公开(公告)号：US06677265B1

公开(公告)日：2004-01-13

申请号：US09595634

申请日：2000-06-16

申请人： Brian Kneale ,  James E. Boone ,  Steven P. Diefenbach ,  Cecil P. Loechelt ,  John C. Prindle, Jr.

发明人： Brian Kneale ,  James E. Boone ,  Steven P. Diefenbach ,  Cecil P. Loechelt ,  John C. Prindle, Jr.

IPC分类号： C08F402

CPC分类号： C08F10/02 ,  C08F4/65912 ,  C08F4/65927 ,  C08F110/02 ,  C08F2/06 ,  C08F4/6492 ,  C08F2500/18

摘要： The process features concurrent feeds into the liquid phase of a prepolymerization reaction mixture. These feeds are: a) separate continuous or substantially continuous feeds of (i) a polymerizable vinylolefin, and (ii) a solution in an organic liquid solvent of a metallocene and an aluminoxane and/or metallocene-aluminoxane reaction product; or b) separate continuous or substantially continuous feeds of (i) a polymerizable vinylolefin, (iii) a metallocene optionally in an organic liquid solvent or diluent, and (iv) an aluminoxane optionally in an organic liquid solvent or diluent; or c) separate continuous or substantially continuous feeds of (i) and (ii) and at least one of (iii) and (iv). Particles of catalytically-active, prepolymerized, self-supported olefin polymerization catalyst composition are formed in the reaction medium. The metallocene used as the feed or in making up the feed has at least one polymerizable olefinic substituent in the molecule.

摘要翻译： 该方法同时进料到预聚合反应混合物的液相中。 这些进料是：a）分离的连续或基本上连续的进料，其中（i）可聚合的含氟烯烃，和（ii）金属茂和铝氧烷和/或茂金属 - 铝氧烷反应产物的有机液体溶剂中的溶液; （i）可聚合的烯烃，（iii）任选在有机液体溶剂或稀释剂中的茂金属，和（iv）任选在有机液体溶剂或稀释剂中的铝氧烷的连续或基本上连续的进料; （i）和（ii）和（iii）和（iv）中的至少一种的单独的连续或基本上连续的进料。在反应介质中形成催化活性的，预聚合的，自负载的烯烃聚合催化剂组合物的颗粒 。 用作原料或用于补充原料的茂金属在分子中具有至少一个可聚合的烯属取代基。

公开(公告)号：US4184924A

公开(公告)日：1980-01-22

申请号：US861309

申请日：1977-12-16

申请人： Edwin D. Hornbaker ,  Adam Nugent, Jr. ,  Cecil P. Loechelt

发明人： Edwin D. Hornbaker ,  Adam Nugent, Jr. ,  Cecil P. Loechelt

IPC分类号： B01J8/20 ,  B01J19/18 ,  C08F6/00 ,  B01D3/38 ,  C08F6/10

CPC分类号： B01J19/18 ,  B01J8/20 ,  C08F6/003 ,  B01J2219/00121 ,  B01J2219/00153 ,  B01J2219/00155 ,  B01J2219/00162 ,  B01J2219/00164 ,  B01J2219/185 ,  Y10S203/16

摘要： An apparatus for reducing the vinyl chloride monomer content of polyvinyl chloride resins suspended as a slurry in an aqueous medium. The polyvinyl chloride-water slurry as produced in a conventional suspension resin autoclave, or a resin-water slurry prepared subsequent to suspension polymerization, is placed in a vessel and heated to a suitable temperature for removal of vinyl chloride monomer from the resin. In this operation, the polyvinyl chloride-water slurry is agitated in a vessel and steam is injected directly into the slurry to rapidly heat the slurry up to a minimum temperature of at least about 180.degree. F. The slurry is cooled immediately, or optionally it can be maintained for a period of time at the selected maximum temperature and then rapidly cooled by applying vacuum to the vessel and condensing the vapor phase removed from the vessel. Dried polyvinyl chloride resin produced by this process has been found to have a vinyl chloride monomer content below a detectable limit of 0.5 ppm.

摘要翻译： 一种用于降低在水性介质中作为浆料悬浮的聚氯乙烯树脂的氯乙烯单体含量的装置。 在常规悬浮树脂高压釜中制备的聚氯乙烯 - 水浆料或悬浮聚合后制备的树脂 - 水浆料放入容器中并加热到合适的温度以从树脂中除去氯乙烯单体。 在该操作中，将聚氯乙烯 - 水浆料在容器中搅拌并将蒸汽直接注入到浆料中以将浆料快速加热至至少约180°F的最低温度。浆料立即冷却或任选地 可以在所选择的最高温度下保持一段时间，然后通过对容器施加真空并冷凝从容器去除的气相而快速冷却。 已经发现通过该方法生产的干燥聚氯乙烯树脂的氯乙烯单体含量低于可检测限为0.5ppm。

公开(公告)号：US4086414A

公开(公告)日：1978-04-25

申请号：US649428

申请日：1976-01-15

申请人： Edwin D. Hornbaker ,  Adam Nugent, Jr. ,  Cecil P. Loechelt

发明人： Edwin D. Hornbaker ,  Adam Nugent, Jr. ,  Cecil P. Loechelt

IPC分类号： B01J8/20 ,  B01J19/18 ,  C08F6/00 ,  C08F6/10

CPC分类号： B01J19/18 ,  B01J8/20 ,  C08F6/003 ,  B01J2219/00121 ,  B01J2219/00153 ,  B01J2219/00155 ,  B01J2219/00162 ,  B01J2219/00164 ,  B01J2219/185

摘要： A method for reducing the vinyl chloride monomer content of polyvinyl chloride resins suspended as a slurry in an aqueous medium. The polyvinyl chloride-water slurry as produced in a conventional suspension resin autoclave, or a resin-water slurry prepared subsequent to suspension polymerization, is placed in a vessel and heated to a suitable temperature for removal of vinyl chloride monomer from the resin. In this operation, the polyvinyl chloride-water slurry is agitated in a vessel and steam is injected directly into the slurry to rapidly heat the slurry up to a minimum temperature of at least about 180.degree. F. The slurry is cooled immediately, or optionally it can be maintained for a period of time at the selected maximum temperature and then rapidly cooled by applying vacuum to the vessel and condensing the vapor phase removed from the vessel. Dried polyvinyl chloride resin produced by this process has been found to have a vinyl chloride monomer content below a detectable limit of 0.5 ppm.

摘要翻译： 一种用于降低在水性介质中作为浆料悬浮的聚氯乙烯树脂的氯乙烯单体含量的方法。 在常规悬浮树脂高压釜中制备的聚氯乙烯 - 水浆料或悬浮聚合后制备的树脂 - 水浆料放入容器中并加热到合适的温度以从树脂中除去氯乙烯单体。 在该操作中，将聚氯乙烯 - 水浆料在容器中搅拌并将蒸汽直接注入到浆料中以将浆料快速加热至至少约180°F的最低温度。浆料立即冷却或任选地 可以在所选择的最高温度下保持一段时间，然后通过对容器施加真空并冷凝从容器去除的气相而快速冷却。 已经发现通过该方法生产的干燥聚氯乙烯树脂的氯乙烯单体含量低于可检测限为0.5ppm。