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    PROCESS FOR WORKING UP PARTICULATE CRUDE POLYOXYMETHYLENE
    3.
    发明申请
    PROCESS FOR WORKING UP PARTICULATE CRUDE POLYOXYMETHYLENE 有权
    工作原理聚甲基苯乙烯的方法

    公开(公告)号：US20130041126A1

    公开(公告)日：2013-02-14

    申请号：US13570904

    申请日：2012-08-09

    Applicant: Jürgen Deininger ,  Jürgen Demeter ,  Rüdiger Häffner ,  Ralf Schulz ,  Achim Stammer

    Inventor： Jürgen Deininger ,  Jürgen Demeter ,  Rüdiger Häffner ,  Ralf Schulz ,  Achim Stammer

    IPC: C08G2/28

    CPC classification number: C08G2/00 ,  C08G2/18 ,  C08G2/38 ,  C08L59/00

    Abstract: The invention relates to a process for working up particulate crude polyoxymethylene, which comprises the following steps: (a) introduction of the particulate crude polyoxymethylene into an extraction column (13) operated at a pressure in the range from 1 to 6 bar, (b) introduction of a polar extractant into the extraction column (13) with a temperature in the range from 95 to 140° C. and a pressure in the range from 1 to 6 bar, wherein from 10 to 1000 ppm, based on the amount of polar extractant introduced, of a buffer substance which buffers in the pH range from 7.5 to 11.5 are introduced into the extraction column (13).

    Abstract translation: 本发明涉及一种加工微粒粗聚甲醛的方法，其包括以下步骤：（a）将颗粒状粗聚甲醛引入到在1-6巴压力下操作的萃取塔（13）中，（b ）将极性萃取剂引入萃取塔（13）中，温度为95至140℃，压力为1至6巴，其中10至1000ppm，基于 引入缓冲物质的极性萃取剂，其缓冲液的pH范围为7.5〜11.5，被引入提取塔（13）。

    POLYOXYMETHYLENE COPOLYMERS, THEIR PREPARATION AND USE
    4.
    发明申请
    POLYOXYMETHYLENE COPOLYMERS, THEIR PREPARATION AND USE 审中-公开
    聚甲基乙烯共聚物，其制备和使用

    公开(公告)号：US20080182966A1

    公开(公告)日：2008-07-31

    申请号：US12058197

    申请日：2008-03-28

    Applicant: Karl-Friedrich Mück ,  Klaus Kurz ,  Michael Hoffmockel

    Inventor： Karl-Friedrich Mück ,  Klaus Kurz ,  Michael Hoffmockel

    IPC: C08G65/34

    CPC classification number: C08G2/38

    Abstract: Copolymers are described containing blocks of the structural repeat units of the formula I and blocks containing structural units of the formula II [—O—CH2—]x,   (I) [—O—R1—],   (II) where R1 is a divalent radical derived from a hydroxy-terminated aliphatic or cycloaliphatic oligomer or polymer which, where appropriate, has ether groups and/or carbonyloxy groups in the chain, and x is a whole number, at least 10.The copolymers may be used for producing moldings.

    Abstract translation: 描述共聚物，其包含式I的结构重复单元的嵌段和含有式II的结构单元的嵌段<？in-line-formula description =“In-line Formulas”end =“lead”→[ - O-CH （I）<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula- 公式描述=“在线公式”end =“lead”？> [ - OR 1 - ]，（II）<？in-line-formula description =“In-line Formulas”end = 其中R 1是衍生自羟基封端的脂族或脂环族低聚物或聚合物的二价基团，其在适当的情况下在链中具有醚基和/或羰氧基，x 是整数，至少为10.共聚物可用于生产模制品。

    Fluorine-containing compounds having polyacetalic structure, and process for preparing them
    5.
    发明授权
    Fluorine-containing compounds having polyacetalic structure, and process for preparing them 失效
    具有聚缩醛结构的含氟化合物及其制备方法

    公开(公告)号：US5637671A

    公开(公告)日：1997-06-10

    申请号：US542443

    申请日：1995-10-12

    Applicant: Ferdinando Danusso ,  Ezio Strepparola ,  Marinella Levi ,  Claudio Tonelli ,  Stefano Turri

    Inventor： Ferdinando Danusso ,  Ezio Strepparola ,  Marinella Levi ,  Claudio Tonelli ,  Stefano Turri

    IPC: C08G65/32 ,  C08G2/38 ,  C08G65/00 ,  C08G65/324 ,  C08G65/329 ,  C08G65/331 ,  C08G4/00

    CPC classification number: C08G65/324 ,  C08G2/38 ,  C08G65/007 ,  C08G65/329 ,  C08G65/331

    Abstract: 1) Disclosed herein are new fluorine-containing compounds having polyacetalic structure, of general formula:[Rf.sub.m --CH.sub.2 O(CH.sub.2 O).sub.c --CH.sub.2 --.brket close-st..sub.n (I)where:Rf=a perfluorooxyalkylene chain having Mn from 500 to 5,000;m=4-25;c=1-10;n=2-100.2) A process for preparing them which comprises carrying out the polycondensation of diols having formula:HORfOH (II)with formaldehyde, in mass or in the presence of solvents, in an acid medium. The compounds of formula (I) can be oligomeric compounds (polymerization degree x.sub.n from 2 to about 20) or polymeric compounds (x.sub.n from about 20 to about 100). They exhibit a high stability to heat and to chemical agents, and Tg values slightly different from the ones of the diols utilized for preparing them.

