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    Polycarbonates suitable for use in optical article
    2.
    发明授权
    Polycarbonates suitable for use in optical article 失效
    聚碳酸酯适用于光学制品

    公开(公告)号：US06248859B1

    公开(公告)日：2001-06-19

    申请号：US09347559

    申请日：1999-07-06

    申请人： Andrew James Caruso ,  Gary Charles Davis ,  Marc Brian Wisnudel ,  Ramesh Hariharan

    发明人： Andrew James Caruso ,  Gary Charles Davis ,  Marc Brian Wisnudel ,  Ramesh Hariharan

    IPC分类号： C08G6400

    CPC分类号： C08G64/06 ,  G11B7/2534

    摘要： The invention relates to polycarbonates comprising: (a) carbonate structural units corresponding to structure (I) where R1, R2, R3, and R4 are independently selected from the group consisting of C1-C6 alkyl, R5 is C1-C3 alkyl and n is 0, 1 or 2, and (b) carbonate structural units corresponding to structure (II):  where R6, R7, R10 and R11 are independently C1-C6 alkyl, R8 and R9 are independently H or C1-C5 alkyl, R12 is H or C1-C3 alkyl and n is 0, 1 or 2; where the polycarbonate has a glass transition temperature of from about 120° C. to about 185° C. and a water absorption of less than about 0.33%. This invention further relates to method of making these polycarbonates, optical articles made from these polycarbonates, and methods of making optical articles from these polycarbonates.

    摘要翻译： 本发明涉及聚碳酸酯，其包含：（a）对应于结构（I）的碳酸酯结构单元，其中R 1，R 2，R 3和R 4独立地选自C 1 -C 6烷基，R 5是C 1 -C 3烷基，n是 0,1或2，和（b）对应于结构（II）的碳酸酯结构单元：其中R 6，R 7，R 10和R 11独立地是C 1 -C 6烷基，R 8和R 9独立地是H或C 1 -C 5烷基，R 12是H或 C1-C3烷基，n为0,1或2;其中聚碳酸酯的玻璃化转变温度为约120℃至约185℃，吸水率小于约0.33％。本发明还涉及 制造这些聚碳酸酯的方法，由这些聚碳酸酯制成的光学制品，以及由这些聚碳酸酯制造光学制品的方法。

    Method for depolymerizing polyimides and recovering reagents therefrom
    4.
    发明授权
    Method for depolymerizing polyimides and recovering reagents therefrom 失效
    解聚聚酰亚胺和从中回收试剂的方法

    公开(公告)号：US5721280A

    公开(公告)日：1998-02-24

    申请号：US726962

    申请日：1996-10-07

    申请人： Joseph Richard Wetzel ,  Andrew James Caruso

    发明人： Joseph Richard Wetzel ,  Andrew James Caruso

    IPC分类号： C07C51/00 ,  C08J11/08

    CPC分类号： C07C51/00 ,  Y02P20/582

    摘要： Polyimides, especially thermoset polyimides such as those prepared by the reaction of p-phenylenediamine with 4,4'-hexafluoroisopropylidenebis(phthalic anhydride) and nadic ester, are converted to monomers which may be recycled for polyimide synthesis by heating with a solution of an alkali metal hydroxide, such as lithium hydroxide or sodium hydroxide, in a dipolar aprotic solvent such as N-methylpyrrolidone. The products are the diamine and the tetracarboxylic acid alkali metal salt corresponding to the dianhydride.

    摘要翻译： 聚酰亚胺，特别是热固性聚酰亚胺，例如通过对苯二胺与4,4'-六氟异亚丙基双（邻苯二甲酸酐）和萘二酸酯的反应制备的那些，可以转化为单体，其可以通过用碱溶液加热再循环用于聚酰亚胺合成 金属氢氧化物，如氢氧化锂或氢氧化钠，在偶极非质子溶剂如N-甲基吡咯烷酮中。 产物是二胺和对应于二酐的四羧酸碱金属盐。

    ESTIMATION OF RESERVOIR PERMEABILITY
    8.
    发明申请
    ESTIMATION OF RESERVOIR PERMEABILITY 审中-公开
    储层渗透性的估计

    公开(公告)号：US20110167896A1

    公开(公告)日：2011-07-14

    申请号：US12685324

    申请日：2010-01-11

    申请人： John Erik Hershey ,  Mark Lewis Grabb ,  Andrew James Caruso

    发明人： John Erik Hershey ,  Mark Lewis Grabb ,  Andrew James Caruso

    IPC分类号： G01N15/08

    CPC分类号： E21B47/1015

    摘要： A method for determining the permeability of a petroliferous reservoir comprising injecting a tagged organic molecule into the reservoir at a first location, and detecting a signal associated with tagged organic molecule at a second location in the reservoir, wherein the tagged organic molecule comprises a radionuclide having a half-life of less than a month. In certain embodiments, the tagged organic molecule comprises a radionuclide selected from the group consisting of iodine-131 and fluorine-18.

    摘要翻译： 一种用于确定含油气储层的渗透性的方法，包括在第一位置将标记的有机分子注入所述储存器，以及在所述储存器的第二位置检测与标记的有机分子相关的信号，其中所述标记的有机分子包含具有 半衰期不到一个月。 在某些实施方案中，标记的有机分子包含选自碘-131和氟-18的放射性核素。

    Method for enhancing crystallinity of polycarbonates
    9.
    发明授权
    Method for enhancing crystallinity of polycarbonates 失效
    提高聚碳酸酯结晶度的方法

    公开(公告)号：US6031063A

    公开(公告)日：2000-02-29

    申请号：US370434

    申请日：1999-08-09

    申请人： James Day ,  Bhaskar Bhairavnath Idage ,  Andrew James Caruso

    发明人： James Day ,  Bhaskar Bhairavnath Idage ,  Andrew James Caruso

    IPC分类号： C08G64/20 ,  C08G64/00

    CPC分类号： C08G64/20

    摘要： The crystallinity of an amorphous precursor polycarbonate is enhanced by contact in the liquid or vapor state with a non-solvent which may be water, an alkanol or a mixture thereof and which is dialkyl carbonate-free. Contact temperatures are at least about 75.degree. C. and are further defined by the relationshipT.sub.c .gtoreq.T.sub.b -z,wherein T.sub.c is the contact temperature, T.sub.b is the boiling point of the non-solvent at the contact pressure employed (both in degrees C.) and z is a constant whose value is 60.

    摘要翻译： 无定形前体聚碳酸酯的结晶度通过在液体或蒸汽状态下与非溶剂（其可以是水，链烷醇或其混合物）接触而提高，并且是无碳酸二烷基酯。 接触温度至少约为75℃，并且进一步由关系式T> = Tb-z定义，其中Tc是接触温度，Tb是所用接触压力下非溶剂的沸点（均以度数计） C），z是值为60的常数。