Obtaining caprolactam by cleavage of molten polycaprolactam
    1.
    发明授权
    Obtaining caprolactam by cleavage of molten polycaprolactam 失效
    通过熔融聚己内酰胺的裂解获得己内酰胺

    公开(公告)号:US5536831A

    公开(公告)日:1996-07-16

    申请号:US355285

    申请日:1994-12-12

    CPC分类号: C07D201/12

    摘要: Caprolactam is obtained from caprolactam-containing polymers in the presence of a base under reduced pressure by depolymerizing polymers which contain the repeating unit --[--N(H)--(CH.sub.2).sub.5 --C(O)--] or mixtures consisting essentially offrom 50 to 99.99% by weight of a polymer containing the repeating unit --[--N(H)--(CH.sub.2).sub.5 --C(O)--]--from 0.01 to 50% by weight of additives selected from the group consisting of inorganic fillers, organic and inorganic pigments and dyes,from 0 to 10% by weight of organic and/or inorganic additives,from 0 to 40% by weight of non-polyamide-containing polymers andfrom 0 to 20% by weight of polyamides, with the exception of polycaprolactam and copolyamides prepared from caprolactam,in at least two depolymerization reactors connected in series.

    摘要翻译: 己内酰胺通过在碱存在下在减压下由含有重复单元 - [ - N(H) - (CH 2)5 -C(O) - ]的聚合物或基本上由 50至99.99重量%的含有重复单元的聚合物 - [ - N(H) - (CH 2)5 -C(O) - ] - 0.01至50重量%的选自无机填料 有机和无机颜料和染料,0至10重量%的有机和/或无机添加剂,0至40重量%的非聚酰胺聚合物和0至20重量%的聚酰胺,其中 在由至少两个解聚反应器串联连接的己内酰胺制备的聚己内酰胺和共聚酰胺的例外。

    Separation of isobutene non-reacted during polymerization of isobutene
    3.
    发明授权
    Separation of isobutene non-reacted during polymerization of isobutene 有权
    在异丁烯聚合反应时异丁烯的分离

    公开(公告)号:US07105616B2

    公开(公告)日:2006-09-12

    申请号:US10473595

    申请日:2002-04-10

    申请人: Heinz Auer

    发明人: Heinz Auer

    IPC分类号: C08F4/06

    CPC分类号: C08F6/003 C08L23/20

    摘要: A process for working up a liquid reaction discharge of the cationic polymerization of isobutene, which substantially comprises polyisobutene, unconverted isobutene and, if required, an inert diluent, is described. Problems with foam formation when the unconverted isobutene is being distilled off are avoided if the heated reaction discharge is let down into a flash container and/or not more than 900 m3/h of vapor are expelled per square meter of liquid surface and/or the resulting foam is destroyed, for example in a wet cyclone.

    摘要翻译: 描述了基本上包含聚异丁烯,未转化的异丁烯和如果需要的惰性稀释剂的异丁烯的阳离子聚合的液体反应排放的方法。 当蒸发掉未转化的异丁烯时,如果将加热的反应物排出物放入闪蒸容器中,并且/或不超过900m 3 / h的蒸气排出每平方 液体表面和/或所得泡沫破坏,例如在湿式旋风分离器中。

    Polyisobutene composition
    4.
    发明授权
    Polyisobutene composition 有权
    聚异丁烯组成

    公开(公告)号:US07049383B2

    公开(公告)日:2006-05-23

    申请号:US10482807

    申请日:2002-07-02

    IPC分类号: C08F110/10

    摘要: A polyisobutene composition having a global maximum of the differential molecular weight distribution curve at a molecular weight Mmax of from 3 500 to 8 000 is described, which comprises at least one local maximum at a molecular weight of from 112 to 560. The isobutene oligomers present act as flow improvers and boiling assistants. They are added to higher molecular weight isobutene polymers, preferably before or in the course of a distillation, for removing unconverted isobutene and/or an inert diluent.

    摘要翻译: 描述了在分子量M max> 3 000至8 000时具有总分子量分布曲线的全局最大值的聚异丁烯组合物,其包含至少一个局部最大值,分子量为 存在的异丁烯低聚物作为流动改进剂和沸腾助剂。 将它们加入到较高分子量的异丁烯聚合物中,优选在蒸馏之前或在蒸馏过程中,用于除去未转化的异丁烯和/或惰性稀释剂。

    Method for the manufacture of solid electrolyte capacitors
    6.
    发明授权
    Method for the manufacture of solid electrolyte capacitors 失效
    固体电解电容器的制造方法

    公开(公告)号:US4984342A

    公开(公告)日:1991-01-15

    申请号:US296800

    申请日:1989-01-13

    摘要: A method for manufacturing solid electrolyte capacitors is provided. Pursuant to the method, pores in formed sintered members composed of a valve metal are first nearly filled with manganese dioxide that is produced by pyrolysis of solutions that contain manganese nitrate. Following thereupon, the sintered members are immersed into a dry melt of manganese nitrate that may comprise an additive of manganese dioxide and/or silicon dioxide powder. Subsequently, the members are introduced into a furnace, and heated to approximately 100.degree. C. in dry air. Subsequently, fine drops of water are applied onto the surface of the heated sintered members and the pyrolysis is ended at temperatures of approximately 200.degree. to about 350.degree. C. in a mist of water vapor that flows by.

    摘要翻译: 提供了制造固体电解质电容器的方法。 根据该方法,由阀金属构成的成形烧结体中的孔首先接近充满由含有硝酸锰的溶液热分解产生的二氧化锰。 随后,将烧结构件浸入可能包含二氧化锰和/或二氧化硅粉末的添加剂的硝酸锰的干燥熔体中。 随后,将构件引入炉中,并在干燥空气中加热至约100℃。 随后,将微滴水施加到加热的烧结构件的表面上,并且在大约200℃至大约350℃的温度下,在流过的水蒸汽雾中结束热解。

    Method for producing highly reactive polyisobutenes
    7.
    发明授权
    Method for producing highly reactive polyisobutenes 有权
    生产高反应性聚异丁烯的方法

    公开(公告)号:US06987165B2

    公开(公告)日:2006-01-17

    申请号:US10451743

    申请日:2002-01-07

    IPC分类号: C08F6/06

    摘要: A process for the preparation of highly reactive polyisobutenes is described, in which isobutene is polymerized in the presence of a complex of boron trifluoride and at least one cocatalyst in a liquid organic phase at a reaction temperature of from −60 to −4° C. and water is added in two stages to the organic phase for catalyst deactivation and catalyst extraction.

    摘要翻译: 描述了制备高反应性聚异丁烯的方法,其中异丁烯在-60至-4℃的反应温度下在液态有机相中在三氟化硼与至少一种助催化剂的配合物存在下聚合。 并将水分两步加入到有机相中用于催化剂失活和催化剂萃取。