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    • 63. 发明授权
    • Immobilized Lewis Acid catalysts
    • 固定化路易斯酸催化剂
    • US5481054A
    • 1996-01-02
    • US398637
    • 1995-03-03
    • Tze-Chiang ChungFrank J. ChenJon E. StanatAlok Kumar
    • Tze-Chiang ChungFrank J. ChenJon E. StanatAlok Kumar
    • C08F4/02C08F4/00C08F4/06C08F4/14C08F8/00C08F10/00C07C2/70C07C2/58
    • C08F10/00
    • Immobilized Lewis Acid catalyst comprising polymer having at least one Lewis Acid immobilized within the structure therein, said polymer having monomer units represented by the structural formula:--[A].sub.a --[B].sub.b --[C].sub.c --whereina represents about 1 to about 99 mole %b represents about 0 to about 50 mole %c represents about 1 to about 99 mole %a+b+c is preferably about 100%; ##STR1## C is selected from the group consisting of: ##STR2## (III) combinations thereof, wherein D is OH, halide, OR.sup.4, NH.sub.2, NHR.sup.3, OM', or OM";E is the residue of the reaction of at least one Lewis Acid with the D substituent of monomer unit B;R.sup.1 represents proton, C.sub.1 -C.sub.24 alkyl group, or C.sub.3 -C.sub.24 cycloalkyl;R.sup.2 represents C.sub.1 -C.sub.24 alkylene group, C.sub.3 -C.sub.24 cycloalkylene, C.sub.6 -C.sub.18 arylene, or C.sub.7 -C.sub.30 alkylarylene;R.sup.3 represents C.sub.1 -C.sub.24 alkyl, C.sub.3 -C.sub.24 cycloalkyl, C.sub.1 -C.sub.24 aryl, or C.sub.7 -C.sub.30 alkylaryl;R.sup.4 represents C.sub.1 -C.sub.24 alkyl, C.sub.3 -C.sub.24 cycloalkyl, C.sub.1 -C.sub.24 aryl, or C.sub.7 -C.sub.30 alkylaryl;M' represents alkali metal;M" represents alkaline-earth metal.Also disclosed are polymerization and alkylation processes utilizing the immobilized Lewis Acid catalysts. Another aspect of the present invention is a method of manufacturing immobilized Lewis Acid catalysts.
    • 固定化路易斯酸催化剂,其包含具有固定在其结构内的至少一种路易斯酸的聚合物,所述聚合物具有由以下结构式表示的单体单元: - [A] a- [B] b- [C] c-,其中a表示约1 至约99摩尔%b表示约0至约50摩尔%c表示约1至约99摩尔%a + b + c优选约100%; 其中D是OH,卤化物,OR4,NH2,NHR3,OM'或其组合的组合。 OM“ E是至少一种路易斯酸与单体单元B的D取代基反应的残基; R1表示质子,C1-C24烷基或C3-C24环烷基; R2表示C1-C24亚烷基,C3-C24亚环烷基,C6-C18亚芳基或C7-C30烷基亚芳基; R3表示C1-C24烷基,C3-C24环烷基,C1-C24芳基或C7-C30烷基芳基; R4表示C1-C24烷基,C3-C24环烷基,C1-C24芳基或C7-C30烷基芳基; M'表示碱金属; M“表示碱土金属。 还公开了利用固定化的路易斯酸催化剂的聚合和烷基化方法。 本发明的另一方面是制备固定化的路易斯酸催化剂的方法。
    • 70. 发明授权
    • System and method for coupling users to a retail computer system with low risk of eavesdropping
    • 将用户连接到低偷听风险的零售计算机系统的系统和方法
    • US07352996B2
    • 2008-04-01
    • US10112318
    • 2002-03-29
    • Alok Kumar
    • Alok Kumar
    • H04B5/00
    • G06Q20/327G06F21/35G06Q20/346G07F7/1008H04L63/0853H04L63/0861H04L2463/102
    • A system reduces the risk of eavesdropping on data used to access an establishment's computer network. In one embodiment, a system includes a personal area network (PAN) access device that couples a low power, low frequency modulated signal to a wearer, the PAN access device including a data storage unit for storing personal identification data including biometric data and a modulator for modulating a low power, low frequency signal with the personal identification data, a personal area network (PAN) receiver for receiving the modulated signal, a database for storing purchasing data for a plurality of customers, a memory including instructions which, when executed, associate the received personal identification data with the stored shopping data for one of the plurality of customers and a microprocessor for executing the stored instructions.
    • 系统降低了窃听用于访问企业的计算机网络的数据的风​​险。 在一个实施例中,系统包括将低功率,低频调制信号耦合到佩戴者的个人区域网络(PAN)接入设备,所述PAN接入设备包括用于存储包括生物测定数据的个人识别数据的数据存储单元和调制器 用于通过个人识别数据调制低功率,低频信号,用于接收调制信号的个人局域网(PAN)接收机,用于存储多个客户的购买数据的数据库,包括指令的存储器,当被执行时, 将接收到的个人识别数据与用于多个客户中的一个的所存储的购物数据相关联,以及用于执行所存储的指令的微处理器。