133 results about "Diphenylphosphine oxide" patented technology

The present invention provides a compound of formula (I) for an organic electroluminescent device:

wherein X and Y are each independently selected for the group consisting of an alkyl substituted, aryl substituted or unsubstituted carbazole, indolocarbazole, triphenylsilyl and diphenylphosphine oxide represented by formula (A), (B), (C), (D) or (E),

in which R₁, R₂, and R₃ are each independently selected from the group consisting of a hydrogen, an alkyl having 1 to 15 carbons atoms, an aryl group having 6 to 15 carbons atoms, an alkyl substituted, an aryl substituted or unsubstituted triphenylsilyl, and a diphenylphosphine oxide represented by the formula (D) or (E); m and n are each independently 0 or 1, provided that m+n is 1 or more; and Ar₁ and Ar₂ are each independently selected from the group consisting of an alkyl substituted, aryl substituted or unsubstituted phenyl, tolyl, naphthyl, fluorenyl, anthracenyl, and phenanthryl.

The invention discloses highly dispersed sliver powder and conductive silver paste for film batteries. The highly dispersed sliver powder comprises polymer microspheres and nano-sliver coatings on the surfaces of the polymer microspheres. The polymer microspheres are made from methacrylic resin, photoinitiator 2, 4, 6-trimethylbenzoyl-diphenylphosphine oxide, and polyvinyl alcohol by ultraviolet irradiation. The conductive silver paste for film batteries is formed by well mixing the highly dispersed sliver powder with glass binder and organic solvent. The highly dispersed sliver powder has the advantages that the polymer microspheres are predictable and controllable in morphology and reasonable in size distribution by increasing or decreasing the time of UV (ultraviolet irradiation), the nano-silver powder synthetized in situ can be evenly and compactly coated on the surfaces of the polymer microspheres, the consumption of noble metal, the sliver powder, can be decreased, production cost is lowered, dispersibility and stability of the nano-sliver powder are also increased greatly, and conductivity of the sliver paste is further increased.

The invention belongs to the technical field of glue and in particular relates to ultraviolet curing glue and a preparation method thereof. The ultraviolet curing glue comprises 50-75 percent of oligomer, 0-13 percent of single functional group active diluent, 20-35 percent of multi-functional group active diluent and 1-5 percent of photoinitiator. The oligomer is aliphatic urethane acrylate resin with the functionality of 2-4; the single functional group active diluent is selected from IBOA, IBOMA, beta-CEA and THFA); the multi-functional group active diluent is selected from HDDA, TPGDA andTMPTA; and the photoinitiator is selected from 1-hydroxyl-cyclohexylbenzophenone and 2,4,6-trimethylbenzoyl-diphenylphosphine oxide. The invention also discloses a preparation method of the ultraviolet curing glue. The ultraviolet curing glue has the advantages of lower brittleness, favorable ultraviolet resistance, no ordor, small shrinkage stress, corrosion resistance and lower manufacture cost, is transparent and is suitable for mass production.

The invention discloses a phosphor silicon nitrogen ternary coordination fire retardant, a preparation method and an application. A structural general formula of the phosphor silicon nitrogen ternary coordination fire retardant is shown as a as formula I. According to the invention, an organic boron catalyst is used, diphenylphosphine oxide and its derivative are used for generating an addition reaction with silicon nitrogen alkane containing a carbon-carbon double bond to prepare a novel phosphor, silicon and nitrogen-containing compound. The compound has the characteristics of hydrolysis resistance and easy purification and the like. According to the invention, the phosphor element, the silicon element and the nitrogen element in a molecular structure of the compound can be individually performed a flame retardation effect, and simultaneously performed synergism, thereby the excellent flame retardation performance is provided on the general polymeric materials.

