摘要:
A composition includes a functionalized fluorescent dye. The functionalized fluorescent dye includes an isothiocyanate-containing dye that is functionalized with a functional group. The functional group includes a primary amine. The functionalized fluorescent dye can be mixed with a fluid to form a tracer fluid for tracing fluid flow in a subterranean formation.
摘要:
Fluorescent phenyl xanthene dyes are described that comprise any fluorescein, rhodamine or rhodol comprising a particular C9 phenyl ring. One or both of the ortho groups on the lower C9 phenyl ring is ortho substituted with a group selected from alkyl, heteroalkyl, alkoxy, halo, haloalkyl, amino, mercapto, alkylthio, cyano, isocyano, cyanato, mercaptocyanato, nitroso, nitro, azido, sulfeno, sulfinyl, and sulfino. In one embodiment, halo and/or hydroxy groups are used. Optimal dyes contain a lower C9 phenyl ring in which both ortho groups are the same and the lower ring exhibits some form a symmetry relative to an imaginary axis running from the phenyl rings point of attachment to the remainder of the xanthene dye through a point para to the point of attachment. The phenyl xanthene dyes may be activated. Furthermore, the phenyl xanthene dyes may be conjugated to one or more substances including other dyes. The phenyl xanthene dyes are useful for a number of purposes, including labels for use in automated DNA sequencing as well the formation of fluorescent “bar codes” for polymeric particles used in the multiplexed analysis of analytes.
摘要:
A fluorescent dye comprising a xanthene-derived fluorophore having the formula (I) wherein R1, R2, R3, R4, R5 and R6 are independently selected from H, alkyl, alkoxy, alcohol, ether, alkenyl, alkenoxy, aryl, alkaryl, aralkyl and amido, except that R1, R4 and/or R5 is not H when bonded to Y, Y1 or Y2, respectively; X is either O− or S−; and at least one of Y, Y1, Y2, Y3, Y4 and Y5 is a group for covalently bonding the dye, optionally through. the use of a coupling agent, to a target molecule, and is otherwise H. The dye may be covalently attached to a target molecule to form a complex, and the dye and/or complex finds use in cell analysis techniques, particularly pH measurement and analysis of kinetics of migration.
摘要:
The invention describes uses of various acid-base indicators in combination with consumer products, such as herbicides, where upon application the surface treated is visualized by color and then, with time, the color disappears.
摘要:
Fluorescent phenyl xanthene dyes are described that comprise any fluorescein, rhodamine or rhodol comprising a particular C9 phenyl ring. One or both of the ortho groups on the lower C9 phenyl ring is ortho substituted with a group selected from alkyl, heteroalkyl, alkoxy, halo, haloalkyl, amino, mercapto, alkylthio, cyano, isocyano, cyanato, mercaptocyanato, nitroso, nitro, azido, sulfeno, sulfinyl, and sulfino. In one embodiment, halo and/or hydroxy groups are used. Optimal dyes contain a lower C9 phenyl ring in which both ortho groups are the same and the lower ring exhibits some form a symmetry relative to an imaginary axis running from the phenyl rings point of attachment to the remainder of the xanthene dye through a point para to the point of attachment. The phenyl xanthene dyes may be activated. Furthermore, the phenyl xanthene dyes may be conjugated to one or more substances including other dyes. The phenyl xanthene dyes are useful for a number of purposes, including labels for use in automated DNA sequencing as well the formation of fluorescent nullbar codesnull for polymeric particles used in the multiplexed analysis of analytes.
摘要:
A process for the preparation of new dyestuff compositions which contain one or more basic dyestuffs in the form of dyestuff bases from the series of the triarylmethane, indoldiarylmethane, azine, oxazine, thiazine or xanthene dyestuffs or one or more basic dyestuffs of the series of the azo, anthraquinone, phthalocyanine, styryl, quinophthalone, benzoxanthene, naphthoylene-benzimidazole, naphthalimide or nitro series, carrying a primary, secondary or tertiary amino group or a guanidino or hydrazino group, as well as one or more non-ionic or slightly cationic surface-active agents and, optionally, water and/or an organic solvent miscible with water, which process comprises synthesizing the dyestuff in the surface-active agent optionally containing water and/or an organic solvent miscible with water, and then adding, if necessary, water and/or a solvent miscible with water and a further surface-active agent, this process of the invention having the advantage that an intermediate isolation, drying or grinding of the dyestuffs contained in the dyestuff compositions defined above is not necessary, so that the dyestuffs need not be introduced as substance into the surface-active agent and the solvent in a process wherein compositions of this type are prepared by a usual mixing, kneading or melting process; moreover, higher dyestuff yields are obtained in the dyestuff synthesis, and it allows to prepare dyestuff compositions from dyestuffs which are difficult to be isolated in substance after synthesis and often precipitate as oily or smeary products. The dyestuff compositions obtained according to the process of the invention, which are pastes or liquids, have a high stability upon storage. After being diluted with an aqueous solution of an amount at least equivalent to the dyestuff of an inorganic or organic acid, as well as, optionally, after the addition of dyeing and/or printing auxiliaries, the novel dyestuff compositions are suitable for dyeing or printing textile material containing acid groups.
