206 results about "Benzidine" patented technology

The present invention provides a light-emitting element that includes a pair of electrodes, and an organic compound that has a glass-transition temperature of 150° C. or more, preferably 160° C. or more and 300° C. or less, and a metal oxide that are provided between the pair of electrodes, or includes a pair of electrodes, and a compound having a spiro ring and a triphenylamine skeleton and a metal oxide that are provided between the pair of electrodes. It is a feature that the compound has a spiro ring and a triphenylamine skeleton is a benzidine derivative represented by a general formula (1) In the formula, R¹ is hydrogen or an alkyl group having 1 to 4 carbon atoms.

This invention relates to a transition metal nickel catalyst component after ethylene polymerization. Component (A) is halogenated [N, N-(R bed -2-pyridine methylene)-substitution benzidine] nickel complexes, component (B) is alumina alkyl. The catalysis system is used to ethylene polymerization. There are high polymerization activity and high branching degree of complexes, and double peak feature of the complexes.

Perfluorinated polyimides (and co-polyimide) compositions, particularly films are disclosed, comprising at least 50 mole percent of a polymeric repeat unit derived from contacting 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BDPA) and 2,2′-bis(trifluoromethyl) benzidine (TFMB) monomers. The perfluorinated polyimide (and co-polyimide) films of the invention have an in-plane coefficient of thermal expansion (CTE) between −5 and +20 ppm/° C. and a average light transmittance percent of from about 65.0 to about 99.0 (on a 75-micron thick film basis). The films of the present invention were converted to a polyimide using a chemical conversion method instead of typically employed thermal conversion step thus yielding these desirable properties. The films of the present invention can be an excellent substrate in an optical display device and can be used to replace rigid glass substrates. Finally, the polyimide films of the invention can also be used to manufacture flexible display devices (e.g., cellular phones, personal digital assistants, portable video games, laptops, and the like).

A single reagent system and a method to detect and measure oxidizing adulterants in bodily fluid being screened for drugs of abuse are disclosed. The system comprising a strip containing 0.05 to 0.2 micromole/25 sq. mm. of a benzidine derivative and is used to detect sodium hypochlorite (bleach), chlorine, hydrogen peroxide, sodium bromide, sodium iodide, sodium nitrite, and pyridinium chlorochromate adulterants in urine, sweat, saliva, blood or other bodily fluids during screening for drugs of abuse.

An organic light-emitting diode device (OLED) comprises a cathode, a light-emitting layer, and an anode in that order, in which there is located a first layer (L1) adjacent to the light-emitting layer on the anode side and a second layer (L2) adjacent to L1 on the anode side, in which:

(a) layer L1 comprises a benzidine derivative (B1) having an oxidation potential of 0.8-0.9 V; and

(b) layer L2 comprises a benzidine derivative (B2) having an oxidation potential greater than 0.7 V and exhibiting a glass transition temperature, Tg, of greater than 125° C.

The invention discloses a positive type photosensitive polyimide resin composition. The composition includes alkaline solubility polyimide (a), a photosensitizer (b) and a cross-linking agent (c). The cross-linking agent is composed of one or two of a benzoxazine compound and a compound with two or more epoxy groups contained in one molecule according to any ratio. The weight percentage of the alkaline solubility polyimide (a), the photosensitizer (b) and the cross-linking agent (c) is 100:10-50:5-20. According to the composition, 2,2-bis[4-(5-amino-2-pyridyloxy)phenyl]hexafluoropropane or 2,2-bis[4-(5-amino-2-pyridyloxy)phenyl] propane, 3,3-di-tert-butyl benzidine and siloxane diamine are used as diamine components for preparing the alkaline solubility polyimide resin. The prepared positive photosensitive polyimide resin composition is high in transmittance, low in coefficient of thermal expansion, high in heat resistance and excellent in photosensitive property.

