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    • 94. 发明申请
    • Copolymers comprising polyalkylene oxide groups and quaternary nitrogen atoms
    • 包含聚环氧烷基团和季氮原子的共聚物
    • US20070129516A1
    • 2007-06-07
    • US10579547
    • 2004-11-17
    • Juergen DeteringThomas PfeifferParmod ReddyXinbei Song
    • Juergen DeteringThomas PfeifferParmod ReddyXinbei Song
    • C08F26/06
    • C11D3/3776C08F220/06C08F220/26C08F220/28C08F220/58C08F228/02C08F290/062C11D3/1253C11D3/3757C11D3/3769
    • Copolymers which comprise in copolymerized form, (A) 60 to 99% by weight of at least one monoethylenically unsaturated polyalkylene oxide monomer of the formula I H2C═CR1—X—Y—R2—O—n—R3  I  in which the variables have the following meanings: X is —CH2— or —CO—, if Y is —O—; is —CO—, if Y is —NH—; Y is —O— or —NH—; R1 is hydrogen or methyl; R2 are identical or different C2-C6-alkylene radicals, which may be linear or branched and may be arranged blockwise or randomly; R3 is hydrogen or C1-C4-alkyl; n is an integer from 3 to 50, (B) 1 to 40% by weight of at least one quaternized nitrogen-containing monoethylenically unsaturated monomer, (C) 0 to 39% by weight of anionic monoethylenically unsaturated monomers and (D) 0 to 30% by weight of other nonionic monoethylenically unsaturated monomers and have an average molecular weight Mw of from 2000 to 100 000, and use of these copolymers as dispersants for clay minerals.
    • 包含共聚形式的共聚物(A)60至99重量%的至少一种式I的单烯键式不饱和聚环氧烷单体<?in-line-formula description =“In-line Formulas”end =“lead”? “H”2 C-CR 1 -XY - R&lt; 2&lt;&lt; img id = “PRIVATE-USE-CHARACTER-00002”he =“7.20mm”wi =“8.47mm”file =“US20070129516A1-20070607-Parenclosest.TIF”alt =“私人使用字符Parenclosest”img-content =“character”img-format =“tif”/> 3 I <?in-line-formula description =“In-line Formulas”end =“tail”?>其中 变量具有以下含义:X是-CH 2 - 或-CO-,如果Y是-O-; 是-CO-,如果Y是-NH-; Y是-O-或-NH-; R 1是氢或甲基; R 2是相同或不同的C 2 -C 6 - 亚烷基,其可以是直链或支链的并且可以以块状或随机排列; R 3是氢或C 1 -C 4 - 烷基; n为3〜50的整数,(B)1〜40重量%的至少一种季铵化含氮单烯属不饱和单体,(C)0〜39重量%的阴离子单烯属不饱和单体和(D)0〜 30重量%的其它非离子单烯键式不饱和单体,其平均分子量M w 2为2000至100 000,并且使用这些共聚物作为粘土矿物的分散剂。
    • 98. 发明授权
    • Method for producing 2-aminomethyl-4-cyano-thiazol
    • 2-氨基甲基-4-氰基 - 噻唑的制备方法
    • US06642388B1
    • 2003-11-04
    • US10031700
    • 2002-05-10
    • Thomas Pfeiffer
    • Thomas Pfeiffer
    • C07D27704
    • C07D277/56C07K5/06078
    • The invention relates to processes for preparing 2-aminomethyl-4-cyanothiazole and its salts of the formulae Ia and Ib in which n=1 or 2 and, for n=1, X is chloride, bromide, triflate and hydrogen sulfate and for n=2, X is sulfate, comprising the process step where the thioamide of the formula IV is stirred with a bromopyruvate of the formula V, in which R1 is branched or linear C1-4-alkyl in an alcohol R2OH in which R2 is branched or linear C1-8-alkyl, HO—CH2—CH2—, HO—CH2—CH2—CH2— or C1-4-alkyl- O—CH2—CH2— at from −5° C. to 40° C. until the conversion of the thioamide IV has essentially gone to completion, and to the compounds of the formulae Ia and Ib.
    • 本发明涉及制备2-氨基甲基-4-氰基噻唑及其式Ⅰa和Ⅰb盐的方法,其中n = 1或2,对于n = 1,X是氯化物,溴化物,三氟甲磺酸酯和硫酸氢盐,n = 2, X是硫酸盐,其包括其中式IV的硫代酰胺与式V的溴丙酮酸盐搅拌的方法步骤,其中R 1在醇R 2 OH中是支链或直链C 1-4 - 烷基,其中R 在-5℃至40℃时,支链或直链C 1-8烷基,HO-CH 2 -CH 2 - ,HO-CH 2 -CH 2 - 或C 1-4 - 烷基-O-CH 2 -CH 2 - 直到硫代酰胺IV的转化基本上已经完成,以及式Ia和Ib的化合物。
    • 100. 发明授权
    • Transmitting device, transmitting apparatus and optical transmission
system for optically transmitting analog electrical signals
    • 用于光学传输模拟电信号的发射装置,发射装置和光传输系统
    • US6034801A
    • 2000-03-07
    • US879425
    • 1997-06-20
    • Thomas Pfeiffer
    • Thomas Pfeiffer
    • H04N7/20H04B10/50H04B10/508H04B10/524H04J14/08
    • H04B10/505H04B10/508H04B10/524
    • An optical transmission system (SYS), e.g. a cable television distribution network, contains at least one transmitting device (SEN), an optical transmission network (NET) and a number of receiving devices (EMP). In order to transmit analog electrical signals, e.g. television signals in the MHz range in such an optical transmission system, the analog electrical signals are first digitized in accordance with the pulse-duration modulation method (PDM) and are then routed to an electro-optic modulator (MOD). An optical pulse source (PULS) generates optical pulses whose repetition frequency rate is higher by the factor of 100 at least than the 3-dB cutoff frequency of the analog electrical signals, e.g. 10 GHz. The optical pulses are modulated with the digitized signals in the electro-optic modulator (MOD) and are then transmitted to the receiving devices (EMP). Only an optical-to-electrical converter OE and a passive electrical low-pass filter (TP) are required to recover the analog electrical signals. The modulated optical pulses from different transmitting devices (SEN) can be transmitted in the optical time-division multiplex method to increase the transmission capacity.
    • 光传输系统(SYS) 有线电视分配网络包含至少一个发送设备(SEN),光传输网络(NET)和多个接收设备(EMP)。 为了传输模拟电信号,例如, 在这种光传输系统中在MHz范围内的电视信号,模拟电信号首先根据脉冲持续时间调制方法(PDM)数字化,然后被路由到电光调制器(MOD)。 光脉冲源(PULS)产生光脉冲,其重复频率比模拟电信号的3-dB截止频率至少要高100倍。 10 GHz。 光脉冲用电光调制器(MOD)中的数字化信号进行调制,然后被传送到接收装置(EMP)。 只需要一个光电转换器OE和一个无源电气低通滤波器(TP)来恢复模拟电信号。 来自不同发射装置(SEN)的调制光脉冲可以以光时分复用方式传输,以增加传输容量。