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83 条记录 (耗时 0.016 秒)

    Dispersions containing living radicals
    1.
    发明申请
    Dispersions containing living radicals 失效
    含有活性基团的分散体

    公开(公告)号：US20040082709A1

    公开(公告)日：2004-04-29

    申请号：US10632764

    申请日：2003-08-01

    发明人： Yadunandan Dar ,  Smita Shah

    IPC分类号： C08L031/00

    CPC分类号： C08F2/16 ,  C08F293/00 ,  C08L53/00 ,  C09D153/00 ,  C09J153/00 ,  Y10S526/922

    摘要： The present invention relates to a dispersion of polymer particles, the particle containing, on average, more than 1 living radicals each, the radicals not being chemically protected. The invention is also directed to a free radical polymerization process resulting in a dispersion containing polymer particles having on average one or more living radicals. The process involves carefully regulating the polymerization conditions to produce small size particles under monomer-starved conditions containing, on average, more than one living radical in every particle. These living polymer radicals can be further reacted to form polymers with a controlled architecture.

    摘要翻译： 本发明涉及聚合物颗粒的分散体，该颗粒平均每个含有多于1个活性基团，所述基团未被化学保护。 本发明还涉及一种自由基聚合方法，其产生含有平均一个或多个活性基团的聚合物颗粒的分散体。 该方法包括仔细调节聚合条件以在单体饥饿条件下产生小尺寸颗粒，其中每个颗粒平均含有多于一个活性基团。 这些活性聚合物基团可以进一步反应以形成具有受控结构的聚合物。

    Tubular polymerization reactors and polymers made therein
    2.
    发明授权
    Tubular polymerization reactors and polymers made therein 有权
    管状聚合反应器和其中制成的聚合物

    公开(公告)号：US06596241B2

    公开(公告)日：2003-07-22

    申请号：US10028552

    申请日：2001-12-19

    申请人： Jan Cyriel Donck

    发明人： Jan Cyriel Donck

    IPC分类号： C08F444

    CPC分类号： B01J19/2415 ,  B01J2219/00006 ,  C08F10/00 ,  C08F110/02 ,  C08F210/02 ,  Y10S526/92 ,  Y10S526/922 ,  C08F2/01 ,  C08F2500/12 ,  C08F2500/04 ,  C08F2/38 ,  C08F2/00

    摘要： Tubular reactor apparatus and processes are provided for improved polymerization including using chain transfer agents and multiple monomer feeds spaced lengthwise along the tubular reactor providing high conversions of monomer into polymer. The invention also relates to polymers made from such a tubular reactor apparatus and processes including those polymers having a low haze value, a density over 0.92 g/cm3 and/or having terminal carbonyl groups. The apparatus and methods uncouple or reduce the dependency between the monomer concentration and transfer agent concentration. The uncoupling in other embodiments may also be varied leading to multiple desirable effects.

    摘要翻译： 提供管式反应器装置和方法用于改进的聚合，包括使用链转移剂和沿着管式反应器沿长度方向间隔开的多个单体进料，提供高分子量转化成聚合物。 本发明还涉及由这种管状反应器装置制备的聚合物和包括具有低雾度值，超过0.92g / cm 3的密度和/或具有末端羰基的那些聚合物的方法。 该装置和方法将单体浓度和转移剂浓度之间的依赖性分离或降低。 在其他实施例中的解偶联也可以变化，导致多个期望的效果。

    Controlled stable free radical emulsion polymerization processes
    3.
    发明授权
    Controlled stable free radical emulsion polymerization processes 失效
    控制稳定的自由基乳液聚合方法

    公开(公告)号：US06472486B2

    公开(公告)日：2002-10-29

    申请号：US09347609

    申请日：1999-07-02

    申请人： Gerrit Klaerner ,  Adam Safir ,  Ralph B. Nielsen ,  Bernd Jandeleit ,  Peter Huefner

    发明人： Gerrit Klaerner ,  Adam Safir ,  Ralph B. Nielsen ,  Bernd Jandeleit ,  Peter Huefner

    IPC分类号： C08F222

    CPC分类号： G01N33/54353 ,  C08F4/00 ,  C08F220/58 ,  Y10S526/922

    摘要： Controlled stable free radical emulsion polymerization processes employ nitroxide control agents having an alpha carbon atom bearing a destabilizing substituent such as hydrogen. The emulsion polymerizations have living characteristics, including the re-initiation of polymer chains, and provide a high degree of control over molecular weight, particle size, polydispersity and polymer composition and architecture. The processes are useful for the preparation of polymer emulsions, including block copolymers, star and graft copolymers, telechelics and macromonomers from a wide range of monomers.

    摘要翻译： 受控的稳定的自由基乳液聚合方法使用具有带有不稳定取代基的α碳原子的氮氧自由基控制剂，例如氢。 乳液聚合具有生物特性，包括重新引发聚合物链，并提供对分子量，粒度，多分散性和聚合物组成和结构的高度控制。 该方法可用于制备聚合物乳液，包括来自各种单体的嵌段共聚物，星形和接枝共聚物，电视电介质和大分子单体。

    Process for producing particulate silicon encapsulated products
    4.
    发明授权
    Process for producing particulate silicon encapsulated products 失效
    生产微粒硅胶囊产品的方法