The invention relates to a photoinitiator for ultraviolet curing ink and a preparation method and application of the photoinitiator. The photoinitiator is prepared from 40 to 55 parts of free radical type photoinitiator, 5 to 10 parts by weight of cationic photoinitiator and 5 to 10 parts o by weight f photosensitizer; the free radical photoinitiator is prepared from 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, bis(2,4,6-trimethylbenzoyl)-phenyl phosphine oxide, 2-isopropylthioxanthone and 2-methyl-2-(4-morpholinyl)-1-[4-(methylmercapto) phenyl]-1-acetone; the cationic photoinitiator is prepared from mixed triaryl hexafluorophosphoric acid sulfonium salt and eta6-isopropylbenzene cyclopentadienyl iron hexafluorophosphate. The photoinitiator has good photo-initiation efficiency, can solve the problem of low initiation efficiency under LED (Light-Emitting Diode) light, is low-cost and has wide application prospect.

The invention discloses a waterproof UV glue which mainly comprises the following components in percentage by weight: 20%-40% of bifunctional modified polyurethane resin, 15%-35% of acrylic acid-grafted epoxy resin, 10%-25% of hydroxypropyl methacrylate, 10%-25% of isobornyl acrylate, 1%-5% of 1-hydroxy-cyclohexyl phenyl ketone, 0.1%-5% of 2,4,6-trimethybenzoyl- diphenylphosphine oxide and 0.05%-2% of a fluorescent agent. Meanwhile, in order to further improve the application performance of the waterproof UV glue, the waterproof UV glue also comprises 0.05%-5% of microcrystalline cellulose.

The invention relates to the field of high molecular materials, in particular to a halogen-free flame-retardant epoxy resin composition and application thereof. The composition comprises 100 parts ofepoxy resin, a halogen-free composite flame retardant provided with diphenylphosphine oxide flame-retardant groups, 5-15 parts of a main flame retardant, 0-10 parts of an auxiliary flame retardant, 2-30 parts of a curing agent and 0-1 part of a curing accelerating crosslinking agent. The composition further comprises a mixture of at least two of reinforced fibers, a flexibilizer, a filler, a silane coupling agent and a solvent. The composite flame retardant containing the diphenylphosphine oxide groups is high in flame-retarding efficiency and small in adding amount and has excellent compatibility and dispersity with the epoxy resin; and in the curing process, intermolecular dispersion with the epoxy resin can be realized, and the original transparent state of the epoxy resin is maintained. The finally cured flame-retardant resin composition has the advantages of low cost, high transparency, low water absorption rate, high glass conversion temperature, high thermal stability, low dielectric constant and dielectric loss, high flame retarding and the like.

The invention aims to provide a method for compounding 2,4,6-trimethylbenzoyl-diphenylphosphine oxide through 'one-pot process'. According to the preparation method, a sodium, ethanol, chlorodiphenylphosphine and 2,4,6-trifluoromethyl benzoyl chloride 'one-pot process' is firstly adopted for replacing the original diphenyl oxethyl phosphine and acyl chloride process for preparing 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, so that the method can greatly reduce the preparation steps and processes, has the characteristics of low cost, simplicity in operation and high yield and can more effectively meet the increasing market requirements at present.

The invention relates to the technical field of optical radiation free-radical polymerized new materials, especially to a novel synthesis technological process of commercial photoinitiator compounds of (diphenylphosphine oxide)(mesitylene)ketone and (phenylphosphine oxide)bis(mesitylene ketone). According to the invention, 1,3,5-trimethyl-2-(trichloromethyl)-benzene is used as a key raw material and is respectively subjected to a condensation reaction with corresponding organic phosphine precursors so as to prepare the target compounds. In comparison with a known technological route, the technology disclosed in the application has significant advantages such as novelty of the chemical reaction process, economical cost, competitiveness and environmental friendliness.