The invention discloses a ZnCuInS/ZnS quantum dot white light LED (Light Emitting Diode) based on compensation light emitting and a manufacturing method thereof. The LED is in a dual-layer light-emitting structure and comprises a glass substrate, a transparent ITO (Indium Tin Oxide) electrode deposited on the glass substrate, a PEDOT:PPS(Poly(3,4-ethylenedioxy Thiophene):(Poly(4-styrenesulfonate)) layer which is formed on the ITO electrode by spin coating, a Poly-TPD (N,N'-bis(4-butylpheny)-N,N'-bis(phenyl) benzidine) layer which is formed on the PEDOT:PPS layer by spin coating to generate blue and green light, a ZnCuInS/ZnS quantum dot layer which is formed on the Poly-TPD layer to generate red light as well as an Al electrode, wherein the PEDOT:PPS layer is a buffer layer; the ITO electrode is transparent and is used as a positive electrode of the LED; the Poly-TPD layer generates the blue and green light; and the ZnCuInS/ZnS quantum dot layer generates red light which is complemented with the blue and green light which are generated by the Poly-TPD layer to form white light. According to the ZnCuInS/ZnS quantum dot white light LED disclosed by the invention, a non-toxic metallic ZnCuInS/ZnS quantum dot is used as a main light-emitting layer, and thus the requirement of environment protection is met; and the ZnCuInS/ZnS quantum dot white light LED has the advantages of favorable color rendering property, simple preparation process, low cost and the like.

A poly(amide-imide) copolymer film having a tensile modulus of greater than or equal to 5.4 GPa, and a yellowness index of less than or equal to 3.6, wherein the poly(amide-imide) copolymer film is a reaction product of an aromatic dianhydride including biphenyl tetracarboxylic dianhydride and 4,4′-hexafluoroisopropylidene diphthalic dianhydride, an aliphatic dianhydride including 1,2,3,4-cyclobutane tetracarboxylic dianhydride, an aromatic diamine including 2,2-bis(trifluoromethyl) benzidine, and an aromatic dicarbonyl compound including terephthaloyl dichloride.

The invention relates to a method for preparing a yellow pigment for liquid ink. The method comprises the following steps of : (1), adding one portion of 3.3'dichloro benzidine di hydrochloride into 5.3 portions of thirty percent of aqueous hydrochloric acid solution to disperse for one hour; adding 75 portions of ice water to cool to minus five to zero DEG C, using 2 portions of forty percent of sodium nitrite for diazotization and the terminating potassium iodide starch test paper shows dark blue; adding 0.1 to 0.3 portion of sulfamic acid until the potassium iodide starch test paper shows colorless for later use; (2), dissolving 2 portions of AAOT and 0.1 to 0.3 portion of second coupling component together in 6 portions of forty percent of Oxyhydrogen sodium solution under the temperature between twenty to thirty-two DEG C until the solution is transparent and adjusting the temperature to between eight and ten DEG C to acid out, that is, adding one hundred portions of water and three portions of acetic acid into an acetic acid thinning tank and stirring evenly to acid out slowly and obtain a coupling component; (3), adding diazo liquid into the coupling component about one hundred and twenty minutes to one hundred and fifty minutes when the PH value is between six and six point five and the temperature is between ten and fifteen DEG C until the complete coupling, then adding 0.01 to 0.05 portion of surface active agent and stirring; heating to eighty to ninety DEG C and preserving the heat for one to two hours, filtering and conducting pigmentation treatment on a filter mass. The method is simple in technology and remarkable in effect.

The invention relates to a method for preparing 2,2'-bis(trifluoromethyl)-4,4'-diaminobiphenyl capable of being used as a liquid crystal material from 2,2'-bis(trifluoromethyl)-4,4'-dinitrobiphenyl by reduction reaction. According to the specific technical scheme, the method comprises the following steps: carrying out coupling reaction of 2-bromo-5-nitrobenzotrifluoride in the presence of a transition metal (Pd, Cu, Ni) catalyst to obtain 2,2'-bis(trifluoromethyl)-4,4'-dinitrobiphenyl; and catalyzing by a Cu oxide or metal Pa in the hydrogen atmosphere to obtain 2,2'-bis(trifluoromethyl)-4,4'-diaminobiphenyl. The process for preparing 2,2'-bis(trifluoromethyl)-4,4'-diaminobiphenyl has the advantages of less emission of the three wastes and high yield.

