be used in the preparation of many useful polymers and is also a chemical intermediate that can be employed in a number of chemical processes. Diisopropenylbenzene is normally synthesized by the dehydrogenation of diisopropylbenzene. Unfortunately in this dehydrogenation process a number of olefinic impurities are produced as by-products. This invention discloses a process for the separation of diisopropenylbenzene from these impurities and for recycling some of the impurities. In one embodiment of this invention this process comprises: (1) dehydrogenating diisopropylbenzene to form a dehydrogenation mixture containing diisopropenylbenzene and organic impurities, (2) continuously distilling said dehydrogenation mixture to separate said diisopropenylbenzene from said organic impurities in a continuous recovery column 10, (3) fully hydrogenating said organic impurities to form a mixture of regenerated diisopropylbenzene and saturated organic impurities, and (4) fractionally distilling said mixture of regenerated diisopropylbenzene and saturated organic impurities under conditions sufficient to separate said regenerated diisopropylbenzene from said saturated organic impurities. The regenerated diisopropylbenzene can then be recycled for dehydrogenation with fresh diisopropylbenzene in the first step of the above described process.
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