Phase transfer catalyzed method for preparation of polyetherimides
    6.
    发明授权
    Phase transfer catalyzed method for preparation of polyetherimides 有权
    相转移催化聚醚酰亚胺的制备方法

    公开(公告)号:US07714095B2

    公开(公告)日:2010-05-11

    申请号:US11363681

    申请日:2006-02-28

    摘要: Polyether polymers, such as polyetherimides, are prepared by the reaction of a dihydroxy-substituted aromatic hydrocarbon alkali metal salt, such as bisphenol A disodium salt, with a bis(N-(chlorophthalimido))aromatic compound, such as 1,3- and/or 1,4-bis(N-(4-chlorophthalimido))benzene, in a solvent such as o-dichlorobenzene and in the presence of a phase transfer catalyst such as a hexaalkylguanidinium chloride. Several embodiments may be employed to improve the method. They comprise employing substantially dry reagents, employing a high solids level in solvent, beginning with an excess of bis(N-(chlorophthalimido))-aromatic compound and incrementally adding alkali metal salt, employing alkali metal salt of small particle size, and using reagents of high purity.

    摘要翻译: 聚醚聚合物如聚醚酰亚胺通过二羟基取代的芳族烃碱金属盐如双酚A二钠盐与双(N-(氯代邻苯二甲酰亚胺基))芳族化合物如1,3-和 /或1,4-双(N-(4-氯邻苯二甲酰亚氨基))苯,在溶剂如邻二氯苯中,并在相转移催化剂如六烷基氯化the存在下进行。 可以采用几个实施例来改进该方法。 它们包括使用基本上干的试剂,在溶剂中使用高固体含量,从过量的双(N-(氯代邻苯二甲酰亚胺基)) - 芳族化合物开始,并逐渐加入碱金属盐,使用小粒径的碱金属盐,并使用试剂 的高纯度。

    Phase transfer catalyzed method for prepared oxybisphthalic compounds
    7.
    发明授权
    Phase transfer catalyzed method for prepared oxybisphthalic compounds 有权
    相转移催化方法制备的含氧双苯二甲酸酯化合物

    公开(公告)号:US6028203A

    公开(公告)日:2000-02-22

    申请号:US210707

    申请日:1998-12-14

    CPC分类号: C07D307/89

    摘要: Oxybisphthalic compounds such as 4,4'-oxybis(N-methylphthalimide) and 4,4'-oxybis(phthalic anhydride) are prepared from the corresponding nitro- or halo-substituted phthalic compounds by reaction with an alkanoate or carbonate salt in a non-polar solvent and in the presence of a hexaalkylguanidinium salt as phase transfer catalyst. A carboxylic acid such as 4-chlorobenzoic acid may be used as an additional catalyst. Reaction rates and yields are higher than with other phase transfer catalysts.

    摘要翻译: 由相应的硝基 - 或卤素取代的邻苯二甲酸化合物通过与非酸性的烷基酯或碳酸盐反应制备4,4'-氧双(4-甲基邻苯二甲酰亚胺)和4,4'-氧双(邻苯二甲酸酐) 在六烷基胍鎓盐作为相转移催化剂存在下进行。 可以使用羧酸如4-氯苯甲酸作为另外的催化剂。 反应速率和产率高于其他相转移催化剂。

    Polyetherimide compositions, methods of manufacture, and articles formed therefrom
    9.
    发明授权
    Polyetherimide compositions, methods of manufacture, and articles formed therefrom 有权
    聚醚酰亚胺组合物,制造方法和由其形成的制品

    公开(公告)号:US09127127B2

    公开(公告)日:2015-09-08

    申请号:US13649443

    申请日:2012-10-11

    IPC分类号: C08G73/10

    摘要: A method for the manufacture of a polyetherimide composition includes catalyzing the reaction of a dianhydride and an organic diamine with a catalyst selected from guanadinium salts, pyridinium salts, imidazolium salts, tetra(C6-24)aryl ammonium salts, tetra(C7-24 arylalkylene) ammonium salts, dialkyl heterocycloaliphatic ammonium salts, bis-alkyl quaternary ammonium salts, (C7-24arylalkylene)(C1-16alkyl) phosphonium salts, (C6-24aryl)(C1-16alkyl)phosphonium salts, phosphazenium salts and combinations thereof, optionally in the presence of a solvent.

    摘要翻译: 制备聚醚酰亚胺组合物的方法包括用选自胍盐,吡啶鎓盐,咪唑鎓盐,四(C 6-24)芳基铵盐,四(C 7-24芳基亚烷基)烷基的催化剂催化二酐和有机二胺的反应 )铵盐,二烷基杂环脂族铵盐,双烷基季铵盐,(C 7-24芳基亚烷基)(C 1-6烷基)鏻盐,(C 6-24芳基)(C 1-6烷基)鏻盐,磷氮烯基鏻盐及其组合, 溶剂的存在。