28 results about "Biphenylol" patented technology

Embodiments provide bimodal polymerization catalyst systems comprising metallocene olefin polymerization catalysts and biphenylphenol polymerization catalysts made from biphenylphenol polymerization precatalysts of Formula I.

Embodiments are directed towards the use of a supported biphenylphenol polymerization catalyst made from a biphenylphenol polymerization precatalyst of Formula I via a gas-phase or slurry-phase polymerization process under gas-phase or slurry-phase polymerization conditions to make a polymer.

Disclosed is a biphenol metal complex. The structure thereof is as represented by formula I, wherein R1 and R1′ are each independently selected from hydrogen and a substituted or unsubstituted C1-C20 hydrocarbyl; R3-R7, R3′-R7′ are each independently selected from hydrogen and a substituted or unsubstituted C1-C20 hydrocarbyl, any two adjacent groups of R3-R7 are optionally linked to form a ring, and any two adjacent groups of R3′-R7′ are also optionally linked to form a ring; M and M′ are each independently selected from the Group 4 metals; each X is independently selected from the group consisting of a hydrocarbyl having 1 to 20 carbon atoms, hydride, amido, alkoxide, alkyl sulfide, alkyl phosphide, halide, diene, amine, phosphine, ether, and combinations thereof; m and n are independently an integer of from 1 to 4; and L is a divalent linking group.

The invention belongs to the technical field of doxycycline, and particularly relates to a veterinary drug doxycycline composition and a preparation process thereof, the veterinary drug doxycycline composition comprises 24%-26% of methanol, 3.5%-6.5% of oxytetracycline base, 0.03%-0.1% of methanol ammonia, 1.7%-3.2% of NBS, 24%-26% of 11 alpha-bromine-6, 12-hemiketal oxytetracycline, 7%-8% of HZSM-5, 24%-26% of toluenesulfonic acid and 3%-4% of palladium on carbon, the veterinary drug doxycycline composition further comprises catalysts, the catalysts comprise 2.7%-3.2% of titanium tetraisopropylate and 3.07%-4% of S-diphenol, and the reaction temperature is controlled to be 30-50 DEG C; the preparation method comprises the following steps: sequentially putting 100g of methanol, 10g of oxytetracycline base and 0.1 g of methanol ammonia into a reaction bottle, stirring for 30 minutes in an environment of 20-30 DEG C by using an ultrasonic stirrer, starting to cool to-10 to-15 DEG C, adding 5g of dried and crushed NBS, and carrying out dechlorination and asymmetric hydrogenation by using a self-made palladium-carbon catalyst, so that the yield and the chemical and stereoselectivity of the reaction are remarkably improved, the total yield reaches 53%, and the yield is up to 90%. The method has the advantages of high yield, good product quality and the like, and the doxycycline primary liquid is heated by heating equipment and lasts for a fixed time, so that the drug property of the doxycycline primary liquid is enhanced at a specific temperature, and the adverse reaction of drugs to animals is reduced.

The present invention addresses the problem of providing a highly crystalline polyether nitrile with which a molded article having high heat resistance and high strength can be obtained with high productivity at a typical mold temperature during injection molding of 200°C or lower. As a solution, provided is a polyether nitrile using 4,4'- biphenol and 2,6-dihalobenzonitrile, having a weight average molecular weight (Mw) of 45,000 or more and a glass transition temperature (Tg) of 190°C or less.

A process to prepare an alpha composition comprising a first ethylene / alpha-olefin / interpolymer fraction and a second ethylene / alpha-olefin / interpolymer fraction; said process comprising polymerizing, in one reactor, a reaction mixture, comprising ethylene and an alpha-olefin, a biphenyl phenol metal complex selected from Structure 1, as described herein, and a biphenyl phenol metal complex selected from Structure 2, as described herein; and alpha compositions prepared therefrom.

A method for preparing a biphenol dianhydride composition, comprising heating a first solution, the first solution comprising a biphenol tetracarboxylic acid of formula (I), wherein Ra, Rb, p and q are as defined herein; at least one of sodium ions, potassium ions, calcium ions, zinc ions, aluminum ions, iron ions, phosphate ions, sulfate ions, chloride ions, nitrate ions and nitrite ions; and a non-halogenated solvent. The first solution is heated under conditions effective to provide a second solution, the second solution comprising: the corresponding biphenol dianhydride; at least one of sodium ions, potassium ions, calcium ions, zinc ions, aluminum ions, iron ions, phosphate ions, sulfate ions, chloride ions, nitrate ions, and nitrite ions; and a non-halogenated solvent.

Provided is a polycrystalline body of biphenol type diglycidyl ether, including an epoxy compound represented by Formula (1), and having a crystallite size of 355 Å or more and 100000 Å or less, calculated from a peak having a diffraction angle (2θ) of 8.9 to 9.3 deg in a powder X-ray diffraction pattern measured with a CuKα ray. In Formula (1), each of R1 to R8 is independently a hydrogen atom, an alkyl group that may have a substituent and has 1 to 12 carbon atoms, an alkoxy group that may have a substituent and has 1 to 12 carbon atoms, an aryl group that may have a substituent and has 6 to 12 carbon atoms, an alkenyl group that may have a substituent and has 2 to 12 carbon atoms, or an alkynyl group that may have a substituent and has 2 to 12 carbon atoms.

