会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Ion-selective electrodes
    • 离子选择电极
    • US5132345A
    • 1992-07-21
    • US624623
    • 1990-12-10
    • Stephen J. HarrisMichael A. McKerveyGyula SvehlaDermot Diamond
    • Stephen J. HarrisMichael A. McKerveyGyula SvehlaDermot Diamond
    • G01N27/333
    • G01N27/333
    • An ion-selective polymeric membrane for an electrochemical sensor for use in analytical chemistry, comprisinga) a supporting matrix e.g. of PVC, andb) an ionophore selected from calixarene or oxacalixarene derivatives of the formula IV ##STR1## wherein n+m=3-8;m=0-8;n=0-8;a, which may be the same or different on each aryl group, is 0 or 1;R.sup.2 is alkyl, aryl, alkaryl, alkoxy, alkoxyalkoxy, aryloxy, alkaryloxy, alicyclic, alkylthio, arylthio, alkarylthio, or a substituted derivative thereof;R.sup.3 is --H, alkyl or alkenyl;X is --OH or a group containing an acrylate or methacrylate functional group;provided that when X is --OH, n is at least 1/2(n+m);and provided that when m=0, n=4, a=0 and R.sup.3 is alkyl or allyl, R.sup.2 is not alkoxy having 4 or more carbon atoms in the alkyl group;and provided that when m=0, n=4, a=0 and R.sup.3 is t-butyl, R.sup.2 is not methoxy or ethoxy;or of the formula V ##STR2## wherein R.sup.4 is alkyl; or polymers of those compounds of the formula IV in which X is a group containing an acrylate or methacrylate group.New compounds in which R.sup.2 is --SCH.sub.2 CH.sub.3 are described.Selectivity coefficients and slope measurements are given for the ionophores in PVC electrodes which are selective for sodium, potassium and caesium.
    • 一种用于分析化学中的用于电化学传感器的离子选择性聚合物膜,包括:a) 的PVC,和b)选自式IV的杯芳烃或氧杂七环芳烃衍生物的离子载体,其中n + m = 3-8; m = 0-8; n = 0-8; a在每个芳基上可以相同或不同,为0或1; R2是烷基,芳基,烷芳基,烷氧基,烷氧基烷氧基,芳氧基,烷氧基,脂环族,烷硫基,芳硫基,烷芳硫基或其取代衍生物。 R3是-H,烷基或烯基; X是-OH或含有丙烯酸酯或甲基丙烯酸酯官能团的基团; 条件是当X为-OH时,n为至少1/2(n + m); 并且条件是当m = 0时,n = 4,a = 0和R3是烷基或烯丙基,R2不是烷基中具有4个或更多个碳原子的烷氧基; 并且条件是当m = 0时,n = 4,a = 0和R3是叔丁基,R 2不是甲氧基或乙氧基; 或其中R 4是烷基的式V V 或其中X为含丙烯酸酯或甲基丙烯酸酯基团的式Ⅳ化合物的聚合物。 描述了其中R2是-SCH2CH3的新化合物。 对于对钠,钾和铯有选择性的PVC电极中的离子载体,给出了选择性系数和斜率测量。
    • 9. 发明授权
    • Sensor for measuring alcohol content of alcohol gasoline fuel mixtures
    • 用于测量酒精汽油燃料混合物的酒精含量的传感器
    • US5262645A
    • 1993-11-16
    • US754475
    • 1991-09-03
    • David K. LambertStephen J. HarrisStephen J. Swarin
    • David K. LambertStephen J. HarrisStephen J. Swarin
    • G01N21/31G01N21/35G01N33/28
    • G01N21/314G01N21/3504G01N21/3577G01N21/359G01N33/2852
    • An alcohol sensing device is provided for determining the alcohol content within an alcohol/gasoline fuel mixture provided to an internal combustion engine. The sensing device uses infrared spectrometry measuring techniques. The infrared sensing device determines the ratio of light absorption by the alcohol/gasoline mixture at two discrete wavelengths within the near-infrared spectrum. The two particular wavelengths of interest are preferably chosen so that at one of the infrared wavelengths, alcohol is strongly absorbing while the gasoline exhibits very little absorption, and at the second wavelength both the alcohol and the gasoline exhibit are essentially non-absorbing. A light beam is transmitted through the alcohol/gasoline fuel mixture such that the two discrete wavelengths traverse the same optical path. A first and second detector are adjacently disposed so as to receive the emitted light from each wavelength after their transmission through the alcohol/gasoline fuel mixture. A third and fourth detector are adjacently disposed in proximity to the first and second detectors for sensing the drift in ambient temperatures corresponding to the first and second detectors. Once the signals corresponding to the two wavelengths are obtained and the signals corresponding to the ambient temperatures are factored out, the ratio of the absorbances by the fuel mixture at both wavelengths is computed. From this ratio and the fuel temperature the concentration of alcohol in the fuel is determined.
    • 提供了一种酒精感测装置,用于确定提供给内燃机的醇/汽油燃料混合物中的醇含量。 感测装置使用红外光谱测量技术。 红外感测装置确定近红外光谱中两个离散波长下的醇/汽油混合物的光吸收率。 优选选择感兴趣的两个特定波长,使得在红外波长的一个处,醇是强吸收的,而汽油表现出非常少的吸收,而在第二波长下,醇和汽油表现出基本上不吸收。 光束通过酒精/汽油燃料混合物传播,使得两个离散的波长穿过相同的光路。 相邻地设置第一和第二检测器,以便在透过酒精/汽油燃料混合物之后接收来自每个波长的发射光。 第三和第四检测器相邻设置在第一和第二检测器附近,用于感测对应于第一和第二检测器的环境温度的漂移。 一旦获得对应于两个波长的信号,并且将与环境温度相对应的信号进行分解,则计算两个波长处的燃料混合物的吸光度比。 从该比率和燃料温度确定燃料中的醇的浓度。