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    Method for postpolymerization of polyamide granules after polymerization in melt and an equipment for performing this method
    1.
    发明授权
    Method for postpolymerization of polyamide granules after polymerization in melt and an equipment for performing this method 失效
    熔融聚合后聚酰胺颗粒的后聚合方法和用于进行该方法的设备

    公开(公告)号：US4755590A

    公开(公告)日：1988-07-05

    申请号：US928973

    申请日：1986-11-10

    申请人： Vladimir Kubanek ,  Zdenek Sterbacek ,  Jaroslav Kralicek

    发明人： Vladimir Kubanek ,  Zdenek Sterbacek ,  Jaroslav Kralicek

    IPC分类号： B01J19/00 ,  B01J19/28 ,  C08G69/18 ,  C08G69/46

    CPC分类号： C08G69/18 ,  B01J19/0013 ,  B01J19/285 ,  C08G69/46 ,  B01J2219/00063 ,  B01J2219/00094 ,  B01J2219/00132 ,  B01J2219/00155 ,  B01J2219/00166

    摘要： The invention pertains to a method for postpolymerization of granules of polyamide based on .epsilon.-caprolactam and formed by the anionic polymerization in melt and solves the problem of decreasing the content of low-molecular-weight substances in granules. At the same time, the invention pertains to an arrangement of equipment for performing the postpolymerization. The objective of the invention is a method for the continuous postpolymerization of polyamide based on .epsilon.-caprolactam and formed by the anionic polymerization in melt, wherein the postpolymerization proceeds in two stages, while the granules are heated in the first stage to the required temperature of postpolymerization 160.degree. to 200.degree. C. for 5 to 30 minutes during their vertical transport and allowed at this temperature for 2 to 6 hours in the second stage without mechanical intervention at their gravitation transport which is assisted by vibrations or a reservoir.An equipment for performing the method according to the invention which is formed by a two-stage unit consisting of a vertical vibration conveyer-heat exchanger and a reservoir, while the heat exchanger is provided with a heating jacket, a hopper in the lower part, and a heated overfall in the upper part, through which it is connected with the reservoir, while the reservoir is furnished outside with a jacket and a vibrator, inside with two plate heat-exchangers with the heating controlled by a temperature sensor, and in the lower part with a turnstile.

    摘要翻译： 本发明涉及一种基于ε-己内酰胺的聚酰胺颗粒的后聚合方法，其通过阴离子聚合在熔体中形成，并解决了降低颗粒中低分子量物质含量的问题。 同时，本发明涉及用于进行后聚合的设备的布置。 本发明的目的是一种用于基于ε-己内酰胺的聚酰胺的连续后聚合并通过在熔体中的阴离子聚合形成的方法，其中后聚合进行两个阶段，同时将颗粒在第一阶段加热至所需温度 后聚合160°至200℃，在其垂直运输期间持续5至30分钟，并且在该温度下在第二阶段允许其在由振动或储层辅助的重力运输下的机械干预下进行2至6小时。 一种用于执行根据本发明的方法的设备，其由由垂直振动输送器 - 热交换器和储存器组成的两级单元形成，而热交换器设置有加热套，下部的料斗， 在上部设有一个加热的溢流口，通过它与储存器连接，而储存器外部设有一个外壳和一个振动器，里面有两个板式换热器，加热由温度传感器控制，在 下部有一个十字转门。

    Process for producing pure magnesium sulphite
    4.
    发明授权
    Process for producing pure magnesium sulphite 失效
    生产纯亚硫酸镁的方法

    公开(公告)号：US4685935A

    公开(公告)日：1987-08-11

    申请号：US879343

    申请日：1986-06-26

    申请人： Stanislav Najmr ,  Zdenek Jerman ,  Jaroslav Kralicek

    发明人： Stanislav Najmr ,  Zdenek Jerman ,  Jaroslav Kralicek

    IPC分类号： B01D53/50 ,  C01F5/42 ,  C01D5/16

    CPC分类号： B01D53/501 ,  C01F5/42

    摘要： A process for producing a pure magnesium sulphite from crude crystalline magnesium sulphite. Into a full suspension or flow containing magnesium sulphite crystals at least one further water-containing and heat-supplying flow is led. The heat-supplying flow rapidly increases the temperature of the suspension to above 80.degree. C. in less than 10 seconds, preferably in less than 2 seconds. The solid water-insoluble fraction is then separated from the resulting flow, and the pure product is recrystallized from the solution. The solution may be recycled into the process either for further purification or for use as at least one heat-supplying flow.