The present invention discloses a composition for inhibiting oxidative stress injury and its application, which relates to the technical field of biomedicine. The composition includes ginsenoside CK and biphenol compounds; the biphenol compounds are magnolol or honokiol. The present invention finds through research that the combined use of ginsenoside CK and biphenol compounds (magnolol or honokiol) has a synergistic effect, and its medicinal effect is greater than that of using them alone, and has a significant improvement effect on oxidative stress and related diseases. The composition provided by the present invention can significantly reduce the production of ROS induced by LPS, reduce the release of NO, and effectively relieve inflammation and pain caused by ROS induced by acute mechanical injury. Moreover, the composition of the present invention has a compatibility and synergistic effect, which is significantly better than using drugs alone.

A process to prepare an alpha composition comprising a first ethylene / alpha-olefin / interpolymer fraction and a second ethylene / alpha-olefin / interpolymer fraction; said process comprising polymerizing, in one reactor, a reaction mixture, comprising ethylene and an alpha-olefin, a biphenyl phenol metal complex selected from Structure 1, as described herein, and a biphenyl phenol metal complex selected from Structure 2, as described herein; and alpha compositions prepared therefrom.

The invention discloses a 4-nitrobenzoate compound as well as preparation and application thereof. The method comprises the following steps: taking aniline as an initial raw material, obtaining a phenyl diazonium salt intermediate through diazotization of a sodium nitrite / hydrochloric acid system, further reacting the phenyl diazonium salt intermediate with biphenyl-2-phenol to obtain a 5-(phenylazo)-[1, 1 '-biphenyl]-2-phenol intermediate, and reacting the 5-(phenylazo)-[1, 1'-biphenyl]-2-phenol intermediate with p-nitrobenzoyl halide under the combined action of a catalyst and alkali to obtain the 5-(phenylazo)-[1, 1 '-biphenyl]-2-phenol. The invention relates to 1, 1 '-biphenyl]-2-yl 4-nitrobenzoate. The 5-(phenylazo)-[1, 1 '-biphenyl]-2-yl 4-nitrobenzoate can be subjected to catalytic hydrogenation reduction in the presence of a nickel catalyst to obtain a polyimide monomer diamine compound 5-amino-[1, 1'-biphenyl]-2-yl 4-aminobenzoate. The method is simple and convenient to operate, mild in process condition, small in pollution, high in synthesis efficiency, good in product purity and suitable for industrial large-scale production.

The invention relates to the technical field of membrane separation, in particular to a phthalazinone copolyether sulfone membrane which is formed by copolymerization of phthalazinone diphenol, dichlorodiphenyl sulfone and biphenol, the molecular structure of the phthalazinone copolyether sulfone membrane comprises sulfonyl and phthalazinone structural units, and the molar percentage of the phthalazinone diphenol is 20-40%. Along with the increase of the content of the phthalazinone structure in the phthalazinone copolyethersulfone, finger-shaped pores in the hollow fiber membrane disappear and become spongy pores, the membrane structure becomes compact, the surface of the hollow fiber membrane becomes a loose and porous structure, the hydrophilicity of the hollow fiber membrane is improved, the water contact angle of the hollow fiber membrane is reduced from 71.5 degrees to 58.5 degrees, and the water contact angle of the hollow fiber membrane is reduced from 71.5 degrees to 58.5 degrees. The porosity of the hollow fiber membrane is reduced, the water flux is firstly increased and then reduced, and the breaking strength of the membrane is improved.

This invention relates to the field of chemical technology and discloses a method for preparing phosphites. The method includes: (1) contacting 2,2'-biphenyl with phosphorus trichloride in the presence of a protective gas and an auxiliary agent to carry out a first coupling reaction; (2) adding bisphenol 2,2'-dihydroxy-4,4',6,6'-tetratert-butyl-1,1'-biphenyl to the reaction system obtained in step (1) to carry out a second coupling reaction; (3) mixing the phosphite sample to be purified obtained in step (2) with an extract, and then separating the mixture into solid and liquid components. The extract contains water and organic solvent A, the solubility of the phosphite molecule in the organic solvent at 25°C is less than 1 g / 100 mL, and the water content in the extract is at least 30% by volume. Using this method, the nitrogen content in the bisphosphite molecule can be reduced to below 1000 ppm, while the product purity is increased to above 99.4%, meeting the requirements for industrial applications.

The present disclosure relates to a polycrystalline body of biphenol type diglycidyl ether, including an epoxy compound represented by Formula (1), and having a crystallite size of 355 Å or more and 100000 Å or less, calculated from a peak having a diffraction angle (2θ) of 8.9 to 9.3 deg in a powder X-ray diffraction pattern measured with a CuKα ray, wherein in Formula (1), each of R1 to R8 is independently a hydrogen atom, an alkyl group that may have a substituent and has 1 to 12 carbon atoms, an alkoxy group that may have a substituent and has 1 to 12 carbon atoms, an aryl group that may have a substituent and has 6 to 12 carbon atoms, an alkenyl group that may have a substituent and has 2 to 12 carbon atoms, or an alkynyl group that may have a substituent and has 2 to 12 carbon atoms.

