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公开(公告)号：US07446153B2
公开(公告)日：2008-11-04
申请号：US11612705
申请日：2006-12-19
IPC分类号： C08F8/18
摘要： Bromination of styrenic polymer is carried out in a closed reaction system to retain HX coproduct (where HX is HBr or HCl, or both) in the bromination reaction mixture at superatmospheric pressure. Preferably, the reaction mixture which includes the brominated styrenic polymer and substantially all of the HX coproduct formed is discharged into an aqueous quenching medium. By operating in this manner, the reaction is terminated and the brominated styrenic polymer of desired bromine content and substantially all HX coproduct are captured in the same operation, process equipment costs are reduced, and processing of the reaction mixture is facilitated.
摘要翻译： 苯乙烯聚合物的溴化在闭合反应体系中进行，以在超大气压下在溴化反应混合物中保留HX副产物（其中HX为HBr或HCl或两者）。 优选地，将包含溴化苯乙烯聚合物和基本上所有形成的HX副产物的反应混合物排出到含水淬火介质中。 以这种方式操作，终止反应，并且在相同的操作中捕获所需溴含量和基本上所有HX副产物的溴化苯乙烯聚合物，降低了工艺设备成本，并且促进了反应混合物的加工。
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公开(公告)号：US20100087620A1
公开(公告)日：2010-04-08
申请号：US12636250
申请日：2009-12-11
IPC分类号： C08G79/00
摘要： Concurrently fed into a reaction zone held at about 10° C. or less are brominating agent, aluminum halide catalyst, and a solution of anionic styrenic polymer having a GPC Mn about 2000-30,000. The components are in at least two separate feed streams. The feeds are proportioned to maintain (a) the amount of aluminum halide being fed at about 0.8 mole percent or less based on the amount of aromatic monomeric units in the polymer being fed, and (b) amounts of brominating agent and unbrominated polymer in the reaction zone that produce a final washed and dried polymer product containing about 60-71 wt % bromine. The catalyst is deactivated, bromide ions and catalyst residues are washed away from the reaction mixture, and the brominated anionic styrenic polymer is recovered and dried. The dried polymer has a volatile bromobenzene content of about 600 ppm (wt/wt) or less as well as other beneficial properties.
摘要翻译： 同时加入保持在约10℃或更低的反应区域的是溴化剂，卤化铝催化剂和具有大约2000-30,000的GPC Mn的阴离子苯乙烯聚合物溶液。 这些组件至少有两个单独的进料流。 进料成比例以维持（a）以所加入的聚合物中的芳族单体单元的量为基准，以约0.8摩尔％或更少的量加入卤化铝的量，和（b）溴化剂和未溴化聚合物的量 反应区，其产生含有约60-71重量％溴的最终洗涤和干燥的聚合物产物。 催化剂失活，溴化物离子和催化剂残余物从反应混合物中洗去，回收溴化阴离子苯乙烯聚合物并干燥。 干燥的聚合物具有约600ppm（wt / wt）或更低的挥发性溴苯含量以及其它有益特性。
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公开(公告)号：US08071688B2
公开(公告)日：2011-12-06
申请号：US12636250
申请日：2009-12-11
IPC分类号： C08F12/08
摘要： Concurrently fed into a reaction zone held at about 10° C. or less are brominating agent, aluminum halide catalyst, and a solution of anionic styrenic polymer having a GPC Mn about 2000-30,000. The components are in at least two separate feed streams. The feeds are proportioned to maintain (a) the amount of aluminum halide being fed at about 0.8 mole percent or less based on the amount of aromatic monomeric units in the polymer being fed, and (b) amounts of brominating agent and unbrominated polymer in the reaction zone that produce a final washed and dried polymer product containing about 60-71 wt % bromine. The catalyst is deactivated, bromide ions and catalyst residues are washed away from the reaction mixture, and the brominated anionic styrenic polymer is recovered and dried. The dried polymer has a volatile bromobenzene content of about 600 ppm (wt/wt) or less as well as other beneficial properties.
摘要翻译： 同时加入保持在约10℃或更低的反应区域的是溴化剂，卤化铝催化剂和具有大约2000-30,000的GPC Mn的阴离子苯乙烯聚合物溶液。 这些组件至少有两个单独的进料流。 进料成比例以维持（a）基于所加入的聚合物中芳族单体单元的量，以约0.8摩尔％或更少的量加入卤化铝的量，和（b）溴化剂和未溴化聚合物的量 反应区，其产生含有约60-71重量％溴的最终洗涤和干燥的聚合物产物。 催化剂失活，溴化物离子和催化剂残余物从反应混合物中洗去，回收溴化阴离子苯乙烯聚合物并干燥。 干燥的聚合物具有约600ppm（wt / wt）或更低的挥发性溴苯含量以及其它有益特性。
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公开(公告)号：US07638583B2
公开(公告)日：2009-12-29
申请号：US11612991
申请日：2006-12-19
IPC分类号： C08F12/08
摘要： Concurrently fed into a reaction zone held at about 10° C. or less are brominating agent, aluminum halide catalyst, and a solution of anionic styrenic polymer having a GPC Mn about 2000-30,000. The components are in at least two separate feed streams. The feeds are proportioned to maintain (a) the amount of aluminum halide being fed at about 0.8 mole percent or less based on the amount of aromatic monomeric units in the polymer being fed, and (b) amounts of brominating agent and unbrominated polymer in the reaction zone that produce a final washed and dried polymer product containing about 60-71 wt % bromine. The catalyst is deactivated, bromide ions and catalyst residues are washed away from the reaction mixture, and the brominated anionic styrenic polymer is recovered and dried. The dried polymer has a volatile bromobenzene content of about 600 ppm (wt/wt) or less as well as other beneficial properties.
摘要翻译： 同时加入保持在约10℃或更低的反应区域的是溴化剂，卤化铝催化剂和具有大约2000-30,000的GPC Mn的阴离子苯乙烯聚合物溶液。 这些组件至少有两个单独的进料流。 进料成比例以维持（a）以所加入的聚合物中的芳族单体单元的量为基准，以约0.8摩尔％或更少的量加入卤化铝的量，和（b）溴化剂和未溴化聚合物的量 反应区，其产生含有约60-71重量％溴的最终洗涤和干燥的聚合物产物。 催化剂失活，溴化物离子和催化剂残余物从反应混合物中洗去，回收溴化阴离子苯乙烯聚合物并干燥。 干燥的聚合物具有约600ppm（wt / wt）或更低的挥发性溴苯含量以及其它有益特性。
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