The invention provides a preparation method of a cross-linking polypyrrolone-sulfonated polyimide segmented copolymer proton exchange membrane. The method includes the steps that 3,3'-diaminobenzidine and excess 1,4,5,8-naphthalene tetracarboxylic dianhydride react to obtain anhydride-naphthalene-capped prepolymer, then 1,4,5,8-naphthalene tetracarboxylic dianhydride and excess 2,2'-bis(4-sulfonic phenoxy)benzidine react to obtain amino-capped prepolymer, finally, the anhydride-naphthalene-capped prepolymer and the amino-capped prepolymer are copolymerized according to equal mole to obtain a high-molecular-weight polypyrrolone-sulfonated polyimide segmented copolymer, and after membrane formation and prone exchange, polyphosphoric acid is used for further cross-linking so that the cross-linking polypyrrolone-sulfonated polyimide segmented copolymer proton exchange membrane can be obtained. The prepared cross-linking polypyrrolone-sulfonated polyimide segmented copolymer proton exchange membrane has the advantages of being high in mechanical strength and conductivity, low in swelling ratio and good in free radical oxidization resistance.

A white polyimide film comprises a polyimide base polymer and a coloration filler homogeneously distributed in the white polyimide film by reacting a diamine component with a dianhydride component and a coloration filter. The diamine component can include 2,2′-bis(trifluoromethyl)benzidine, and the dianhydride component can include 3,3′,4,4′-biphenyltetracarboxylic dianhydride and 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride. The coloration filler can include TiO₂, Al₂O₃, CaCO₃, CaSO₄, SiO₂, BN, AlN and clay. The white polyimide film has a coefficient of thermal expansion (CTE) less than about 60 ppm/° C. in a temperature range between about 100° C. and about 200° C. , an elongation rate between about 5% and about 60%, and a b*-value between about 0 and about 15. In some embodiments, a method of manufacturing the white polyimide film is also described.

The invention relates to a novel bi-carbodiimide compound and a preparation method thereof. The preparation method comprises the steps of: carrying out addition reaction on 3,3',5,5'-tetra-alkyl benzidine and aryl isothiocyanate at a certain temperature in an organic solvent, preparing a dithiobiurea intermediate within 6-10h, adding 30wt% alkaline solution into the suspension solution, stirring at 30 DEG C, dropwise adding 10wt% oxidizing agent water solution within 2-3h, controlling the dropwise adding temperature to be not higher than 50 DEG C, stirring and reacting for 3-4h at 40 DEG C after the oxidizing agent water solution is completely added dropwise, washing by using water, carrying out suction filtering, removing impurity, layering the filtrate, remaining an organic layer, distilling under reduced pressure, recovering organic solvent to obtain a crude product, re-crystallizing the crude product by using methanol, drying, so as to obtain white crystals bi-carbodiimide compound. As an anti-bydrolysis stabilizing agent, the bi-carbodiimide compound is manly added in polyurethane and polyester elastomers.

An organic light emitting display (OLED) device includes: an insulating substrate; a first electrode on the insulating substrate; a second electrode on the first electrode; a light-emitting layer between the first electrode and the second electrode; a hole common layer between the first electrode and the light-emitting layer; an electron common layer between the second electrode and the light-emitting layer; and a scattering layer on the insulating substrate and having a non-planar surface, wherein the scattering layer includes at least one of benzene, naphthalene, anthracene, tetracene, pentacene, amine, benzidine, biphenyl, carbazole, pyridine, bipyridine, imidazole, phenanthroline, phenylborane, pyrimidine, or triazine, and the base material of the scattering layer includes a substituent including at least one of a benzoyl group, a carboxyl group, an aminophenoxyl group, a tricabonate group, or a styryl group.

