Process for the preparation of semiordered polyamides-imides
    1.
    发明授权
    Process for the preparation of semiordered polyamides-imides 失效
    制备半导体聚酰胺的方法

    公开(公告)号:US5118778A

    公开(公告)日:1992-06-02

    申请号:US698076

    申请日:1991-05-10

    IPC分类号: C08G18/08 C08G18/34 C08G73/14

    摘要: The present invention relates to a process for obtaining semiordered polyamides-imides.More particularly it consists in performing the polycondensation in two separate stages:1) reaction between a part of an aromatic diisocyanate and all of the trimellitic anhydride in the presence of dimethylalkyleneurea of pH.ltoreq.7 until the intermediate compound has dissolved,2) successive addition of one or more aromatic diacids and of the remainder of the diisocyanate in the dimethylalkyleneurea of pH.ltoreq.7 until the polyamide-imide obtained has dissolved completely.The semiordered polymers thus obtained have a Tg lower than the random polymers, and this makes them easier to convert.

    摘要翻译: 本发明涉及一种获得半定量聚酰胺 - 酰亚胺的方法。 更具体地说,其包括在两个独立的阶段中进行缩聚:1)一部分芳族二异氰酸酯与所有偏苯三酸酐在pH7的二甲基亚烷基脲存在下反应,直到中间体化合物溶解2)连续 在pH7的二甲基亚烷基脲中加入一种或多种芳族二酸和剩余的二异氰酸酯,直到获得的聚酰胺酰亚胺完全溶解。 由此获得的半定量聚合物的Tg低于随机聚合物,这使得它们更易于转化。

    Dispersion-polymerization process using block copolymers
    5.
    发明授权
    Dispersion-polymerization process using block copolymers 失效
    使用嵌段共聚物的分散聚合法

    公开(公告)号:US4026962A

    公开(公告)日:1977-05-31

    申请号:US573836

    申请日:1975-05-02

    CPC分类号: C08F2/24 C08F287/00

    摘要: There is disclosed a process of dispersion-polymerizing vinyl monomers promoted by free-radical catalysts. This process comprises dispersing under stirring in water a block copolymer of the A-B type wherein A represents a lipophilic block and B a hydrophilic block, adding one or more vinyl monomers containing the promoter and heating the mixture with stirring to the desired temperature. This process enables beads or balls of the desired polymer to be obtained having very regular size distribution.

    摘要翻译: 公开了通过自由基催化剂促进的乙烯基单体的分散聚合方法。 该方法包括在水中分散A-B型嵌段共聚物,其中A代表亲油性嵌段,B是亲水嵌段,加入一种或多种含有助催化剂的乙烯基单体,并在搅拌下加热混合物至所需温度。 该方法可以获得具有非常规则尺寸分布的所需聚合物的珠或球。

    Polyphenylene sulphide-based compositions with improved impact strength and process for preparing them
    6.
    发明授权
    Polyphenylene sulphide-based compositions with improved impact strength and process for preparing them 失效
    具有改善冲击强度的聚苯硫醚类组合物及其制备方法

    公开(公告)号:US06849697B2

    公开(公告)日:2005-02-01

    申请号:US10384754

    申请日:2003-03-11

    摘要: Polyphenylene sulphide-based compositions essentially containing 60 to 99.5% by weight of polyphenylene sulphide and 0.5 to 40% by weight of a combination (C) containing a compound (C1) chosen from olefinic elastomers containing epoxy groups and a compound (C2) chosen from crosslinking agents containing functional groups which are reactive towards the epoxy groups of the compound (C1) and are chosen from amino, hydroxyl, carboxyl and carboxylic acid anhydride groups. They are obtained by melt-blending polyphenylene sulphide with each of the compounds (C1) and (C2) of the combination (C) successively and in any order.

    摘要翻译: 基于聚苯硫醚的组合物,其基本上含有60-99.5重量%的聚苯硫醚和0.5-40重量%的含有选自含有环氧基的烯烃弹性体和化合物(C2)的化合物(C1)的组合(C),选自 含有对化合物(C1)的环氧基具有反应性且选自氨基,羟基,羧基和羧酸酐基团的官能团的交联剂。 它们通过将聚苯硫醚与组合(C)的化合物(C1)和(C2)中的每一种相继地和以任何顺序熔融共混获得。

    Polyphenylene sulphide-based compositions with improved impact strength and process for preparing them
    7.
    发明授权
    Polyphenylene sulphide-based compositions with improved impact strength and process for preparing them 失效
    具有改善冲击强度的聚苯硫醚类组合物及其制备方法

    公开(公告)号:US06699946B1

    公开(公告)日:2004-03-02

    申请号:US08327882

    申请日:1994-10-24

    IPC分类号: C08F28300

    摘要: Polyphenylene sulphide-based compositions essentially containing 60 to 99.5% by weight of polyphenylene sulphide and 0.5 to 40% by weight of a combination (C) containing a compound (C1) chosen from olefinic elastomers containing epoxy groups and a compound (C2) chosen from crosslinking agents containing functional groups which are reactive towards the epoxy groups of the compound (C1) and are chosen from amino, hydroxyl, carboxyl and carboxylic acid anhydride groups. They are obtained by melt-blending polyphenylene sulphide with each of the compounds (C1) and (C2) of the combination (C) successively and in any order.

    摘要翻译: 基于聚苯硫醚的组合物,其基本上含有60-99.5重量%的聚苯硫醚和0.5-40重量%的含有选自含有环氧基的烯烃弹性体和化合物(C2)的化合物(C1)的组合(C),选自 含有对化合物(C1)的环氧基具有反应性且选自氨基,羟基,羧基和羧酸酐基团的官能团的交联剂。 它们通过将聚苯硫醚与组合(C)的化合物(C1)和(C2)中的每一种相继地和以任何顺序熔融共混获得。

    Composition based on propylene polymer process for obtaining it and its
use
    9.
    发明授权
    Composition based on propylene polymer process for obtaining it and its use 失效
    基于丙烯聚合物工艺获得组合物及其用途

    公开(公告)号:US5569717A

    公开(公告)日:1996-10-29

    申请号:US463105

    申请日:1995-06-05

    摘要: Composition based on propylene polymer obtained by melt-blending of:35 to 98.98% by weight of a polymer (a) chosen from propylene homopolymers and propylene copolymers containing at least 50 mol % of propylene,1 to 50% by weight of a polymer (b) chosen from ethylene homopolymers and ethylene copolymers containing at least 90 mol % of ethylene, withfrom 0.01 to 10% by weight of a functional compound (c) chosen from compounds including at least 3 acrylate groups;from 0.01 to 5% by weight of a compound (d) capable of generating free radicals.

    摘要翻译: 通过熔融共混获得的丙烯聚合物的组合物:35至98.98重量%的选自丙烯均聚物和丙烯共聚物的聚合物(a),其含有至少50摩尔%的丙烯,1至50重量%的聚合物( b)选自含有至少90mol%乙烯的乙烯均聚物和乙烯共聚物,和0.01至10重量%的选自包含至少3个丙烯酸酯基团的化合物的官能化合物(c); 0.01至5重量%的能够产生自由基的化合物(d)。