The invention discloses an organic molecule electron transmission material with a high triplet level. Electrophilic n-heterocyclic and diphenylphosphine oxide are introduced at the same time, aryl or fused ring aryl is connected with functional groups at two ends, and connection is conducted at the position with low conjugate degree. The invention further discloses a preparing method and application of the organic molecule electron transmission material with a high triplet level. The organic molecule electron transmission material with a high triplet level has the advantages of being easy to synthesize and purify, high in glass-transition temperature and high in LUMO and HOMO energy level, and can interact with cathode materials including metal and metallic oxides strongly.

The invention relates to a flame-retardant curing agent containing phosphorus and a P-C key structure, a preparation method of the flame-retardant curing agent and flame-retardant epoxy resin with the flame-retardant curing agent as raw materials and aims at solving the problems that existing flame retardants containing phosphorus are poor in heat stability, prone to hydrolysis and bad in compatibility with epoxy resin matrixes. The flame-retardant curing agent is a flame-retardant curing agent containing phosphorus and the P-C key structure. The method includes the steps that firstly, diphenylphosphine oxide and raw materials A are added into a four-port round-bottom flask, and substances in the flask are heated to be totally fused under nitrogen protection; secondly, solvents are added, react in a backflow state and are cooled to room temperature, the solvents are removed, obtained precipitate is dried after being washed, coarse products are obtained and recrystallized, and finally white powdery products are obtained. The flame-retardant curing agent is good in heat stability, not prone to hydrolysis and good in compatibility with epoxy resin matrixes. The flame-retardant curing agent is applied to the field of flame-retardant curing agents containing phosphorus.

The invention relates to a dibenzothiophene-based aromatic phosphine oxide compound and a preparation method and application thereof. The invention solves the problems that an electrophosphorescent device has low efficiency and low brightness because the conventional electrophosphorescent material has serious concentration quenching and triplet-triplet annihilation effects. The structural general formula of the compound is that: X is H or a diphenylphosphine oxide group. The compound is obtained by the steps of: preparing a derivative from dibenzothiophene, n-butyllithium, tetramethylethylenediamine and diphenylchlorophosphine, dissolving the derivative into CH2Cl2, adding H2O2 and reacting. The invention also relates to application of the compound to organic electroluminescent light-emitting diode devices and application of the compound used as a main material of a luminescent layer. An electroluminescent blue-light and green-light main material with high triplet excited-state energy level and good carrier injection and transmission capacity is obtained by modifying the diphenylphosphine oxide group onto a chromophore parent through a C-P saturated bond; and the prepared device has high turn-on voltage, brightness and efficiency stability.

The invention discloses an indenoanthracene derivative compound and application thereof and belongs to the technical field of organic electroluminescent materials. A general molecular formula of the compound is shown as a formula (I), wherein L1, L2 and L3 are phenylene or substituted phenylene, n is any integer in a range of 0 to 3, Ar1 and Ar2 are the same or different and each of the Ar1 and the Ar2 independently represents an electron donor group; X can be a C atom, an O atom, an S atom, an N atom and a Si atom; A represents a diphenylphosphine oxide molecule or dibenzyl boron molecule derivative. The compound provided by the invention is used as a doping material and/or a main material of an OLED (Organic Light Emitting Diode), and high brightness, low voltage, high efficiency and long service life of organic electroluminescence devices can be realized; a material prepared from the compounds has relatively high thermal stability, can be used for remarkably improving the luminescent stability of luminescent devices and is widely applied to OLED luminescent devices and display devices.

The invention belongs to the technical field of low dielectric resin compositions, and discloses a low dielectric resin composition with phosphorus-containing flame retardant and a prepreg, resin film, laminate and printed circuit board prepared therefrom. The composition comprises the following components: (A) phosphorus-containing flame retardant; (B) vinyl compound. The phosphorus-containing flame retardant has a structure as shown in formula (I).

