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    Method for preparing polyimide and polyimide prepared thereby
    5.
    发明授权
    Method for preparing polyimide and polyimide prepared thereby 有权
    由此制备聚酰亚胺和聚酰亚胺的方法

    公开(公告)号：US07053168B2

    公开(公告)日：2006-05-30

    申请号：US10683226

    申请日：2003-10-10

    申请人： Norberto Silvi ,  Mark Howard Giammattei ,  Paul Edward Howson ,  Farid Fouad Khouri

    发明人： Norberto Silvi ,  Mark Howard Giammattei ,  Paul Edward Howson ,  Farid Fouad Khouri

    IPC分类号： C08G73/00 ,  C08F6/00 ,  C08L79/00

    CPC分类号： C08G73/1028 ,  C08G73/1032

    摘要： A method for preparing a polyimide includes introducing a mixture of an oligomer and a solvent to an extruder, removing solvent via at least one extruder vent, and melt kneading the oligomer to form a polyimide. The polyimide has a low residual solvent content. The method is faster than solution polymerization of polyimides, and it avoids the stoichiometric inaccuracies associated with reactive extrusion processes that use monomers as starting materials.

    摘要翻译： 制备聚酰亚胺的方法包括将低聚物和溶剂的混合物引入挤出机中，通过至少一个挤出机出口除去溶剂，并熔融捏合低聚物以形成聚酰亚胺。 聚酰亚胺的残留溶剂含量低。 该方法比聚酰亚胺的溶液聚合更快，并且避免了使用单体作为起始原料的反应挤出方法的化学计量不准确性。

    Method for preparing sterically hindered phosphoramidates
    7.
    发明授权
    Method for preparing sterically hindered phosphoramidates 有权
    空间位阻氨基磷酸酯的制备方法

    公开(公告)号：US06291700B1

    公开(公告)日：2001-09-18

    申请号：US09538882

    申请日：2000-03-30

    申请人： James Anthony Cella ,  John Robert Campbell ,  Paul Edward Howson

    发明人： James Anthony Cella ,  John Robert Campbell ,  Paul Edward Howson

    IPC分类号： C07F908

    CPC分类号： C07F9/2458

    摘要： Sterically hindered phosphoramidates such as N,N′-bis[di-(2,6-xylyl)phosphoryl]piperazine are prepared by the reaction of a sterically hindered diaryl chlorophosphate, such as di-(2,6-xylyl) chlorophosphate, with a basic nitrogen compound containing at least two basic N—H groups, preferably a heterocyclic compound such as piperazine, in the presence of an acid acceptor such as triethylamine. The reaction is conducted in methylene chloride or an aromatic hydrocarbon such as toluene as solvent. If an aromatic hydrocarbon is employed, there is also present at least one dipolar aprotic nitrogen compound, such as 4-dimethylaminopyridine, in an amount effective to increase the reaction rate.

    摘要翻译： 通过空间位阻的二芳基氯磷酸酯如二（2,6-二甲苯基）氯磷酸酯与二（2,6-二甲苯基）磷酸二磷酸酯的反应与N，N'-双[二（2,6-二甲苯基）磷酰基]哌嗪 在酸受体如三乙胺的存在下，含有至少两个碱性NH基团，优选杂环化合物如哌嗪的碱性氮化合物。 该反应在二氯甲烷或芳族烃如甲苯中作为溶剂进行。 如果使用芳族烃，则还存在有效提高反应速率的量的至少一种偶极非质子氮化合物，如4-二甲基氨基吡啶。

    Method for preparing polyether polymers of predetermined molecular
    8.
    发明授权
    Method for preparing polyether polymers of predetermined molecular 有权
    制备预定分子的聚醚聚合物的方法

    公开(公告)号：US06265521B1

    公开(公告)日：2001-07-24

    申请号：US09632675

    申请日：2000-08-07

    申请人： Thomas Joseph Fyvie ,  Peter David Phelps ,  Paul Edward Howson ,  Donald Frank Rohr ,  Ganesh Kailasam ,  Elliott West Shanklin

    发明人： Thomas Joseph Fyvie ,  Peter David Phelps ,  Paul Edward Howson ,  Donald Frank Rohr ,  Ganesh Kailasam ,  Elliott West Shanklin

    IPC分类号： C08G7310

    CPC分类号： C08G73/12

    摘要： Polyether polymers such as polyetherimides are prepared by a two-step reaction. The first step is the reaction between an alkali metal salt of a dihydroxy-substituted aromatic hydrocarbon, such as bisphenol A disodium salt, and a substituted aromatic compound such as 1,3-bis[N-(4-chlorophthalimido)]benzene, the alkali metal salt being employed in an amount less than stoichiometric. The intermediate low molecular weight polymer thus produced then undergoes reaction with additional alkali metal salt. By this method, a polyether polymer of closely controlled molecular weight can be conveniently prepared.

    摘要翻译： 聚醚聚合物如聚醚酰亚胺通过两步反应制备。 第一步是二羟基取代的芳族烃如双酚A二钠盐的碱金属盐与1,3-双[N-（4-氯苯二酰亚氨基）]苯等取代的芳香族化合物的反应， 碱金属盐的用量小于化学计量。 由此制备的中间体低分子量聚合物随后与另外的碱金属盐反应。 通过这种方法，可以方便地制备密度受控分子量的聚醚聚合物。

    Slurry preparation of bis (halophthalimides) and of polyether polymers
    9.
    发明授权
    Slurry preparation of bis (halophthalimides) and of polyether polymers 失效
    双（卤代邻苯二酰亚胺）和聚醚聚合物的浆料制备

    公开(公告)号：US06235866B1

    公开(公告)日：2001-05-22

    申请号：US09413376

    申请日：1999-10-06

    申请人： Farid Fouad Khouri ,  Ganesh Kailasam ,  Joseph John Caringi ,  Peter David Phelps ,  Paul Edward Howson

    发明人： Farid Fouad Khouri ,  Ganesh Kailasam ,  Joseph John Caringi ,  Peter David Phelps ,  Paul Edward Howson

    IPC分类号： C08G802

    CPC分类号： C07D209/48 ,  C08G65/4037 ,  C08G65/405 ,  C08G65/4093 ,  C08G73/12 ,  C08G75/23

    摘要： Bis(halophthalimides) such as, 3-bis[N-(4-chlorophthalimido)]benzene are prepared in slurry in an organic liquid such as o-dichlorobenzene or anisole, by a reaction at a temperature of at least 150° C. between at least one diamino compound, preferably an aromatic diamine such as m- or p-phenylenediamine, and at least one halophthalic anhydride such as 4-chlorophthalic anhydride, in the presence of an imidization catalyst such as sodium phenylphosphinate. The solids content of the reaction mixture is at least about 5% and preferably at least about 12% by weight. The product slurry may be employed directly in the preparation of polyetherimides, and similar slurries may be employed to prepare other polyether polymers.

    摘要翻译： 通过在至少150℃的温度下，在有机液体如邻二氯苯或苯甲醚中的浆料中制备双（卤代邻苯二酰亚胺）如3-双[N-（4-氯邻苯二甲酰亚氨基） 至少一种二氨基化合物，优选芳族二胺如间苯二胺或对苯二胺，以及至少一种卤代邻苯二甲酸酐如4-氯邻苯二甲酸酐在酰亚胺化催化剂如苯基次膦酸钠存在下进行。 反应混合物的固体含量为至少约5％，优选至少约12％重量。 产物浆料可以直接用于制备聚醚酰亚胺，并且可以使用类似的浆料来制备其它聚醚聚合物。