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1. 发明授权

US4578455A Process and apparatus for removing volatile constituents from polymer melts or pastes 失效
标题翻译：从聚合物熔体或糊状物中除去挥发性成分的方法和设备
公开(公告)号：US4578455A
公开(公告)日：1986-03-25
申请号：US724500
申请日：1985-04-18
申请人： Gunter Pipper , Siegfried Riegger , Josef G. Floss
发明人： Gunter Pipper , Siegfried Riegger , Josef G. Floss
IPC分类号： C08G69/00 , B29C48/76 , C08F6/00 , C08G85/00 , C08F6/28
CPC分类号： B29C47/767 , B29C47/763 , C08F6/00 , C08G85/002 , B29C47/0009
摘要： A process for removing volatile constituents from polymer melts or pastes, wherein the polymer or paste containing the volatile constituents is passed, with continuous formation of fresh surfaces, through one or more zones in which the volatile constituents evaporate, and the volatile constituents are removed from the zone or zones in which they evaporate through, in each case, a plurality of porous orifices, and an apparatus for carrying out said process.
摘要翻译：从聚合物熔体或糊状物中除去挥发性成分的方法，其中含有挥发性成分的聚合物或糊料连续形成新鲜表面，通过其中挥发性成分蒸发的一个或多个区域，并且挥发性成分从其中它们蒸发的区域或每个区域在每种情况下都是多个多孔孔，以及用于执行所述方法的装置。

2. 发明授权

US4537949A Continuous preparation of nylon with diamine recycling 失效
标题翻译：连续制备尼龙与二胺回收
公开(公告)号：US4537949A
公开(公告)日：1985-08-27
申请号：US620563
申请日：1984-06-14
申请人： Franz Schmidt , Gunter Pipper , Josef G. Floss , Franz Zahradnik
发明人： Franz Schmidt , Gunter Pipper , Josef G. Floss , Franz Zahradnik
IPC分类号： C08G69/26 , C08G69/00 , C08G69/28 , C08L77/00
CPC分类号： C08G69/28
摘要： Nylons are prepared by a continuous process in which, in an evaporator zone, an aqueous solution of a salt of a dicarboxylic acid of 6 to 18 carbon atoms and a diamine of 6 to 18 carbon atoms is heated to 250.degree.-300.degree. C. under superatmospheric pressure, with simultaneous vaporization of water and formation of a prepolymer, the prepolymer and the vapors are separated continuously, the vapors are rectified and the entrained diamines are recycled, and the prepolymer is fed to a polycondensation zone and subjected to polycondensation under superatmospheric pressure of from 1 to 10 bar and at from 250.degree. to 300.degree. C., wherein the aqueous salt solution is heated under superatmospheric pressure of from 1 to 10 bar during a residence time of less than 60 seconds, with the proviso that, on leaving the evaporator zone, the degree of conversion is not less than 93% and the water content of the prepolymer is not more than 7% by weight.
摘要翻译：尼龙通过连续方法制备，其中在蒸发器区中将6至18个碳原子的二羧酸盐和6至18个碳原子的二胺的水溶液加热至250-300℃。在超大气压下，随着水的蒸发和预聚物的形成，预聚物和蒸气被连续分离，蒸气被精馏，夹带的二胺被再循环，并将预聚物进料到缩聚区，并在超大气压下进行缩聚压力为1至10巴，在250至300℃，其中在低于60秒的停留时间内，盐水溶液在1至10巴的超大气压下加热，条件是在离开蒸发区，转化度不低于93％，预聚物的含水量不超过7重量％。

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