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25 条记录 (耗时 0.033 秒)

    Process for the preparation of salts of 4-hydroxystyrene
    12.
    发明授权
    Process for the preparation of salts of 4-hydroxystyrene 失效
    制备4-羟基苯乙烯盐的方法

    公开(公告)号：US5304690A

    公开(公告)日：1994-04-19

    申请号：US80897

    申请日：1993-06-22

    申请人： George Kvakovszky ,  James H. Rea ,  Michael I. Sheehan ,  Brad L. Smith

    发明人： George Kvakovszky ,  James H. Rea ,  Michael I. Sheehan ,  Brad L. Smith

    IPC分类号： C07C37/64 ,  C07C39/235 ,  C07C68/06 ,  C07C39/20 ,  C07C69/96

    CPC分类号： C07C37/64 ,  C07C68/06

    摘要： 4-Acetoxystyrene is reacted with a base in a solvent to form a salt of 4-hydroxystyrene via saponification. Alternatively, 4-hydroxystyrene is reacted with a base to form a salt of 4-hydroxystyrene. In the latter case, the 4-hydroxystyrene is prepared by the transesterification of 4-acetoxystyrene. Subsequently or simultaneously, the salt of 4-hydroxystyrene is reacted, preferably in situ, with di-tertiary-butyl-dicarbonate to form 4-tertiarybutoxycarbonyloxystyrene.

    摘要翻译： 4-乙酰氧基苯乙烯与溶剂中的碱反应，通过皂化形成4-羟基苯乙烯的盐。 或者，4-羟基苯乙烯与碱反应形成4-羟基苯乙烯的盐。 在后一种情况下，4-羟基苯乙烯通过4-乙酰氧基苯乙烯的酯交换反应来制备。 随后或同时，4-羟基苯乙烯的盐优选原位与二碳酸二叔丁酯反应，形成4-叔丁氧羰基氧基苯乙烯。

    Process and products of purification of anhydrosugar alcohols
    16.
    发明授权
    Process and products of purification of anhydrosugar alcohols 有权
    脱氢葡萄糖醇的纯化方法和产物

    公开(公告)号：US06670033B1

    公开(公告)日：2003-12-30

    申请号：US09857574

    申请日：2001-11-27

    申请人： Michael A. Hubbard ,  Michael Wohlers ,  Helmut B. Witteler ,  Edward G. Zey ,  George Kvakovszky ,  Thomas H. Shockley ,  Larry F. Charbonneau ,  Norbert Kohle ,  Jochen Rieth

    发明人： Michael A. Hubbard ,  Michael Wohlers ,  Helmut B. Witteler ,  Edward G. Zey ,  George Kvakovszky ,  Thomas H. Shockley ,  Larry F. Charbonneau ,  Norbert Kohle ,  Jochen Rieth

    IPC分类号： D02G300

    CPC分类号： C08G63/672 ,  Y10T428/29 ,  Y10T428/2913

    摘要： A process for the formation of a purified anhydrosugar alcohol is disclosed, whereby the resultant purified anhydrosugar alcohol has a purity of at least 99.8% and is substantially colorless. The anhydrosugar alcohol is purified by distillation, recrystallization from methanol, ethanol or ethylene glycol, melt recrystallization, or a combination thereof. Preferably, the purification is by distillation followed by recrystallization from methanol, ethanol or ethylene glycol. A test for determining the purity of the anhydrosugar alcohol is disclosed, wherein the color of the anhydrosugar alcohol after annealing at a temperature of at least 260° C. for at least four hours is examined. Alternatively, purity can be determined by examination of ultraviolet (UV) transmittance of the purified anhydrosugar alcohol at various wavelengths. The purified anhydrosugar alcohol may be incorporated into a polymer such as a polyester, which may in turn be used to form such articles of manufacturing as containers, optical disks, fibers, sheets and films.

    摘要翻译： 公开了形成纯化的脱水葡萄糖醇的方法，由此得到的纯化的脱水葡萄糖醇的纯度至少为99.8％，基本上是无色的。 通过蒸馏纯化脱水葡萄糖醇，从甲醇，乙醇或乙二醇中重结晶，熔融重结晶或其组合。 优选地，通过蒸馏进行纯化，然后从甲醇，乙醇或乙二醇中重结晶。 公开了用于测定脱水葡萄糖醇纯度的试验，其中在至少260℃的温度下退火至少4小时后的脱水葡萄糖醇的颜色被检查。 或者，可以通过检查各种波长的纯化的脱水葡萄糖醇的紫外线（UV）透射率来确定纯度。 纯化的脱水葡萄糖醇可以掺入聚合物如聚酯中，聚酯可以依次用于形成容器，光盘，纤维，片和薄膜等制造品。

    Process for the preparation of bisarylalkyl ethers
    18.
    发明授权
    Process for the preparation of bisarylalkyl ethers 失效
    二芳基烷基醚的制备方法

    公开(公告)号：US5210278A

    公开(公告)日：1993-05-11

    申请号：US934995

    申请日：1992-08-25

    申请人： Mohammad Aslam ,  Brad L. Smith ,  George Kvakovszky

    发明人： Mohammad Aslam ,  Brad L. Smith ,  George Kvakovszky

    IPC分类号： C07C67/297

    CPC分类号： C07C67/297

    摘要： A process for preparing a substituted styrene by reacting a bisarylalkyl ether in the presence of an acid catalyst is disclosed. The process is preferably used for the preparation of 4-acetoxystyrene from 4,4'-(oxydiethylidene)bisphenol diacetate and 4-methoxystyrene from 4,4'-(oxydiethylidene)bisphenol dimethyl ether. A process for preparing a bisarylalkyl ether by reacting a corresponding arylalkanol in the presence of an acid catalyst is also disclosed.