    摘要翻译： 从粗结晶亚硫酸镁生产纯亚硫酸镁的方法。 进入含有亚硫酸镁晶体的完全悬浮液或流体时，引入至少一个另外的含水和供热流。 供热流在不到10秒钟内，最好在少于2秒钟内将悬浮液的温度迅速提高到80℃以上。 然后将固体水不溶性级分与所得流分离，纯产物从溶液中重结晶。 该溶液可以再循环到该方法中用于进一步纯化或用作至少一个供热流。

    Process of purification of magnesic raw material
    7.
    发明授权
    Process of purification of magnesic raw material 失效
    氧化镁原料净化工艺

    公开(公告)号：US4474737A

    公开(公告)日：1984-10-02

    申请号：US457046

    申请日：1983-01-10

    申请人： Stanislav Najmr ,  Zdenek Jerman ,  Jaroslav Kralicek

    发明人： Stanislav Najmr ,  Zdenek Jerman ,  Jaroslav Kralicek

    IPC分类号： C01F5/42 ,  C01D5/16

    CPC分类号： C01F5/42

    摘要： Process of purification of magnesic raw material. Sulphur dioxide is allowed to react with an aqueous suspension of calcinated magnesite, crude or contaminated magnesium oxide, magnesium hydroxide, hydrated magnesium carbonates, or crude crystals of magnesium sulphite, and, after reaching a pH of 3 to 7.5 the reaction mixture is separated into a solid phase at least one fraction of which is rich in MgSO.sub.3.xH.sub.2 O, wherein x stands for 3 or 6, and at least one fraction containing concentrated impurities. The whole process is carried out at least once. A reaction mixture having a pH below 5 can be preferably transferred to pH 5.2 by the addition of an alkali, e.g. magnesium oxide or magnesium hydroxide, whereupon separation of at least two fractions of the solid phase is accomplished. The fractions obtained can be further purified by mixing in a hydrophilic liquid, and by a following separation. The fraction of crude magnesium sulphite crystals can be heated to a temperature over 60 degress C., preferably to 90 to 100 degrees C., whereupon the solution containing magnesium sulphite is separated from solid impurities, or the treated mixture is cooled to a temperature below 60 degrees C. and solid phases are separated into one or more fractions rich in MgSO.sub.3.xH.sub.2 O and to one or more fractions mainly containing impurities. Filtration, sedimentation, or centrifugation can be used for the separation.

    摘要翻译： 氧化镁原料净化工艺 使二氧化硫与煅烧的菱镁矿，粗或污染的氧化镁，氢氧化镁，水合碳酸镁或亚硫酸镁的粗晶体的水悬浮液反应，并且在达到3至7.5的pH后，将反应混合物分离成 固相，其至少一部分富含MgSO 4·xH 2 O，其中x代表3或6，和至少一个含有浓缩杂质的馏分。 整个过程至少进行一次。 优选将pH低于5的反应混合物通过加入碱，例如， 氧化镁或氢氧化镁，从而完成固相的至少两个部分的分离。 得到的级分可以通过在亲水性液体中混合，并通过以下分离进一步纯化。 粗亚硫酸镁晶体的分数可以加热到60℃以上，优选加热至90-100℃，由此将含有亚硫酸镁的溶液与固体杂质分离，或将处理过的混合物冷却至低于 将固相分离成富含MgSO 4·xH 2 O的一种或多种级分和主要含有杂质的一种或多种级分。 过滤，沉淀或离心可用于分离。

    Process for the anionic polymerization of 2-pyrrolidone with fast freezing step
    8.
    发明授权
    Process for the anionic polymerization of 2-pyrrolidone with fast freezing step 失效
    快速冷冻步骤2-吡咯烷酮的阴离子聚合方法

    公开(公告)号：US4343933A

    公开(公告)日：1982-08-10

    申请号：US191147

    申请日：1980-09-26

    申请人： Jan Roda ,  Jaroslav Kralicek

    发明人： Jan Roda ,  Jaroslav Kralicek

    IPC分类号： C08G69/24

    CPC分类号： C08G69/24

    摘要： Process which accelerates the activated and non-activated polymerization of 2-pyrrolidone. A prepared polymerization charge containing monomer and components of the initiation system is first allowed to polymerize at a temperature above the monomer melting temperature, then is cooled below the melting point of the mixture, and then the crystalline reaction mixture is heated to a polymerization temperature of 25.degree. to 60.degree. C.

    摘要翻译： 加速2-吡咯烷酮的活化和未活化聚合的方法。 首先使含有单体和引发体系的组分的制备的聚合电荷在高于单体熔融温度的温度下聚合，然后冷却至低于混合物的熔点，然后将结晶反应混合物加热至 25℃〜60℃