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    Interfacial method of preparing ester-substituted diaryl carbonates
    2.
    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。

    Method of making block copolymers by solid state polymerization
    5.
    发明授权
    Method of making block copolymers by solid state polymerization 有权
    通过固态聚合制备嵌段共聚物的方法

    公开(公告)号：US06960641B2

    公开(公告)日：2005-11-01

    申请号：US10743241

    申请日：2003-12-22

    申请人： Gregory Allen O'Neil ,  James Day ,  Daniel Joseph Brunelle ,  Joseph Anthony Suriano ,  Patrick Joseph McCloskey ,  Paul Michael Smigelski, Jr.

    发明人： Gregory Allen O'Neil ,  James Day ,  Daniel Joseph Brunelle ,  Joseph Anthony Suriano ,  Patrick Joseph McCloskey ,  Paul Michael Smigelski, Jr.

    IPC分类号： C08G81/00 ,  C08G63/64 ,  C08G63/80 ,  C08G64/00

    CPC分类号： C08G63/64 ,  C08G63/80

    摘要： A method of preparing block copolymers by solid state polymerization is described. A mixture of a partially crystalline polycarbonate having activated terminal aryloxy groups, for example terminal methyl salicyl groups, when heated together with an oligomeric polyester having reactive terminal hydroxy groups under solid state polymerization conditions affords block copolymers. The activated terminal aryloxy groups play a key role in preserving the block lengths of the starting materials. A control sample in which the partially crystalline polycarbonate lacks activated terminal aryloxy groups, for example polycarbonates substituted by phenol, affords a much lower molecular weight, more highly randomized copolymer product. The product block copolymers are useful as “weatherable” plastic materials.

    摘要翻译： 描述了通过固态聚合制备嵌段共聚物的方法。 当在固态聚合条件下与具有反应性末端羟基的低聚聚酯一起加热时，具有活化的末端芳氧基的部分结晶的聚碳酸酯，例如末端甲基水杨酸酯的混合物得到嵌段共聚物。 活化的末端芳氧基在保留原料的块长度方面起关键作用。 其中部分结晶聚碳酸酯缺乏活化的末端芳氧基的对照样品，例如被苯酚取代的聚碳酸酯，得到低得多的分子量，更高度随机的共聚物产物。 产品嵌段共聚物可用作“耐候性”塑料材料。

    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.