    Abstract translation: 1）本文公开了具有以下通式的具有聚缩醛结构的新的含氟化合物：[Rfm-CH2O（CH2O）c-CH2- + 548n（I））其中：Rf =具有+ E的全氟氧化烯链，ovs M + EE n从500到5,000; m = 4-25; c = 1-10; n = 2-100。 2）一种制备它们的方法，其包括在酸性介质中，以质量或在溶剂存在下，将具有式：HORFOH（II）的二醇与甲醛缩聚。 式（I）化合物可以是低聚化合物（聚合度+ E，ovs x + EE n从2至约20）或聚合化合物（+ E，ovs x + EE n约20至约100）。 它们对热和化学试剂表现出高稳定性，并且Tg值与用于制备它们的二醇的那些略有不同。

    Fluorine-containing compounds having polyacetalic structure, and process for preparing them
    6.
    发明授权
    Fluorine-containing compounds having polyacetalic structure, and process for preparing them 失效
    具有聚缩醛结构的含氟化合物及其制备方法

    公开(公告)号：US5476918A

    公开(公告)日：1995-12-19

    申请号：US58014

    申请日：1993-05-05

    Applicant: Ferdinando Danusso ,  Ezio Strepparola ,  Marinella Levi ,  Claudio Tonelli ,  Stefano Turri

    Inventor： Ferdinando Danusso ,  Ezio Strepparola ,  Marinella Levi ,  Claudio Tonelli ,  Stefano Turri

    IPC: C08G65/32 ,  C08G2/38 ,  C08G65/00 ,  C08G65/324 ,  C08G65/329 ,  C08G65/331 ,  C07C43/30 ,  C07C43/313 ,  C08G4/00

    CPC classification number: C08G65/324 ,  C08G2/38 ,  C08G65/007 ,  C08G65/329 ,  C08G65/331

    Abstract: 1) New fluorine-containing compounds having polyacetalic structure, of general formula:(I)[Rf.sub.m --CH.sub.2 O(CH.sub.2 O).sub.c --CH.sub.2 ].sub.nwhere:Rf=a perfluorooxyalkylene chain having Mn from 500 to 5,000;m=4-25;c=1-10;n=2-100.2) A process for preparing them, which comprises carrying out the polycondensation of diols having formula:(II) HORfOHwith formaldehyde, in mass or in the presence of solvents, in an acid medium. The compounds of formula (I) can be oligomeric compounds (polymerization degree x.sub.n from 2 to about 20) or polymeric compounds (x.sub.n from about 20 to about 100). They exhibit a high stability to heat and to chemical agents, and Tg values slightly different from the ones of the diols utilized for preparing them.

    Abstract translation: 1）具有通式：（I）[Rfm-CH 2 O（CH 2 O）c -CH 2] n]的具有聚缩醛结构的新的含氟化合物，其中：Rf =具有500-5,000的＆lt;上升＆Mn的全氟氧化烯链; m = 4〜25; c = 1-10; n = 2-100。 2）一种制备它们的方法，其包括在酸性介质中以质量或在溶剂存在下，使式（II）HORFOH与甲醛进行缩聚反应。 式（I）的化合物可以是低聚化合物（聚合度和上限，从2到约20）或聚合化合物（和从约20到约100）。 它们对热和化学试剂表现出高稳定性，并且Tg值与用于制备它们的二醇的那些略有不同。

    Shaped structures
    9.
    发明授权
    Shaped structures 失效
    形状结构

    公开(公告)号：US3600458A

    公开(公告)日：1971-08-17

    申请号：US75979168

    申请日：1968-09-13

    Applicant: CELANESE CORP

    Inventor： JAMISON SAUNDERS E

    IPC: C08G2/08 ,  C08G2/18 ,  C08G2/38 ,  C08J9/26 ,  C08G45/06

    CPC classification number: C08G2/38 ,  C08G2/08 ,  C08G2/18 ,  C08J9/26

    Abstract: THIS APPLICATION DISCLOSES A PROCESS OF PREPARING A SELFSUPPORTING SHAPED STRUCTRUE WHICH COMPRISES POLYMERIZING A SOLID PHASE MONOMER IN THE PRESENCE OF A FLUID CATALYST. SPECIFICALLY, TRIOXANE IS MIXED WITH A RESINOUS BINDER AND THEN POLYMERIZED IN THE PRESENCE OF BRON FLUORIDE. ALSO DISCLOSED IS THE COPOLYMERIZATION OF TRIOXANE WITH DIEPOXIDES.

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