    公开(公告)号：US5156914A

    公开(公告)日：1992-10-20

    申请号：US696475

    申请日：1991-05-06

    申请人： Jenn S. Shih

    发明人： Jenn S. Shih

    IPC分类号： C08F2/14 ,  C08F26/06

    CPC分类号： A61K8/8176 ,  A61K8/11 ,  A61K8/817 ,  A61K8/891 ,  A61Q5/02 ,  C08F2/14 ,  C08F26/06 ,  A61K2800/412 ,  Y10S507/902 ,  Y10S514/965 ,  Y10S525/936 ,  Y10S526/922 ,  Y10T428/2987

    摘要： This invention relates to an anhydrous, liquid phase process for entrapping droplets of a silicon compound in an organic polymer which involves precharging a reactor at between about 50.degree. and about 80.degree. C. with a polymerization initiator and a non-polar solvent in which the silicon compound is soluble; adding to the precharged reactor, silicon compound under vigorous agitation and gradually introducing from about 50 to about 99 wt. %, based on silicon compound, of a polymerizably precipitatable, aliphatically unsaturated monomer at a controlled rate; continuously polymerizing the monomer component, under vigorous agitation with the silicon compound, at between about 50.degree. and about 165.degree. C. while maintaining a desired monomer level of not more than 10% in the reactor and recovering a solid particulate product of silicon droplets entrapped in said polymerized monomer.

    摘要翻译： 本发明涉及一种用于将硅化合物液滴截留在有机聚合物中的无水液相方法，其涉及在约50℃至约80℃之间的反应器中预先充入聚合引发剂和非极性溶剂，其中 硅化合物可溶; 在剧烈搅拌下向预充电反应器中加入硅化合物，并逐渐引入约50至约99wt。 ％，基于硅化合物，以可控制的速率可聚合的可沉淀的，不饱和的脂族单体; 在大约50℃至165℃之间，在强烈搅拌下将单体组分连续聚合，同时在反应器中保持所需的单体含量不超过10％，并回收夹带的硅滴的固体颗粒产物 在所述聚合单体中。

    Preparation of finely divided homopolymers and copolymers of ethene using a liquid alkane as reaction medium
    5.
    发明授权
    Preparation of finely divided homopolymers and copolymers of ethene using a liquid alkane as reaction medium 失效
    使用液体烷烃作为反应介质制备细碎的乙烯均聚物和共聚物

    公开(公告)号：US4794151A

    公开(公告)日：1988-12-27

    申请号：US035919

    申请日：1987-04-08

    申请人： Rudolf Mueller-Mall ,  Guido Funk ,  Robert Bachl ,  Peter Hennenberger ,  Erich Kolk

    发明人： Rudolf Mueller-Mall ,  Guido Funk ,  Robert Bachl ,  Peter Hennenberger ,  Erich Kolk

    IPC分类号： C08F2/06 ,  C08F2/14 ,  C08F2/18 ,  C08F10/02 ,  C08F210/16 ,  C08F10/08

    CPC分类号： C08F10/02 ,  C08F210/16 ,  Y10S526/909 ,  Y10S526/922

    摘要： A process for the continuous preparation of finely divided homopolymers and copolymers of ethene by catalytic polymerization in a circular tube reactor using a liquid alkane as reaction medium in which the ethene or ethene/comonomer mixture to be polymerized is present in dissolved form and the polymer formed is present in suspended form and running the reaction mixture as a cycle stream to which the feed materials are added by bleeding in and from which the polymer formed is withdrawn by bleeding out reaction mixture, comprising (a) maintaining the mean concentration C.sub.m of polymer in the cycle stream at a value within a certain range and (b) effecting the bleeding out of reaction mixture at a point of the cycle stream at which the concentration of polymer has a value which is lower than the mean concentration C.sub.m by a distinct and definite amount.

    摘要翻译： 通过催化聚合在圆管反应器中连续制备乙烯的均匀聚合物和共聚物的方法，其中使用液体烷烃作为反应介质，其中待聚合的乙烯或乙烯/共聚单体混合物以溶解形式存在并形成聚合物 以悬浮形式存在，并以作为循环流的方式运行反应混合物，通过渗出反应混合物，通过渗出所形成的聚合物而将原料加入到该循环流中，通过渗出反应混合物排出，其包括（a）将聚合物的平均浓度Cm保持在 循环流在一定范围内的值，和（b）在聚合物浓度具有低于平均浓度C m的值的循环流的点处，通过不同的和明确的方式实现反应混合物的渗出 量。

    Manufacture of copolymers of styrene and {60 -methylstyrene
    9.
    发明授权
    Manufacture of copolymers of styrene and {60 -methylstyrene 失效
    苯乙烯和{60-甲基苯乙烯共聚物的制备

    公开(公告)号：US3725506A

    公开(公告)日：1973-04-03

    申请号：US3725506D

    申请日：1971-11-16

    申请人： BASF AG

    发明人： BOLTE H ,  WITTMER P ,  HEIL E ,  WILLERSINN H

    IPC分类号： C08F212/08 ,  C08F19/02 ,  C08F19/04

    CPC分类号： C08F212/08 ,  Y10S526/922

    摘要： Continuous process for the manufacture of copolymers of styrene and Alpha -methylstyrene having a substantially statistical distribution of the monomers by anionic polymerization at low temperatures with thorough mixing of the reactants. The process is characterized in that at least part of the heat of reaction is removed by evaporative cooling and that the monomers are fed to the polymerization zone at different points.

    摘要翻译： 用于制备苯乙烯和α-甲基苯乙烯的共聚物的连续方法，其通过阴离子聚合在低温下通过反应物的充分混合具有单体的基本统计分布。