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1. 发明授权

US4334057A Continuous process for recovering polymers from their latexes 失效
标题翻译：从其胶乳中回收聚合物的连续方法
公开(公告)号：US4334057A
公开(公告)日：1982-06-08
申请号：US218085
申请日：1980-12-19
申请人： Gabriele Govoni , Gianfranco Rubichi , Pierluigi Guardigli
发明人： Gabriele Govoni , Gianfranco Rubichi , Pierluigi Guardigli
IPC分类号： C08F6/00 , B01J8/00 , B01J19/24 , B01J19/26 , C08F6/06 , C08F6/14 , C08F6/22 , C08F12/00 , C08F12/08 , C08F212/00 , C08F212/10 , C08F6/10
CPC分类号： C08F6/22 , B01J19/242 , B01J19/26 , B01J8/0055 , B01J2219/00094
摘要： Polymers are continuously recovered from their latexes obtained by polymerization in emulsion by a process comprising the following steps:(A) feeding the polymeric latexes containing 10 to 50% by weight of polymer, at a temperature of from 10.degree. to 120.degree. C., through one or more feeding channels, to the narrow zone or to the divergent section of a nozzle in which water vapor flows at sonic or supersonic speed respectively, according to vapor/latex feeding ratios of 0.1-2 Kg of vapor/Kg of latex, where the latex is subdivided by the water vapor into a dispersion of particles; and(B) continuously feeding the dispersion obtained in step (A) to a tube or an exchanger of the type tube-in-tube directly connected with the divergent section of the nozzle where the dispersion, at a temperature of 100.degree.-150.degree. C. for residence times of from 0.1 to 1 second, maintains a speed of 50-150 m/sec., so providing a dispersion of solid caked particles of polymer and of liquid particles in a vapor phase comprising the unreacted monomers and the water vapor, the vapor phase being separated from the dispersion by means of known methods.
摘要翻译：通过包括以下步骤的方法从乳液中聚合获得的胶乳连续回收聚合物：（A）在10℃至120℃的温度下加入含有10至50重量％聚合物的聚合物胶乳，根据0.1-2Kg蒸气/ Kg胶乳的蒸汽/胶乳进料比，通过一个或多个进料通道分别到窄波段或喷嘴的发散部分，其中水蒸汽以声波或超音速流动，其中胶乳被水蒸汽细分成颗粒分散体; 和（B）将在步骤（A）中获得的分散体连续地供给到与分散体在100-150℃的温度下直接连接的喷管的发散部分的管式或管式换热器的管或换热器 C.停留时间为0.1至1秒，保持速度为50-150米/秒，从而提供聚合物和液体颗粒的固体结块颗粒在包含未反应单体和水蒸气的气相中的分散体，通过已知方法将气相与分散体分离。

2. 发明授权

US4212967A Process for continuous recovery of solid polycarbonate from solutions thereof in organic solvents 失效
标题翻译：从其溶液中在有机溶剂中连续回收固体聚碳酸酯的方法
公开(公告)号：US4212967A
公开(公告)日：1980-07-15
申请号：US14161
申请日：1979-02-22
申请人： Gabriele Govoni , Giovanni Di Drusco , Canzio Corazzari , Pierluigi Guardigli
发明人： Gabriele Govoni , Giovanni Di Drusco , Canzio Corazzari , Pierluigi Guardigli
IPC分类号： C08G63/00 , B01F5/04 , C08G64/20 , C08G64/40 , C08J3/14 , C08G63/72
CPC分类号： C08J3/14 , B01F5/0416 , C08G64/205 , C08G64/403 , C08J2369/00
摘要： Solid polycarbonate is recovered continuously from solutions thereof in organic solvents by a process consisting of:(a) subdividing the polycarbonate solution by steam (water vapor) at either sonic or ultra-sonic speed by means of a De Laval type nozzle;(b) conveying the dispersion thus obtained into a tubular heat exchanger having an increasing cross-section, preferably spirally-shaped or with elbow stretches having a thermal exchange coefficient of 500-1500 Kcal/h.m.sup.2 .degree.C., in which the heat dispersion is kept at 100.degree.-140.degree. C. for periods of time comprised between 0.05 and 5 seconds;(c) separating the solid from the vapors in a cyclone;(d) drying of the solid in a water vapor fluid bed.
摘要翻译：固体聚碳酸酯通过以下工艺由有机溶剂中的溶液连续回收，该方法包括：（a）通过De Laval型喷嘴以声波或超声速将蒸汽（水蒸汽）再分成聚碳酸酯溶液; （b）将如此获得的分散体输送到具有横截面增大的管状热交换器中，该热交换器具有横截面增大，优选为螺旋形状或具有热交换系数为500-1500Kcal / h.m2℃的肘部伸长，其中热量分散体保持在100-140℃，时间为0.05-5秒; （c）在旋风分离器中将固体与蒸汽分离; （d）在水蒸气流化床中干燥固体。

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