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11 条记录 (耗时 0.028 秒)

    Process for the production of fluorocarboxylic acid anhydrides
    3.
    发明授权
    Process for the production of fluorocarboxylic acid anhydrides 有权
    氟代羧酸酐的制备方法

    公开(公告)号：US06248923B1

    公开(公告)日：2001-06-19

    申请号：US09520526

    申请日：2000-03-08

    申请人： Robert Lin ,  Robert Thomas Hembre ,  Edwin Franklin Holcombe, III ,  Mark Robert Shelton

    发明人： Robert Lin ,  Robert Thomas Hembre ,  Edwin Franklin Holcombe, III ,  Mark Robert Shelton

    IPC分类号： C07C5154

    CPC分类号： C07C51/567 ,  C07C51/56 ,  C07C51/573 ,  Y02P20/127 ,  C07C53/18

    摘要： Disclosed is process for the production of symmetrical fluoro-substituted anhydrides from mixed or unsymmetrical anhydrides, i.e., wherein the two carboxylic acid acyl groups of the anhydrides are different, by subjecting an unsymmetrical anhydrides to reactive distillation to produce a lower boiling product comprising a symmetrical fluorocarboxylic acid anhydride and a higher boiling product comprising a second symmetrical anhydride. The process is particularly useful for the coproduction of trifluoroacetic anhydride (TFAA) and acetic anhydride (Ac2O) from ketene and trifluoroacetic acid wherein ketene and trifluoroacetic acid (TFA) are reacted to produce a mixed anhydride, acetyl trifluoroacetate (Ac-TFA), which then is subjected to reactive distillation to produce a vapor product comprising TFAA and a liquid product comprising Ac2O.

    摘要翻译： 公开了从混合或不对称酸酐生产对称氟取代的酸酐的方法，即其中酸酐的两个羧酸酰基不同，通过使不对称酸酐进行反应蒸馏以产生包含对称的 氟代羧酸酐和包含第二对称酸酐的较高沸点产物。 该方法对于从乙烯酮和三氟乙酸共聚产生三氟乙酸酐（TFAA）和乙酸酐（Ac 2 O）特别有用，其中乙烯酮和三氟乙酸（TFA）反应以产生混合酸酐，乙酰基三氟乙酸酯（Ac-TFA），其中 然后进行反应蒸馏以产生包含TFAA和包含Ac 2 O的液体产物的蒸气产物。

    Process for the preparation of alkanoyloxy-benzenesulfonic acids and salts thereof
    5.
    发明授权
    Process for the preparation of alkanoyloxy-benzenesulfonic acids and salts thereof 有权
    烷酰氧基 - 苯磺酸及其盐的制备方法

    公开(公告)号：US06218555B1

    公开(公告)日：2001-04-17

    申请号：US09543950

    申请日：2000-04-06

    申请人： Robert Thomas Hembre ,  Edwin Franklin Holcombe, III ,  Robert Lin ,  Mark Robert Shelton

    发明人： Robert Thomas Hembre ,  Edwin Franklin Holcombe, III ,  Robert Lin ,  Mark Robert Shelton

    IPC分类号： C07C5300

    CPC分类号： C07C303/06 ,  C07C67/08 ,  C07C69/017 ,  C07C309/42 ,  C07C69/24

    摘要： Disclosed is a process for the preparation of alkanoate esters of hydroxybenzenesulfonic acids and salts thereof by the steps of (1) contacting or reacting phenol with an alkanoic acid in the presence of trifluoroacetic acid (TFA) and trifluoroacetic anhydride (TFAA) to produce a aryl alkanoate ester and (2) contacting the reaction mixture of step (1) with a sulfonating agent to convert the aryl alkanoate ester to an alkanoate ester of hydroxybenzenesulfonic acid. The process provides the economic advantage inherent in using the product of esterification of step (1) without Disolation in the sulfonation of step (2).

    摘要翻译： 公开了通过以下步骤制备羟基苯磺酸的链烷酸酯及其盐的方法：（1）在三氟乙酸（TFA）和三氟乙酸酐（TFAA）存在下使苯酚与烷酸接触或反应，生成芳基 链烷酸酯和（2）使步骤（1）的反应混合物与磺化剂接触以将芳基链烷酸酯转化为羟基苯磺酸的链烷酸酯。 该方法提供了在步骤（2）的磺化中使用步骤（1）的酯化产物而没有分离的固有的经济优点。

    WOOD HEATER WITH ENHANCED MICROWAVE DISPERSING AND TM-MODE MICROWAVE LAUNCHERS
    7.
    发明申请
    WOOD HEATER WITH ENHANCED MICROWAVE DISPERSING AND TM-MODE MICROWAVE LAUNCHERS 审中-公开
    具有增强型微波散射和TM模式微波发射器的木质加热器

