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94 条记录 (耗时 0.05 秒)

    Removal of lithium from polymer cements
    37.
    发明授权
    Removal of lithium from polymer cements 失效
    从聚合物水泥中去除锂

    公开(公告)号：US5767207A

    公开(公告)日：1998-06-16

    申请号：US652084

    申请日：1996-05-23

    申请人： John David Wilkey ,  Zaida Diaz

    发明人： John David Wilkey ,  Zaida Diaz

    IPC分类号： C08C2/04 ,  C08F6/02 ,  C08F297/02

    CPC分类号： C08C2/04 ,  C08F297/02 ,  C08F6/02

    摘要： A process for preparing a polymer cement which is relatively free of alkali metal salt by preparing the polymer cement with a polymerization terminating agent which is a diketone which leaves alkali metal salt in the cement which is readily removable by centrifugation.

    摘要翻译： 一种制备聚合物胶浆的方法，该聚合物胶浆通过制备具有聚合终止剂的聚合物粘合剂来制备聚合物粘合剂，所述聚合终止剂是在水泥中留下碱金属盐的二酮，其可通过离心容易地除去。

    Concurrent epoxidation and catalyst residue extraction
    38.
    发明授权
    Concurrent epoxidation and catalyst residue extraction 失效
    并行环氧化和催化剂残渣萃取

    公开(公告)号：US5543472A

    公开(公告)日：1996-08-06

    申请号：US442520

    申请日：1995-05-16

    申请人： Craig A. Stevens ,  Bhaskar P. Rao ,  Cary A. Veith ,  James R. Erickson

    发明人： Craig A. Stevens ,  Bhaskar P. Rao ,  Cary A. Veith ,  James R. Erickson

    IPC分类号： C08C2/04 ,  C08C19/06 ,  C08F8/08

    CPC分类号： C08C2/04 ,  C08C19/06

    摘要： A process for the concurrent epoxidation of, and catalyst residue extraction from, anionically polymerized diene-containing polymers which have been hydrogenated using a Group VIII metal catalyst, said process comprising:(a) introducing a catalyst residue-containing diene-containing polymer cement into a reactor,(b) heating the polymer cement to a temperature of 25.degree. to 65.degree. C.,(c) contacting the polymer cement with a caustic solution,(d) contacting the polymer cement with a peracid solution,(e) mixing the polymer, caustic, and acid at 25.degree. to 65.degree. C. for 1/2 to 3 hours,(f) optionally adding sufficient caustic solution to neutralize excess acid while continuing the mixing,(g) adding sufficient water such that the aqueous/organic phase weight ratio is from 0.2:1 to 1:1 while continuing the mixing,(h) allowing the phases to settle for 5 to 90 minutes,(i) removing the aqueous phase from the reactor,(j) optionally repeating steps (g), (h), and (i) until the catalyst residue contents are less than 10 ppm, and(k) removing the polymer cement from the reactor and removing the solvent to recover the epoxidized polymer.

    摘要翻译： 一种使用VIII族金属催化剂进行氢化的阴离子聚合的含二烯烃聚合物的并行环氧化和催化剂残余物萃取的方法，所述方法包括：（a）将含催化剂残余物的含二烯烃的聚合物水泥引入 反应器，（b）将聚合物粘合剂加热到25℃至65℃的温度，（c）使聚合物粘合剂与苛性碱溶液接触，（d）使聚合物粘合剂与过酸溶液接触，（e）混合 25℃至65℃的聚合物，苛性碱和酸，+ E，1/2 + EE至3小时，（f）任选地加入足够的苛性碱溶液以中和过量的酸，同时继续混合，（g）加入 足够的水使得水/有机相重量比为0.2:1至1:1，同时继续混合，（h）允许相沉降5至90分钟，（i）从反应器中除去水相， （j）任选地重复步骤（g），（h）和（i）直到cata st渣残渣含量小于10ppm，（k）从反应器中除去聚合物粘合剂并除去溶剂以回收环氧化聚合物。

    Removal of nickel catalyst from polymer solutions by water addition and centrifugation
    39.
    依法登记的发明
    Removal of nickel catalyst from polymer solutions by water addition and centrifugation 失效
    通过水添加和离心从聚合物溶液中去除镍催化剂

    公开(公告)号：USH1303H

    公开(公告)日：1994-04-05

    申请号：US527970

    申请日：1990-05-24

    申请人： James H. Miller ,  Zaida Diaz ,  Carma J. Gibler

    发明人： James H. Miller ,  Zaida Diaz ,  Carma J. Gibler

    IPC分类号： C08C2/04 ,  C08F6/02 ,  C08F6/08

    CPC分类号： C08F6/02 ,  C08C2/04

    摘要： A process is provided comprising the steps of contacting a Group VIII metal hydrogenation catalyst residue containing polymer solution with from about 2 to about 50 parts by weight water based on 100 parts by weight of polymer solution, centrifuging the polymer from metal containing particles with a centrifugal force such that the centrifugal force times the time duration of centrifugation divided by the viscosity of the polymer solution equals or exceeds about 50 G-minutes/cp, and recovering a polymer solution comprising less than 10 ppm by weight, based on the polymer, of the Group VIII metal.

    摘要翻译： 提供了一种方法，其包括以下步骤：基于100重量份的聚合物溶液使含有聚合物溶液的第VIII族金属加氢催化剂残余物与约2-约50重量份的水接触，用离心机从含金属的颗粒中离心分离 使得离心力乘以离心时间除以聚合物溶液的粘度等于或超过约50G分钟/厘泊，并回收包含基于聚合物的小于10重量ppm的聚合物溶液， 第VIII族金属。