The invention relates to a polymer material used for 3D printing. The polymer material comprises polyurethane acrylate, epoxy resin, ethyl cellulose, polyethylene wax, wollastonite powder, hydrogenated abietinol, epoxy acrylate, 2-hydroxy-4-methoxybenzophenone, trioctyl trimellitate, dipropylene glycol diacrylate, benzidine, polyoxyethylene laurate, nano-nickel oxide, poly(butyl acrylate), trimesic acid, isodecyl acrylate, barium stearate and calcium stearate. The prepared material has higher tensile strength and tensile modulus, retains good toughness, has good performance indexes, such as elongation at break and impact strength, not only has rather high toughness but also has higher heat resistance and good usability.

The invention discloses an N, N'-diphenyl-N-(9, 9-dimethyl-2-fluorenyl)-N'-(9, 9-dimethyl-7'-(2''-naphthyl)-2'-fluorenyl)-benzidine and a synthesis method thereof. The method uses 9, 9-dimethyl-2-acetyl aminofluorene, 9, 9-dimethyl-2-bromine fluorine and 2-bromonaphthalene as starting materials for respectively preparing three segments. Finally, the three segments are respectively processed with a Ullmann condensation reaction and a Suzuki coupling reaction, and then, a final product is obtained through purification. The product prepared by a mode provided by the invention has higher heat stability and lower crystallinity, so that, when the product is used as a hole transmission material, too much holes in a luminescent layer are reduced, and service life of an OLED material can be prolonged. Additionally, a test result shows that purity of the product can be more than 99%, yield is high, and cost is low, so that the product is suitable for industrial production.

A testing elements for the calorimetric determination of oxidizable gas and/or vapor components in gas mixtures is provided. The testing element contains, besides usual oxidizing agents, at least one redox indicator, which is in the oxidized form. The redox indicator is preferably a benzidine derivative according to the general formulain which the radicals R are identical or different and denote a hydrogen, alkyl, aryl, halogen, trifluoromethyl, cyano, nitro, dialkylamino, ester, sulfoxyl ester, alkyloxy or aryloxy, X denotes a halogen, Y denotes a trifluoromethyl, cyano, nitro, dialkylamino, ester, sulfoxyl ester, alkyloxy or aryloxy, n is an integer from zero to three, and m equals 5-n. The testing elements are preferably designed as detector tubes that contain carrier materials, to which the oxidizing reagents and redox indicators are applied.

Disclosed is an electroluminescent device comprising a cathode, an anode, and located therebetween a light emitting layer (LEL) containing (1) a host material that comprises a N,N,N′,N′-tetra-aromatic benzidine group substituted in at least one position ortho to the biphenyl linkage between the phenyl groups of the benzidine nucleus and (2) a phosphorescent light emitting material, wherein the triplet state energy of the benzidine nucleus is higher than the triplet state energy of the phosphorescent emitting material.

The invention discloses a combination composed of SEBS recycled materials. The combination comprises sulfonated SEBS recycled materials, MAH-g-PP, sulfonated polybenzimidazole modified graphene oxide, 2, 2'-bis(4-carboxyl phenoxy)biphenyl-4,4'-diamine and 1-10 weight parts of 2, 2'-bis(4-(1H-benzimidazole-2-base) phenoxy) benzidine. The invention further discloses a high-strength halogen-free flame-retardant insulating material obtained prepared from the combination and a preparation method of the high-strength halogen-free flame-retardant insulating material.

The invention provides a novel I-type human immunodeficiency virus (HIV-1) infection enzyme test-free reagent kit. The reagent kit comprises A, HIV-1gp41 protein, B, a blank enzyme linked plate, C, acid eluent, D, goat anti-human immunoglobulin G (IgG) marked with horseradish peroxidase, E, tetramethyl benzidine (TMB) color development solutions and F, stop solutions.

