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    • 1. 发明授权
    • Production and purification of phenol: hydroxyacetone removal by hydrotalcite
    • 苯酚的生产和纯化:通过水滑石除去羟基丙酮
    • US06486365B1
    • 2002-11-26
    • US10063258
    • 2002-04-04
    • John W. FulmerBharat SinghPramod KumbharPrashant Anil TatakeUmesh Hasyagar
    • John W. FulmerBharat SinghPramod KumbharPrashant Anil TatakeUmesh Hasyagar
    • C07C3708
    • C07C37/86C07C2521/10C07C39/04
    • A process for converting carbonyl-type impurities contained in a phenolic solvent to high-boiling derivatives is provided by contacting the phenolic solvent with a hydrotalcite-type material (HTM). The phenol can be separated from the high-boiling derivatives using conventional separation techniques, such as distillation, so the invention also provides a process for separating carbonyl-type impurities, such as hydroxyacetone (HA), from a phenolic solvent. The process can be applied in the conventional industrial process for converting cumene to phenol to remove carbonyl-type impurities from the phenol product. A process and a facility for producing purified phenol by converting cumene to phenol are provided. In the conversion of cumene to phenol, the phenol often contains carbonyl-type impurities. The phenol and carbonyl-type impurities are reacted in the presence of an HTM to produce phenol and high-boiling derivatives. The phenol may be further purified using conventional separation techniques, such as distillation, to remove the high-boiling derivatives.
    • 通过使酚类溶剂与水滑石类材料(HTM)接触来提供将酚类溶剂中所含的羰基型杂质转化成高沸点衍生物的方法。 苯酚可以使用常规的分离技术如蒸馏从高沸点衍生物中分离,因此本发明还提供了从酚类溶剂中分离羰基型杂质如羟基丙酮(HA)的方法。 该方法可用于将异丙基苯转化为苯酚以从苯酚产物中除去羰基型杂质的常规工业方法。 提供了通过将异丙基苯转化成苯酚来生产纯化苯酚的方法和设备。 在异丙苯转化为苯酚时,苯酚常含有羰基型杂质。 苯酚和羰基型杂质在HTM存在下反应生成苯酚和高沸点衍生物。 可以使用常规分离技术如蒸馏进一步纯化苯酚,以除去高沸点衍生物。
    • 9. 发明授权
    • Token ring test simulation method and device
    • 令牌环测试模拟方法及装置
    • US5309092A
    • 1994-05-03
    • US9523
    • 1993-01-27
    • David KuntzBharat SinghKittur NageshRonald McBride
    • David KuntzBharat SinghKittur NageshRonald McBride
    • G01R31/28G01R31/317G01R31/02
    • H04L12/2697H04L12/433H04L43/50
    • A loopback connector system for testing token ring components such as routers or interface assemblies with requiring that the component to be tested be connected into the local area network (LAN). The connector permits the component to be tested to be isolated from the LAN, permitting the integrity of the component to be tested without regard to the integrity of lobe cables or other devices on the ring, and without degrading network performance. The connector system includes two different multi-pin connector types, a DB9 and an RJ45 connector, used to connect into the network, separated by a short two-pair cable. Resistors used to simulate the network loading on the component are connected between appropriate pins, with the resistors being shared between the two types of connectors.
    • 用于测试令牌环组件(如路由器或接口组件)的环回连接器系统,要求将要测试的组件连接到局域网(LAN)。 连接器允许组件被测试与LAN隔离,允许测试组件的完整性,而不考虑环上的波形电缆或其他设备的完整性,并且不会降低网络性能。 连接器系统包括两个不同的多针连接器类型,一个DB9和一个RJ45连接器,用于连接到网络中,由两根短路电缆分开。 用于模拟组件上网络负载的电阻器连接在适当的引脚之间,电阻在两种类型的连接器之间共享。