In the present invention, diphenylphosphine oxide is derivatized, and prepared a phosphorus-containing flame retardant, which has no reactive functional groups, has better dielectric properties, and has high melting point, and upon combining with a vinyl compound, a resin composition is obtained, and a laminate having low thermal expansion ratio, high heat resistance, high glass transition temperature, and low dielectric constant and dissipation factor, can be made from the resin composition, and can effectively achieve the flame resistance effect of UL94 V-0 without using halogen-containing flame retardant, and can be used in the preparation of prepregs, resin films, resin coated coppers, flexible resin coated coppers, laminates and printed circuit boards.

A provided preparation method for benzoyldiphenyl phosphine oxide derivatives comprises the following steps: mixing a diphenylphosphine oxide derivative, a first solvent and a catalyst under an oxygen-free condition, so as to obtain a first reaction solution; dissolving a benzoic anhydride derivative in a second solvent, so as to obtain a second reaction solution; and mixing the first reaction solution and the second reaction solution to perform a nucleophilic reaction, so as to obtain the corresponding benzoyldiphenyl phosphine oxide derivative with the structure shown as a formula I. The provided preparation method for the benzoyldiphenyl phosphine oxide derivatives employs a one-step reaction, reaction steps are reduced, and further waste caused by incapability of 100% utilizing the raw materials and intermediates in the multiple reaction steps is reduced, and the yield of the final product is increased. Raw material waste reduction during reaction and selection on reaction conditions enable the yield of the preparation method is substantially improved, and the yield is between 80%-91%.

The invention discloses a green environment-friendly preparation method of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO). The method comprises the following steps: a. adding 2,4,6-trimethylbenzaldehyde and diphenylphosphine oxide into a dichloromethane-filled three-neck flask, and stirring to react at normal temperature to obtain a TPO intermediate; b. cooling the three-neck flask in a low-temperature water bath to 8-10 DEG C, sequentially adding a vanadium catalyst and an oxidizer hydrogen peroxide into the three-neck flask, stirring to react for 0.5 hour, putting the three-neck flask at normal temperature, and continuing stirring for 3-5 hours; and c. adding a sodium thiosulfate water solution into the three-neck flask, treating to remove the unreacted oxide to obtain a reaction solution, and carrying out separation purification on the reaction solution to obtain the TPO product. The clean environment-friendly H2O2 used as the oxidizer is matched with the vanadium catalyst to constitute the green environment-friendly oxidization system, thereby lowering the production cost, enhancing the product yield, being environment-friendly and being beneficial to implementing commercialized production.

The invention discloses a preparation technology and an application thereof for phosphorus containing phenolic resin. Diphenylphosphine oxide and derivative thereof are taken as a fire retardant; under a heating condition, the diphenylphosphine oxide and phenolic resin react to generate corresponding the phosphorus containing phenolic resin under a heating condition; the phenolic resin is taken asphenol type phenolic resin or bisphenol A phenolic resin. After the phosphorus containing phenolic resin prepared with the preparation technology is applied to produce a copper-clad plate, the flameretardant property reaches a V0 level.

The invention discloses a multifunctional modified tert-butyl carbazole phosphine oxide main material and a synthesis method and an application thereof, and relates to an organic electroluminescent material and a synthesis method and an application thereof, which are used for solving the problem that the turn-on voltage of an electroluminescent device applied to an organic electroluminescent main material is on the high side. Six kinds of main materials are available; in 2 kinds of main materials, one or two phosphine oxide functional groups with carrier transmission characteristic are introduced to a tert-butyl carbazole parent respectively; and in the other 4 kinds of main materials, one, two or three phosphine oxide functional groups with carrier transmission characteristic are introduced to a 9-phenyl tert-butyl carbazole parent respectively. The tert-butyl carbazole is used as the parent of the main material; since the diphenylphosphine oxide matrix structure has the conjugation breaking effect of the P=O group, the parent has relatively high triple-stage energy level, as well as certain electron injection and transmission capacity, and the luminous efficiency and brightness of a luminous device are improved after the parent is applied to the luminous device; and meanwhile, the turn-on voltage can be reduced to 2.4V.