The invention relates to the field of organic synthesis, in particular to a preparation method of fluorine-containing benzidine. The invention provides the preparation method of the fluorine-containing benzidine. The preparation method comprises the following steps: performing a dehydration reaction on a compound shown as a formula II and a compound shown as a formula III to obtain a compound shown as a formula IV; performing a reaction on a compound shown as a formula V and metal magnesium or metal zinc to obtain a compound shown as a formula VI; coupling the compound shown as the formula VIand the compound shown as the formula IV, and performing acidic hydrolysis to obtain a compound shown as a formula I. By a synthesis method of the fluorine-containing benzidine, provided by the invention, the raw material cost is low, a reaction can be performed on a chlorine-containing substrate to synthesize the target fluorine-containing benzidine, and in the synthesis process, use of a precious metal catalyst is not required and preparation of corresponding phenylboronic acid through a metal reagent is also not required, so that the technological production cost is further reduced; in addition, by the preparation method provided by the invention, the condition is mild, the reaction conversion rate is high, the atomic economy is good, and during post-treatment, a high-purity product canbe obtained through simple recrystallization.

The invention discloses a salt-dye separating nanofiltration membrane as well as a preparation method and application thereof. According to the preparation method, an ultrafiltration membrane is used as a basement membrane; 2,2'-benzidinedisulfonic acid is used as a water-phase monomer; trimesoyl chloride is used as an organic-phase monomer to be dissolved in an organic solvent; a polyamide selecting layer is prepared and obtained through a water phase-organic phase interfacial polymerization method. According to the preparation method, the nanofiltration membrane with suitable charge performance and an appropriate membrane aperture is obtained through the regulation of monomer concentration, polymerization time, pH (potential of Hydrogen) and the like; by means of a Donnan effect and aperture sieving action, a dye and an inorganic salt are subjected to separation treatment; while an organic macromolecular dye can be effectively intercepted, ions of the inorganic salt are enabled to pass through to a greater extent; in comparison with a conventional commercial membrane, the water consumption is greatly reduced; the operating time is also obviously shortened. In addition, the nanofiltration membrane prepared by the preparation method has the advantages of being higher in mechanical strength, better in stability and easy to wash, and the like; the treatment of salt-dye wastewater can be effectively realized.

The invention discloses a wash-free production process for jeans. The wash-free production process for the jeans comprises the following steps: (1) sizing; (2) printing; (3) steaming; (4) tailoring; (5) sewing; and (6) performing afterfinish. The wash-free production process for the jeans disclosed by the invention combines the modern computer technology, the chemical technology, the mechanical automation technology, the printing technology and the like perfectly, and has the following three advantages that the cost is low, and the produced jeans are 5 to 20 yuan unequally cheaper than those produced by the conventional method; the quality is high, the used dye is activated dye, the color fastness reaches level 4 and higher than that of the indigo and sulfur dye, and the jeans are water washing resistant and colorfast and look new for a long time; and the pollution is low, the water consumption is low, and particularly the jeans are not required to be subjected to color stripping treatment by using a large amount of heavy metal compounds of lead, cadmium and the like and nonyl phenol, octyl phenol, perfluorooctane sulphonate, benzidine, formaldehyde and the like in the prior art.

We describe a new two-step culture method for mass production in vitro of erythroid cells from either CD34<+> (10<5 >cells/mL) or light-density (10<6 >cells/mL) cells purified from the blood of normal donors and thalassemic patients. The method includes (i) culture of the cells in the presence of dexamethasone and estradiol (10<-6 >M each) and (ii) the growth factors SCF (50 ng/mL), IL-3 (1 ng/mL), and EPO (1 U/mL). In their proliferative phase, these cultures generated about 1-2x10<7 >erythroblasts for each milliliter of blood collected from normal donors or thalassemic patients. They were composed mostly (90%) of CD45<low>/glycophorin (GPA)<neg>/CD71<low >cells at day 7, 50-60% of which became CD45<neg>/GPA+/CD71<high >by days 15-20. However, when cells from days 7 to 12 of the proliferative phase were transferred in differentiation medium containing EPO and insulin, they progressed to mature erythroblasts (>90% benzidine<pos >and CD45<neg>/GPA<+>/CD71<medium>) in 4 days. Because of the high number of erythroid cells that are generated from modest volumes of blood, this method will prove useful in donor-specific studies of erythroid differentiation.