    摘要翻译： 公开了一种在酸催化剂存在下使双芳基烷基醚反应制备取代苯乙烯的方法。 该方法优选用于从4,4' - （氧基二亚乙基）双酚二乙酸酯和来自4,4'-（氧基二亚乙基）双酚二甲醚的4-甲氧基苯乙烯制备4-乙酰氧基苯乙烯。 还公开了通过在酸催化剂的存在下使相应的芳基烷醇反应来制备双芳基烷基醚的方法。

    Methods for stripping paint with DMSO containing compositions
    19.
    发明授权
    Methods for stripping paint with DMSO containing compositions 失效
    用含有DMSO的组合物剥离涂料的方法

    公开(公告)号：US06673157B1

    公开(公告)日：2004-01-06

    申请号：US09512162

    申请日：2000-02-24

    申请人： Artie S. McKim ,  George Kvakovszky ,  James E. Schmidheiser

    发明人： Artie S. McKim ,  George Kvakovszky ,  James E. Schmidheiser

    IPC分类号： B08B304

    CPC分类号： C09D9/005

    摘要： The invention relates to a method for stripping paint from surfaces, comprising: a) contacting a painted surface with a paint stripping composition, and b) separating at least some of the paint contacted with the paint stripping composition from the painted surface; c) wherein the paint stripping composition comprises: i) from about 60 to about 99% by volume of one or more environmentally acceptable esters selected from the group consisting of t-butyl acetate, a carboxylic acid methyl ester having a caboxylate residue of at least three carbon atoms, an ester of lactic acid, an ester of oxalic acid having two alkoxy residues wherein each alkoxy residue has at least three carbon atoms, diethyl tartrate, triethyl citrate, tributyl citrate, and one or more sugar esters; and ii) dimethyl sulfoxide which is present in an amount from about 1 to about 40% by volume of the composition.

    摘要翻译： 本发明涉及一种用于从表面剥离涂料的方法，其包括：a）使涂漆表面与涂漆组合物接触，和b）将至少部分与涂料剥离组合物接触的涂料与涂漆表面分离; c）其中 涂漆组合物包含：i）约60-约99体积％的一种或多种选自乙酸叔丁酯，具有至少三个碳原子的甲氧羰基化物残基的羧酸甲酯， 乳酸酯，具有两个烷氧基残基的草酸酯，其中每个烷氧基残基具有至少三个碳原子，酒石酸二乙酯，柠檬酸三乙酯，柠檬酸三丁酯和一种或多种糖酯; 和ii）二甲基亚砜，其存在量为组合物的约1至约40体积％。

    Methods for enhanced aromatic extraction employing sulfone-sulfoxide compositions
    20.
    发明授权
    Methods for enhanced aromatic extraction employing sulfone-sulfoxide compositions 失效
    使用砜 - 亚砜组合物增强芳香族萃取的方法

    公开(公告)号：US06660899B2

    公开(公告)日：2003-12-09

    申请号：US09783705

    申请日：2001-02-14

    申请人： Artie S. McKim ,  George Kvakovszky ,  Michael D. Donahue

    发明人： Artie S. McKim ,  George Kvakovszky ,  Michael D. Donahue

    IPC分类号： C07C717

    CPC分类号： C10G7/08 ,  C07C7/08

    摘要： The invention relates to a distillation process composition at least partially separating mixtures of aromatic and non-aromatic hydrocarbon compounds employing an extractive distillation composition comprising: a. at least one organic sulfoxide of the formula R1—SO—R2, and b. at least one acrylic sulfone of the formula R3—SO2—R4  wherein R1, R2, R3, and R4 have at least one carbon atom and can be the same or different, and  wherein the at least one organic sulfoxide is present in an amount effective to provide improved separation of the aromatic and non-aromatic hydrocarbon compounds, as compared to a process employing the same extractive distillation composition not comprising the organic sulfoxide.

    摘要翻译： 本发明涉及使用萃取蒸馏组合物至少部分分离芳族和非芳族烃化合物的混合物的蒸馏方法组合物，其包含：a。 至少一种制剂的有机亚砜。 式R 1，R 2，R 3和R 4中的至少一个丙烯酸砜具有至少一个碳原子并且可以相同或不同，并且其中所述至少一种有机亚砜以有效提供芳族化合物的改进分离的量存在 和非芳族烃化合物，与使用不包含有机亚砜的相同萃取蒸馏组合物的方法相比。