摘要:
Polymerizable calixarene and oxacalixarene derivates wherein at least one aryl group of the macrocyclic ring has a phenolic side chain of the formula VII: ##STR1## wherein Z is a group containing an acrylate or methacrylate functional group. Linear polymers may be formed from these compounds by free radical polymerization at the (meth)acrylate group. Such compounds and their polymers are capable of sequestering metals.
摘要:
Calixarene and oxacalixarene derivatives of the formula IV: ##STR1## wherein m'+m"=0-8n=0-8m'.gtoreq.1/2(m'+m")3.ltoreq.m'+m"+n.ltoreq.8if n=0, m'+m".gtoreq.4R.sup.3 is H, halogen, or hydrocarbyl, aryl, hydrocarbylaryl or a substituted derivative thereof and R.sup.3 may be the same or different on each aryl group;R.sup.15 is H or hydrocarbyl, aryl, hydrocarbylaryl or a substituted derivative thereof;X is selected from ##STR2## wherein R.sup.7 and R.sup.8 which may be the same or different are H or hydrocarbyl (including a cycloaliphatic ring formed by R.sup.7 and R.sup.8 together), aryl, hydrocarbylaryl or a substituted derivative thereof; R.sup.9 is --OH, --NH.sub.2, --NHC(O)NH.sub.2 or --NHAr, wherein Ar is aryl or a substituted derivative thereof,n' is 0 or 1.Use of the compounds for sequestration of metals is also described.
摘要:
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.
摘要翻译: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。
摘要:
New chromoionophores of the formula IV ##STR1## wherein a=0-3, b=0 or 1, c =0 or 1, x=0 or 1, y=0 or 1, z=0 or 1,R', which may be the same or different in each aryl group, is H, halogen, hydrocarbyl, aryl, hydrocarbylaryl or a substituted derivative thereof;R, which may be the same or different, is hydrocarbyl, aryl, hydrocarbylaryl, or a substituted derivative thereofare useful in optical sensors or colourmetric reagents for clinical use particularly for lithium, When complexed with lithium, the chromoionophores of the invention and other calixarene derivatives can be used for detecting amines, particularly trimethylamine, as an indicator of fish spoilage.
摘要:
An encapsulating composition for electronic devices comprises a curable material such as a silicone resin and an ion scavenger compound selected from certain calixarene or oxacalixarene compounds in which at least half of the phenolic groups have been substituted by specific groups and certain silacrown compounds. Exemplary ion scavenger compounds include ##STR1## the tetraethyl acetate of 7, 13, 19, 25-tetra-tertbutyl-27, 28, 29, 30-tetrahydroxy-2,3-dihomo-3-oxacalix-4-arene and 1,1-dimethasila-17-crown-6.
摘要:
The application describes nitrogen-containing an oxacalixarene or calixarene derivative of formula I: ##STR1## wherein m'+m"=0-8n=0-8m'.gtoreq.1/2(m'+M")3.ltoreq.m'+m"+n.ltoreq.8if n=0, m'+m".gtoreq.4R.sup.3 is H, halogen, or hydrocarbyl, aryl, hydrocarbylaryl or a substituted derivative thereof and R.sup.3 may be the same or different on each aryl group;R.sup.1 and R.sup.15 which may be the same or different are H or hydrocarbyl, aryl, hydrocarbylaryl or a substituted derivative thereof;R.sup.2 is selected from:R.sup.4 which is H, or hydrocarbyl, aryl, hydrocarbylaryl or a substituted derivative thereof, ##STR2## wherein R.sup.5 and R.sup.6 which may be the same or different are H, or hydrocarbyl, aryl, hydrocarbylaryl, or a substituted derivative thereof,-OR.sup.1, wherein R.sup.1 is as defined aboveand R.sup.17 which is a residue of a hydrocarbyl, aryl, or hydrocarbylaryl group or of a substituted derivative thereof providing a bond to another oxacalixarene or calixarene derivative of formula I wherein R.sup.2 is R.sup.17.The derivatives may be polymer-bound. Use of the derivatives for sequestration of metals is also described.
摘要:
An encapsulating composition for electronic devices comprises a curable material such as an epoxy resin and an ion scavenger compound selected from certain calixarene or oxycalixarene compounds in which at least half of the phenolic groups have been substituted by specific groups and certain silacrown compounds. Exemplary ion scavenger compounds include ##STR1## the tetraethyl acetate of 7, 13, 19, 25-tetra-tertbutyl-27, 28, 29, 30-tetrahydroxy-2,3-dihomo-3-oxacalix-4-arene and 1,1-dimethasila-17-crown-6.
摘要:
A method of forming an electrode of a lithium ion secondary battery includes combining a binder and active particles to form a mixture, coating a surface with the mixture to form a coated article, translating the article along a first plane, cutting a first plurality of carbon fibers, each having a first average length, to form a second plurality of carbon fibers, each having a longitudinal axis and a second average length that is shorter than the first average length, inserting the second plurality of fibers into the mixture layer so that the longitudinal axis of each of at least a portion of the second plurality of fibers is not parallel to the first plane to form a preform, wherein the second plurality of fibers forms a truss structure disposed in three dimensions within the mixture layer, and heating the preform to form the electrode. An electrode is also disclosed.
摘要:
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.
摘要:
Polyvinyl acetal resin, use thereof as an adhesion promoting additive, method of producing same, and adhesive composition comprising sameAn acrylate- or methacrylate-substituted polyvinyl acetal resin of formula I: ##STR1## wherein the weight percentages of the X, Y and Z groups are variable, R is a hydrogen atom or an alkyl group, andR.sub.1 is hydrogen atom or a methyl group, is described.The resin of formula I is produced by acrylating or methacrylating a polyvinyl acetal resin of formula II: ##STR2## in which the weight percentages of the X', Y' and Z' groups are variable, particularly in the range 68 to 88% X, 6 to 19% Y' and 1 to 26% Z.The compounds of formula I are used to promote adhesion of acrylate or methacrylate ester based adhesive compositions to polyester plastic substrates.