摘要:
An electrochemical sensor is designed for use in detecting a concentration of an analyte in a sample solution. The sensor to have a longer useful lifetime, improved stability and improved response time for single or multiple use applications. In one aspect, some of these goals are achieved by providing the multilayer enzyme electrode membrane having both nonporous and microporous layers. The microporous layer is formed from a polymer binder, a polymer powder, a surfactant and a mineral powder. In another aspect, certain of these goals are achieved by the use of a layer comprised of an enzyme disposed within a polymer matrix. In certain embodiments, the multilayer enzyme electrode membrane includes an outermost layer which is capable of dissolving in the sample solution such that the interface between the multilayer enzyme electrode membrane and the sample solution is continually renewed. The sensor provides an electrical current output proportional to the reagent chemical interaction of the analyte with an immobilized enzyme layer during exposure of the sensor in such solution.
摘要:
The invention relates to a process for coating a surface through graft polymerization, characterized in that before graft polymerization, the surface is modified, in the presence of an amine of formula: wherein R1 is hydrogen or a group R4, R2 and R3 are each independently a group R4, and R4 is [-1,2-C2-C3alkylen-T-]n-H wherein T is O or NH and n is a number from 1 to 3, by a compound having a functional group: wherein R5 to R7 are each C1-C4alkyl. The amount of amine is preferably from 5 to 500 g/m2 of surface of the substrate particle. The amount of the trialkoxysilane compound is preferably from 0.1 to 2 g/m2 of surface of the substrate particle. The process for coating a surface is particularly useful for effect pigments.
摘要翻译:本发明涉及通过接枝聚合涂覆表面的方法,其特征在于在接枝聚合之前,在下式胺的存在下改性表面:其中R 1是氢或基团R 4,R 2和R 3各自独立地是 R4和R4是具有官能团的化合物,其中T是O或NH,n是1至3的数[1,2-C2-C3烷基-T-] nH,其中R5至R7是 每个C 1 -C 4烷基。 胺的量优选为基材颗粒表面的5至500g / m 2。 三烷氧基硅烷化合物的量优选为基板颗粒表面的0.1〜2g / m 2。 涂覆表面的方法对于效果颜料特别有用。
摘要:
To achieve a light-emitting device emitting light with high brightness, closer to natural light, and less color shift due to a small change in intensity of emitted light, in a light-emitting device including a light source emitting light by driving current and at least one wavelength-converting material absorbing at least part of the light from the light source and emitting light having a different wavelength, the color coordinate x1(17.5) and the color coordinate y1(17.5) of the light emitted at a driving current density of 17.5 A/cm2 and the color coordinate x1(70) and the color coordinate y1(70) of the light emitted at a driving current density of 70 A/cm2 satisfy the following Expressions (D) and (E): −0.006≦x1(17.5)−x1(70)≦0.006 (D), −0.006≦y1(17.5)−y1(70)≦0.006 (E).
摘要:
To achieve a light-emitting device emitting light with high brightness, closer to natural light, and less color shift due to a small change in intensity of emitted light, in a light-emitting device including a light source emitting light by driving current and at least one wavelength-converting material absorbing at least part of the light from the light source and emitting light having a different wavelength, the color coordinate x1(17.5) and the color coordinate y1(17.5) of the light emitted at a driving current density of 17.5 A/cm2 and the color coordinate x1(70) and the color coordinate y1(70) of the light emitted at a driving current density of 70 A/cm2 satisfy the following Expressions (D) and (E): −0.006≦x1(17.5)−x1(70)≦0.006 (D), −0.006≦y1(17.5)−y1(70)≦0.006 (E).
摘要:
Colored pearlescent pigment comprising a pearlescent pigment and a second pigment, characterized in using an adhesion promotor for the mutual adsorbance of the pearlescent pigment and the second pigment, whereby the adhesion promotor is a polymer containing hydroxy groups, a process for its preparation, its use and a colored high molecular weight material.
摘要:
To achieve a light-emitting device emitting light with high brightness, closer to natural light, and less color shift due to a small change in intensity of emitted light, in a light-emitting device including a light source emitting light by driving current and at least one wavelength-converting material absorbing at least part of the light from the light source and emitting light having a different wavelength, the color coordinate x1(17.5) and the color coordinate y1(17.5) of the light emitted at a driving current density of 17.5 A/cm2 and the color coordinate x1(70) and the color coordinate y1(70) of the light emitted at a driving current density of 70 A/cm2 satisfy the following Expressions (D) and (E): −0.006≦x1(17.5)−x1(70)≦0.006 (D), −0.006≦y1(70)−y1(70)≦0.006 (E).
摘要:
The invention relates to a collection of composite plateletlike particles comprising a core and at least one coating layer consisting essentially of a compound having from 60 to 95% by weight of carbon and from 5 to 25% by weight of nitrogen, the balance to 100% being selected from elements of the group consisting of hydrogen, oxygen and sulfur. The invention also relates to processes for the manufacture thereof, to polymer compositions containing it, and to the use thereof as effect pigments. Preferably, the process for preparing the instant collection of particles comprises the steps of (a) suspending plateletlike particles in a liquid; (b) optionally adding a surface modifier, a polymerisation catalyst or both; (c) before or after step (b), adding one or more polymers containing nitrogen and carbon atoms, or one or more monomers which are capable to polymerize to said polymer; (d) effecting a polymeric coating layer to be formed on the surface of said plateletlike particles from the polymers or monomers added at step (c); (e) isolating said plateletlike particles having said polymeric coating layer from the suspension; and (f) heating said plateletlike particles having said polymeric coating layer to a temperature of from 100° C. to 1000° C. in a gaseous environment.
摘要:
To achieve a light-emitting device emitting light with high brightness, closer to natural light, and less color shift due to a small change in intensity of emitted light, in a light-emitting device including a light source emitting light by driving current and at least one wavelength-converting material absorbing at least part of the light from the light source and emitting light having a different wavelength, the color coordinate x1(17.5) and the color coordinate y1(17.5) of the light emitted at a driving current density of 17.5 A/cm2 and the color coordinate x1(70) and the color coordinate y1(70) of the light emitted at a driving current density of 70 A/cm2 satisfy the following Expressions (D) and (E): −0.006≦x1(17.5)−x1(70)≦0.006 (D), −0.006≦y1(17.5)−y1(70)≦0.006 (E).