公开(公告)号：US06225490B1

公开(公告)日：2001-05-01

申请号：US09084786

申请日：1998-05-27

申请人： Hiroshi Nakayama ,  Naoyuki Ida ,  Hiroyuki Kobayashi ,  Yukinori Satoh ,  Yoshihiro Shirota ,  Masaaki Furuya

发明人： Hiroshi Nakayama ,  Naoyuki Ida ,  Hiroyuki Kobayashi ,  Yukinori Satoh ,  Yoshihiro Shirota ,  Masaaki Furuya

IPC分类号： C07F704

CPC分类号： C08G77/06

摘要： For the continuous hydrolysis of organochlorosilane, a reaction system comprising at least three stages of hydrolysis is used. Each stage includes a reactor and a phase separator wherein hydrolysis is effected to form a hydrolysis mixture which is separated into a hydrolyzate and a hydrogen chloride-containing aqueous medium. The separated aqueous medium is circulated to the reactor. The hydrolyzate is conveyed to the reactor of the subsequent stage. The organochlorosilane is fed into the first stage reactor, the aqueous medium containing an amount of water corresponding to the consumption in one stage is fed into one stage reactor from the subsequent stage, and an amount of water corresponding to the consumption in the overall reaction system is fed in the last stage. Then the entire amount of hydrogen chloride generated in multiple stages of hydrolysis is recovered as anhydrous hydrogen chloride from the first stage. The entire amount of the aqueous media separated in the phase separators is retained in the reaction system.

摘要翻译： 对于有机氯硅烷的连续水解，使用包含至少三个水解阶段的反应体系。 每个阶段包括反应器和相分离器，其中进行水解以形成分离成水解产物和含氯化氢的水性介质的水解混合物。 将分离的水性介质循环至反应器。 水解产物被输送到后续阶段的反应器。 将有机氯硅烷进料到第一阶段反应器中，将含有相当于一步消耗量的水的含水介质从后续阶段进料到一级反应器中，并且一定量的水对应于整个反应体系中的消耗 在最后阶段喂养。 然后从第一阶段以多级水解产生的全部量的氯化氢作为无水氯化氢回收。 在相分离器中分离的水性介质的全部量保留在反应体系中。

公开(公告)号：US5917099A

公开(公告)日：1999-06-29

申请号：US78714

申请日：1998-05-14

申请人： Tomomi Narita ,  Hiroyuki Kobayashi ,  Yukinori Satoh ,  Yoshihiro Shirota

发明人： Tomomi Narita ,  Hiroyuki Kobayashi ,  Yukinori Satoh ,  Yoshihiro Shirota

IPC分类号： C07C17/16 ,  C07C19/03

CPC分类号： C07C17/16 ,  Y02P20/582

摘要： Methyl chloride is prepared by effecting liquid-phase reaction between hydrogen chloride and methanol in the absence of a catalyst. The reaction is effected in divided stages including at least an early stage and a last stage. The early stage of reaction is effected in a stoichiometric excess of hydrogen chloride. The last stage of reaction is effected in a stoichiometric excess of methanol. The invention is industrially advantageous in that methyl chloride can be prepared at a high conversion of hydrogen chloride while suppressing the formation of dimethyl ether by-product.

摘要翻译： 在不存在催化剂的情况下通过在氯化氢和甲醇之间进行液相反应制备甲基氯。 反应分为两个阶段进行，包括至少早期阶段和最后阶段。 反应的早期阶段是在化学计量过量的氯化氢中进行。 反应的最后阶段在化学计量过量的甲醇中进行。 本发明在工业上是有利的，因为氯甲烷的高转化率可以制备甲基氯，同时抑制二甲醚副产物的形成。

公开(公告)号：US5210158A

公开(公告)日：1993-05-11

申请号：US741652

申请日：1991-08-07

申请人： Tadashi Amano ,  Shigehiro Hoshida ,  Yoshihiro Shirota

发明人： Tadashi Amano ,  Shigehiro Hoshida ,  Yoshihiro Shirota

IPC分类号： C08F2/00 ,  C08F2/18 ,  C08F2/20 ,  C08F14/00 ,  C08F14/06

CPC分类号： C08F2/002 ,  C08F14/06

摘要： An improvement is proposed in the process of suspension polymerizatiopn of vinyl chloride monomer in an aqueous polymerization medium, by which a resin product of high quality relative to the contents of foamy resin and fish-eyes can be produced in a high efficiency with little deposition of polymer scale on the reactor walls. The improvment comprises heating and keeping the surfaces of the polymerization reactor and accessory equipment coming into contact with the gaseous phase above the polymerization mixture at a temperature of 55.degree. C. or higher during a period starting from a moment when the temperature of the polymerization mixture under temperature elevation up to the polymerization temperature is still 45.degree. C. or lower to a moment when conversion of the monomer into polymer is at least 10% so that foaming on the polymerization mixture can be greatly reduced.

公开(公告)号：US4092471A

公开(公告)日：1978-05-30

申请号：US620819

申请日：1975-10-08

申请人： Shigeru Arai ,  Kenichi Ito ,  Kinya Ogawa ,  Kazuhiko Kurimoto ,  Yoshihiro Shirota

发明人： Shigeru Arai ,  Kenichi Ito ,  Kinya Ogawa ,  Kazuhiko Kurimoto ,  Yoshihiro Shirota

IPC分类号： C08F6/00 ,  C08F6/06 ,  C08F6/16 ,  C08F6/24 ,  C08F14/06 ,  C08F6/10

CPC分类号： C08F6/16

摘要： Unreacted monomer or monomers and any other volatile organic compounds contained in an aqueous dispersion of polymerizate are removed or separated by a method comprising circulating the aqueous polymerizate dispersion from the bottom of its container to the upper part of the container located over the surface of the dispersion via an exterior conduit. The pressure in the container is maintained at a level reduced to about the saturated vapor pressure of water at the temperature of the dispersion. This manner of separation of monomer from polymer serves to improve the working environment as well as the resulting polymer quality, and the monomer or monomers thus recoverd can be advantageously recycled.

摘要翻译： 未反应的单体或单体以及聚合物水性分散体中所含的任何其它挥发性有机化合物被除去或分离，包括使聚合物水分散体从其容器的底部循环到位于分散体表面上的容器的上部 通过外部导管。 在分散体的温度下，容器中的压力保持在水平下降至约饱和的蒸气压。 从聚合物分离单体的这种方式用于改善工作环境以及所得的聚合物质量，并且可以有利地回收这样回收的单体或单体。