摘要:
METHOD FOR DEACTIVATING A PHOTOSENSITIVE COMPOSITION, WHICH COMPOSITION IS CHARACTERIZED BY FORMING COLOR ON IRRADIATION WITH ULTRAVIOLET LIGHT AND BEING DEACTIVATED AGAINST COLOR FORMATION ON IRRADIATION WITH LIGHT OF LONGER WAVELENGTHS, E.G., VISIBLE LIGHT RADIATION. THE METHOD COMPRISES EXPOSING THE SURFACE OF THE PHOTOSENSITIVE COMPOSITION TO BE DEACTIVATED TO BOTH ULTRAVIOLET AND VISIBLE LIGHT RADIATION, WITH THE INTENSITY OF THE ULTRAVIOLET RADIATION BEING AN AMOUNT UP TO THE MAXIMUM AMOUNT SAID SURFACE OF THE COMPOSITION CAN ABSORB WITHOUT UNDERGOING SUBSTANTIAL COLOR FORMATION, THE INTENSITY OF THE VISIBLE LIGHT RADIATION BEING EFFECTIVE FOR DEACTIVATION, WHEREBY THE RESISTANCE OF THE COMPOSITION TO COLOR FORMATION ON SUBSEQUENT EXPOSURE TO ULTRAVIOLET LIGHT IS EITHER INCREASED OR THE TIME REQUIRED TO ACHIEVE A PARTICULAR DEGREE OF SUCH RESISTANCE IS DECREASED.
摘要:
Diarylmethane dyestuffs of the general formula WHEREIN: Me is a cation selected from the group consisting of H, an onium group, or the cation of a metal salt, EACH OF R1 and R2 is an aromatic radial free of sulphonic acid groups, at least one of R1 and R2 being substituted by at least one ortho- and para-directing substituent selected from the group consisting of alkyl, halogen, amino, hydroxyl, and alkoxy groups, and EACH OF X, Y and Z is hydrogen or one of said ortho- and paradirecting substituents, at least one of them being different from hydrogen, or Y and Z together are the atoms necessary to close a condensed ring system, ARE EFFECTIVE SENSITIZING DYES FOR SENSITIZING PHOTOCONDUCTIVE ZINC OXIDE WHEN APPLIED FROM AN AQUEOUS COATING MEDIUM. Preferably, the coating medium also contains a water-soluble binder for the zinc oxide.
摘要:
The dyeing or printing of polymers of acrylonitrile, polymers of as.-dicyanoethylene, or acid-modified aromatic polyesters, or acid-modified superpolyamides by using as a dyestuff a triarylmethane compound which is free from sulphonic acid and carboxylic acid groups, and has the formula
IN WHICH R is alkyl, aralkyl, cycloalkyl or aryl; R1 is hydrogen, alkyl, aralkyl or cycloalkyl; R2 is alkyl, aralkyl, cycloalkyl or aryl; R1 and R2 together with the nitrogen atom, or R1 or R2 with a carbon atom in the O-position in the ring A may form a heterocyclic ring; R3 is hydrogen, alkyl, aralkyl, aryl, alkoxy, aralkoxy, aryloxy, alkylmercapto, arylmercapto, halogen, carboxylic acid ester radical, carbonamido, sulphonamido, cyano, nitro, alkylsulphonyl, aralkylsulphonyl, arylsulphonyl, or acyl; and X is the radical of an anion.
摘要翻译:通过使用不含磺酸和羧酸基团的三芳基甲烷化合物作为染料,通过使用丙烯腈聚合物,二氰基乙烯的聚合物或酸改性的芳族聚酯或酸改性的超聚酰胺的染色或印花,以及 具有式I,其中R是烷基,芳烷基,环烷基或芳基; R1是氢,烷基,芳烷基或环烷基; R2是烷基,芳烷基,环烷基或芳基; R1和R2与氮原子一起形成,或者在环A中的O位具有碳原子的R 1或R 2可以形成杂环; R 3是氢,烷基,芳烷基,芳基,烷氧基,芳烷氧基,芳氧基,烷基巯基,芳基巯基,卤素,羧酸酯基,碳酰氨基,磺酰氨基,氰基,硝基,烷基磺酰基,芳烷基磺酰基,芳基磺酰基或酰基; X是阴离子的基团。