    公开(公告)号：US20120160838A1

    公开(公告)日：2012-06-28

    申请号：US13323239

    申请日：2011-12-12

    申请人： Harold Dail Kimrey, JR. ,  David Carl Attride ,  Brad William Overturf ,  Mark Robert Shelton

    发明人： Harold Dail Kimrey, JR. ,  David Carl Attride ,  Brad William Overturf ,  Mark Robert Shelton

    IPC分类号： H05B6/70

    CPC分类号： B27K5/0055 ,  B27K3/346 ,  C08H8/00 ,  F26B3/347 ,  F26B5/048 ,  F26B2210/16 ,  H05B6/707 ,  H05B6/763 ,  H05B6/80 ,  H05B2206/046 ,  Y02P20/124

    摘要： A microwave heater capable of heating a bundle of wood and equipped with an optimized system for introducing microwave energy into the heater is provided. Also provided is an enhanced system for launching and dispersing within the heater. The system uses one or more TMab microwave launchers to emit microwave energy in the interior of the microwave heater in a TMab mode, where a is 0 and b is an integer between 1 and 5. The TMab launchers can be configured to emit microwave energy through an open outlet that faces generally parallel to the nearest wall of the heater. In certain situations, it can be advantageous to use at least two TMab microwave launchers having open outlets that face towards one another. In certain situations, it can be advantageous to use at least two TMab microwave launchers located on generally opposite sides of the microwave heater. In certain situations, the system can also include one or more moving reflectors for dispersing microwave energy emitted from the TMab microwave launchers.

    摘要翻译： 提供能够加热一束木材并配备有用于将微波能量引入加热器的优化系统的微波加热器。 还提供了用于在加热器内发射和分散的增强系统。 该系统使用一个或多个TMab微波发射器在TMab模式下在微波加热器内部发射微波能量，其中a为0，b为1至5之间的整数。TMab发射器可配置为通过 一个敞开的出口，大致平行于加热器的最近的壁。 在某些情况下，使用具有朝向彼此的开放出口的至少两个TMab微波发射器可能是有利的。 在某些情况下，使用位于微波加热器的相对两侧的至少两个TMab微波发射器是有利的。 在某些情况下，系统还可以包括一个或多个移动反射器，用于分散从TMab微波发射器发射的微波能量。

    WOOD HEATER WITH ALTERNATING MICROWAVE LAUNCH LOCATIONS AND ENHANCED HEATING CYCLES
    9.
    发明申请
    WOOD HEATER WITH ALTERNATING MICROWAVE LAUNCH LOCATIONS AND ENHANCED HEATING CYCLES 审中-公开
    木质加热器，配有微波启动位置和增强加热循环

    公开(公告)号：US20120160840A1

    公开(公告)日：2012-06-28

    申请号：US13323194

    申请日：2011-12-12

    申请人： Harold Dail Kimrey, JR. ,  David Carl Attride ,  Brad William Overturf ,  Mark Robert Shelton

    发明人： Harold Dail Kimrey, JR. ,  David Carl Attride ,  Brad William Overturf ,  Mark Robert Shelton

    IPC分类号： H05B6/68

    CPC分类号： B27K5/0055 ,  B27K3/346 ,  C08H8/00 ,  F26B3/347 ,  F26B5/048 ,  F26B2210/16 ,  H05B6/707 ,  H05B6/763 ,  H05B6/80 ,  H05B2206/046 ,  Y02P20/124

    摘要： An optimized system and process for heating wood using a microwave heater. The optimized system/process directs microwave energy towards different regions of the wood at different times during heating. In certain situations, microwave energy is introduced into the heater using microwave launchers and the system includes one or more microwave switches that control distribution of microwave energy to the microwave launchers so that two adjacent and/or opposing microwave launchers do not simultaneously introduce microwave energy into the heater. The optimized heating process also includes heating wood using a plurality of sequential heating cycles carried out at different conditions. For example, at least one of the heating cycles can be carried out at a lower input rate of microwave energy and/or at a lower pressure than one of the previous heating cycles.

    摘要翻译： 使用微波加热器加热木材的优化系统和工艺。 优化的系统/过程在加热期间的不同时间将微波能量引导到木材的不同区域。 在某些情况下，使用微波发射器将微波能量引入加热器，并且该系统包括一个或多个微波开关，其控制微波能量向微波发射器的分布，使得两个相邻和/或相对的微波发射器不同时将微波能量引入 加热器。 优化的加热过程还包括使用在不同条件下进行的多个连续加热循环加热木材。 例如，至少一个加热循环可以以较低的微波能量输入速率和/或比之前的加热循环之一更低的压力进行。