公开(公告)号：US4767841A

公开(公告)日：1988-08-30

申请号：US17949

申请日：1987-02-24

申请人： Kenneth D. Goetz ,  Afif M. Nesheiwat ,  Guy Senatore ,  Wei-Teh W. Shang

发明人： Kenneth D. Goetz ,  Afif M. Nesheiwat ,  Guy Senatore ,  Wei-Teh W. Shang

IPC分类号： C08G75/02 ,  C08G75/14

CPC分类号： C08G75/0259 ,  C08G75/0277 ,  Y02P20/582

摘要： Arylene sulfide polymer having a high extrusion rate, e.g. at least about 100 g/10 min. are prepared by a process comprising: (a) dehydrating an aqueous admixture of a suitable sulfur source and a cyclic organic amide; (b) admixing a dihalo-substituted aromatic compound with the dehydrate mixture to form a polymerization mixture wherein the molar ratio of sulfur source to the cyclic organic amide is about 0.39:1 to about 0.6:1; (c) subjecting the polymerization mixture to reaction conditions sufficient to produce the arylene sulfide polymer; and (d) recovering the arylene sulfide polymer.

公开(公告)号：US4882416A

公开(公告)日：1989-11-21

申请号：US209253

申请日：1988-06-20

申请人： Guy Senatore ,  Wei-Teh W. Shang ,  Kenneth D. Goetz

发明人： Guy Senatore ,  Wei-Teh W. Shang ,  Kenneth D. Goetz

IPC分类号： C08G75/02

CPC分类号： C08G75/0281 ,  C08G75/0231 ,  C08G75/0259

摘要： Arylene sulfide polymers which can be linear, branched or modified are prepared by a process which comprises the steps of: (a) admixing a sulfur source and a cyclic organic amide in the presence of water to form an aqueous admixture wherein the molar ratio of the sulfur source to the cyclic organic amide is at least about 0.6:1 to about 1:1; (b) dehydrating said aqueous admixture to form a dehydrated admixture; (c) admixing with said dehydrated admixture at least one polymerizable halo-substituted aromatic compound to form a polymerization mixture; (d) subjecting the polymerization mixture to polymerization conditions effective to produce the arylene sulfide polymer; and (3) recovering the arylene sulfide polymer.

摘要翻译： 可以通过包括以下步骤的方法制备可以是直链，支链或改性的亚芳基硫醚聚合物：（a）在水的存在下混合硫源和环状有机酰胺，形成水混合物，其中 环状有机酰胺的硫源为至少约0.6:1至约1:1; （b）使所述水性混合物脱水以形成脱水混合物; （c）与所述脱水混合物混合至少一种可聚合的卤代芳族化合物以形成聚合混合物; （d）使聚合混合物进行有效产生亚芳基硫醚聚合物的聚合条件; 和（3）回收亚芳硫醚聚合物。

公开(公告)号：US4965370A

公开(公告)日：1990-10-23

申请号：US396208

申请日：1989-08-21

申请人： Kenneth D. Goetz ,  Bradley L. Munro

发明人： Kenneth D. Goetz ,  Bradley L. Munro

IPC分类号： C07D207/26 ,  C07D207/267

CPC分类号： C07D207/267

摘要： A process for recovering N-methyl-2-pyrrolidone from an effluent stream in a poly(arylene sulfide) process containing N-methyl-2-pyrrolidone contaminated with acidic compounds and high boiling contaminants by contacting the kettle liquid from a heavies fractionation zone with an inorganic compound selected from the group consisting of alkaline earth oxides and alkaline earth hydroxides in an amount effective to reduce the acidic compound content of the kettle liquid, and introducing the treated kettle liquid into a thin film evaporation zone to produce an overhead product containing N-methyl-2-pyrrolidone and a bottoms stream containing N-methyl-2-pyrrolidone soluble reaction products of the acidic compounds with the inorganic compound, unreacted acidic compounds and high boiling contaminants. The thin film evaporation zone overhead product stream can be recycled to the heavies fractionation zone, or introduced to an N-methyl-2-pyrrolidone recovery zone and fractionated to produce an overhead product stream consisting essentially of N-methyl-2-pyrrolidone and an intermediate heavies bottoms stream. In a further embodiment, the N-methyl-2-pyrrolidone recovery zone overhead product can be recycled to the heavies fractionation zone.

摘要翻译： 在含有被酸性化合物和高沸点污染物污染的N-甲基-2-吡咯烷酮的聚（亚芳基硫醚）方法中从流出物流中回收N-甲基-2-吡咯烷酮的方法，其通过使来自重质分馏区的釜液与 选自碱土金属氧化物和碱土金属氢氧化物的无机化合物，其量可以有效地降低釜液的酸性化合物含量，并将经处理的釜液引入薄膜蒸发区以产生含有N 甲基-2-吡咯烷酮和含有酸性化合物与无机化合物的N-甲基-2-吡咯烷酮可溶性反应产物的底部物流，未反应的酸性化合物和高沸点污染物。 薄膜蒸发区塔顶产物流可以循环到重质分馏区，或者被引入到N-甲基-2-吡咯烷酮回收区中，并分馏以产生基本上由N-甲基-2-吡咯烷酮和 中间重物底部流。 在另一个实施方案中，N-甲基-2-吡咯烷酮回收区塔顶产物可以再循环到重质分馏区。