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    Interfacial method of preparing ester-substituted diaryl carbonates
    3.
    发明授权
    Interfacial method of preparing ester-substituted diaryl carbonates 有权
    制备酯取代的碳酸二芳基酯的界面方法

    公开(公告)号：US06420588B1

    公开(公告)日：2002-07-16

    申请号：US09911440

    申请日：2001-07-24

    申请人： Patrick Joseph McCloskey ,  Timothy Brydon Burnell ,  Daniel Joseph Brunelle ,  Elliott West Shanklin ,  Paul Michael Smigelski, Jr. ,  Ganesh Kailasam

    发明人： Patrick Joseph McCloskey ,  Timothy Brydon Burnell ,  Daniel Joseph Brunelle ,  Elliott West Shanklin ,  Paul Michael Smigelski, Jr. ,  Ganesh Kailasam

    IPC分类号： C07C6996

    CPC分类号： C07C68/02 ,  C07C69/96

    摘要： High yields of ester-substituted diary carbonates such as bis-methyl salicyl carbonate were obtained by the condensation of methyl salicylate with phosgene in the presence of a phase transfer catalyst (PTC) in an interfacial reaction system in which the pH of the aqueous phase was greater than 9.3. Using the method of the present invention conversions of greater than 99% were obtained whereas under standard conditions using triethylamine as the catalyst conversions were limited to 70-75% of the methyl salicylate starting material even with a 20 mole % excess of added phosgene. The optimized conditions of the of the present invention use only a slight excess of phosgene and represent an attractive route for the manufacture of bis methyl salicyl carbonate and ester-substituted diaryl carbonates generally.

    摘要翻译： 通过在界面反应体系中存在相转移催化剂（PTC）的情况下，通过水杨酸甲酯与光气的缩合得到高产率的酯取代的二元碳酸酯，其中水相的pH为 大于9.3。 使用本发明的方法获得大于99％的转化率，而在使用三乙胺的标准条件下，即使使用20摩尔％过量的加入的光气，催化剂转化率也限于水杨酸甲酯起始原料的70-75％。 本发明的优化条件仅使用轻微过量的光气，并且代表通常用于制造碳酸双甲基水杨酸酯和酯取代的二芳基碳酸酯的有吸引力的途径。

    Phase transfer catalyzed method for preparation of polyetherimides
    4.
    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

    申请人： Daniel Joseph Brunelle ,  Havva Yagci Acar ,  Farid Fouad Khouri ,  Thomas Link Guggenheim ,  David Winfield Woodruff ,  Norman Enoch Johnson

    发明人： Daniel Joseph Brunelle ,  Havva Yagci Acar ,  Farid Fouad Khouri ,  Thomas Link Guggenheim ,  David Winfield Woodruff ,  Norman Enoch Johnson

    IPC分类号： C08G73/00 ,  C08G73/10 ,  C08G8/02 ,  C08G14/00

    CPC分类号： C08G73/12 ,  C08G73/121 ,  C08G73/124

    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。

    Method of polycarbonate preparation
    6.
    发明授权
    Method of polycarbonate preparation 有权

    公开(公告)号：US06576739B2

    公开(公告)日：2003-06-10

    申请号：US09735871

    申请日：2000-12-14

    申请人： Peter David Phelps ,  Elliott West Shanklin ,  Daniel Joseph Brunelle

    发明人： Peter David Phelps ,  Elliott West Shanklin ,  Daniel Joseph Brunelle

    IPC分类号： C08G6400

    CPC分类号： C08G64/24 ,  C07C68/02 ,  C07C69/96

    摘要： High molecular weight polycarbonates are prepared from hindered bisphenols in a reaction sequence involving conversion of the hindered bisphenol to the corresponding bischloroformate and subsequent treatment with an amine catalyst and aqueous base to effect polymerization by hydrolysis and condensation of the bischloroformate groups. Tertiary aliphatic and cycloaliphatic amine catalysts bearing at least one methyl group are found to be especially effective in promoting this polymerization reaction. Reaction rates and selectivities are shown to be superior to known methods employing tertiary amines lacking methyl groups attached to nitrogen, such as triethylamine. The inclusion of chain stoppers allows the preparation of well defined mixtures of polycarbonate oligomers from hindered bisphenols. Additionally, the methodology may be used to prepare symmetrical diaryl carbonates from hindered phenols.

    Continuous preparation of polycarbonate
    7.
    发明授权
    Continuous preparation of polycarbonate 有权

    公开(公告)号：US06562937B2

    公开(公告)日：2003-05-13

    申请号：US09795180

    申请日：2001-03-01

    申请人： James Manio Silva ,  David Michel Dardaris ,  Thomas Joseph Fyvie ,  Daniel Joseph Brunelle

    发明人： James Manio Silva ,  David Michel Dardaris ,  Thomas Joseph Fyvie ,  Daniel Joseph Brunelle

    IPC分类号： C08H6368

    CPC分类号： C08G64/24

    摘要： In a continuous flow reactor one or more bisphenols is converted by the action of phosgene and aqueous base into a mixture of mono- and bisphenol chloroformates which are then treated with a catalyst, additional aqueous caustic and a monophenol to afford endcapped polycarbonates. At relatively high levels of added monophenol endcapped polycarbonate oligomers are obtained. The method is especially suited for the continuous preparation of endcapped oligomers of tetrabromobisphenol A polycarbonate. The method is characterized by efficient use of phosgene, and conversion of chloroformate groups to carbonate linkages aided by trialkylamine catalysts bearing at least one methyl group on nitrogen, such as N,N-dimethylbutylamine (DMBA).