Polyoxymethylene copolymers, their preparation and use
    92.
    发明申请
    Polyoxymethylene copolymers, their preparation and use 审中-公开
    聚甲醛共聚物,其制备和用途

    公开(公告)号:US20060009616A1

    公开(公告)日:2006-01-12

    申请号:US11226518

    申请日:2005-09-14

    IPC分类号: C08G65/34

    CPC分类号: C08G2/38

    摘要: 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.

    摘要翻译: 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。

    Process for recycling polyarylene sulfides
    97.
    发明授权
    Process for recycling polyarylene sulfides 失效
    回收聚亚芳基硫化物的方法

    公开(公告)号:US6069181A

    公开(公告)日:2000-05-30

    申请号:US296196

    申请日:1999-04-20

    摘要: The present invention relates to a process for obtaining polyarylene sulfide from polyarylene sulfide-containing material. For this purpose, the polyarylene sulfide-containing material is treated with a solvent in which it dissolves, and is subsequently reprecipitated. The invention also relates to the purification of polyarylene sulfide-containing material by separating off extraneous substances, to polyphenylene sulfide particles having a specific surface area of at least 80 m.sup.2 /g and to their use as filter material.

    摘要翻译: 本发明涉及从含聚芳硫醚的材料获得聚芳硫醚的方法。 为此,含聚芳硫醚的材料用其溶解的溶剂处理,随后再沉淀。 本发明还涉及通过将外来物质分离成具有至少80m 2 / g比表面积的聚苯硫醚颗粒并将其用作过滤材料来纯化含聚芳硫醚的材料。

    Process for preparing polymer blends by recycling high-performance
polymers
    99.
    发明授权
    Process for preparing polymer blends by recycling high-performance polymers 失效
    通过回收高性能聚合物制备聚合物共混物的方法

    公开(公告)号:US5994483A

    公开(公告)日:1999-11-30

    申请号:US133126

    申请日:1998-08-12

    摘要: The invention relates to a process for preparing blends of high-performance polymers. The particular features are that at least two single-type polymers are treated with a solvent or a solvent mixture in which the polymers used are soluble, the polymers are thereby dissolved, and are then precipitated in a liquid medium, and recycled material is used for each of the polymeric constituents.

    摘要翻译: 本发明涉及制备高性能聚合物的共混物的方法。 特别的特征是至少两种单一类型的聚合物用溶剂或溶剂混合物处理,其中所用的聚合物是可溶的,聚合物因此溶解,然后在液体介质中沉淀,再循环材料用于 每种聚合物成分。

    Process for the preparation of 2-cyanoethylphosphinic esters
    100.
    发明授权
    Process for the preparation of 2-cyanoethylphosphinic esters 失效
    2-氰基乙基次膦酸酯的制备方法

    公开(公告)号:US5990337A

    公开(公告)日:1999-11-23

    申请号:US921654

    申请日:1997-08-26

    CPC分类号: C07F9/657172 C07F9/3211

    摘要: The invention relates to a process for the preparation of phosphorus-containing compounds of the formula (I) ##STR1## where R.sup.1 and R.sup.2 are identical or different and are a straight-chain or branched alkyl radical having 1 to 8 carbon atoms, a cyclohexyl-, cyclopentyl-, aryl-, halogen-, (C.sub.1 -C.sub.6)-alkyl- or (C.sub.1 -C.sub.6)-alkoxy-substituted aryl radical, where R.sup.1 and R.sup.2, together with the phosphorus atom and the oxygen atom, can also form a ring, in particular an oxaphosphorin ring, which comprises metering acrylonitrile at elevated temperature into a compound of the formula (II) ##STR2## where R.sup.1 and R.sup.2 are as defined above.

    摘要翻译: 本发明涉及一种制备式(I)的含磷化合物的方法,其中R 1和R 2相同或不同,为具有1至8个碳原子的直链或支链烷基,环己基 - 环戊基 - ,芳基 - ,卤素 - ,(C 1 -C 6) - 烷基 - 或(C 1 -C 6) - 烷氧基取代的芳基,其中R 1和R 2与磷原子和氧原子一起也可以形成环, 特别是氧化磷杂环,其包括在升高的温度下将丙烯腈计量为式(II)的化合物,其中R 1和R 2如上所定义。