The invention relates to the technical field of battery diaphragms, and provides a high-ionic-conductivity diaphragm and a preparation method thereof. The high-ionic-conductivity diaphragm comprises the following components in parts by weight: 20-30 parts of polyethylene, 1-5 parts of a composite electrolyte, 60-80 parts of a pore-forming agent and 2-4 parts of a compatibilizer, the composite electrolyte is prepared from the following raw materials in parts by weight: 5 parts of oxide electrolyte, 1-3 parts of cyano-containing phenolic compound and 0.5-2 parts of silane coupling agent, the cyano-containing phenolic compound comprises p-cyano diphenol. According to the technical scheme, the problems of low liquid absorption rate and low ionic conductivity of the diaphragm for the lithium battery in the prior art are solved.

The application discloses a high-heat-resistance biphenyl phenolic aldehyde type epoxy resin and a preparation method and application thereof. The preparation method comprises the following steps: mixing phenol-phenyloligophenyl type resin, epichlorohydrin, a cosolvent I, an etherification catalyst and 10-20% sodium hydroxide water solution to perform an etherification reaction, adding 45-50% sodium hydroxide solution under a negative pressure of-0.08 to-0.06 MPa to perform a ring closure reaction, and obtaining a crude biphenyl phenolic aldehyde type epoxy resin through post-treatment; dissolving the crude biphenyl phenolic aldehyde type epoxy resin in a cosolvent II, adding a phase transfer catalyst and 10-20% sodium hydroxide water solution to perform a refining reaction, and obtaining the high-heat-resistance biphenyl phenolic aldehyde type epoxy resin through post-treatment. The phenol-phenyloligophenyl type resin is etherified by using a quaternary ammonium salt and a low-concentration lye in cooperation, and the refining reaction is performed, so that the obtained biphenyl phenolic aldehyde type epoxy resin is high in yield and significantly low in organic chlorine and total chlorine.

Techniques are provided for forming bio-based biphenol monomers (e.g., "bio-based BP") derived from bio-based naphtha and bio-based liquid crystal polymers ("bio-based LCPs") formed therefrom.

The present invention relates to a cyanobiphenol Al 3+ and Zn 2+ The fluorescent probe is prepared by first reacting 4'-hydroxybiphenyl-4-nitrile with hexamethylenetetramine under acidic conditions to obtain intermediate 1, then reacting 3-amino-2-hydroxyacetophenone with methoxyamine hydrochloride to obtain intermediate 2, and then reacting intermediate 1 and intermediate 2 to produce Al2O3, a cyanobiphenol. 3+ and Zn 2+ Fluorescent probe. The present invention relates to Al 3+ and Zn 2+ The preparation method of fluorescent probe is simple, low cost and high yield. In practical application, it has high recognition sensitivity, convenient detection, wide applicable pH range, strong anti-interference ability, can be identified by naked eye, which is beneficial to the detection of trace Al in the environment. 3+ and Zn 2+ Convenient detection.

The present invention addresses the problem of providing a resin composition and the like which can give a cured product having a low dielectric loss tangent and excellent adhesion strength with a conductor layer after exposure to a high-temperature, high-humidity environment, and which can exhibit good flexibility before curing. [Solution] A resin composition containing (A) an epoxy resin and one or more resins selected from the group consisting of (B) an active ester resin and (C) a radically polymerizable resin, the component (A) containing (A-1) a biphenol skeleton epoxy resin represented by general formula (1) and having an epoxy equivalent weight of 200 g / eq. Or more and (A-2) an epoxy resin that is in a liquid state at room temperature. [In the formula, R represents a hydrogen atom or a methyl group, and n represents an integer of 0-10].

The invention discloses a preparation method of low-absorbance phenol-biphenylene phenolic resin, which comprises the following steps: mixing raw materials including phenol, biphenyl compounds and a cocatalyst, and introducing inert gas from the bottom of a reaction container to carry out condensation polymerization, thereby obtaining the low-absorbance phenol-biphenylene phenolic resin. According to the invention, the inert gas is forcibly filled in the reaction process to take away the micromolecular by-products, and the cocatalyst is combined to improve the reaction efficiency and selectivity, so that the purification step is simplified, the molecular weight distribution of the product is controllable, the production efficiency is improved, and the cost is reduced. The prepared phenol-biphenylene phenolic resin shows the characteristic of low absorbance, especially has high transparency at the wavelength of 400nm, and widens the application in the fields of optics, coatings and the like.

The invention discloses a method for purifying electronic-grade biphenyl phenolic epoxy resin, and relates to the technical field of epoxy resin preparation, and the method is characterized by comprising the following steps: adding biphenyl phenolic into epichlorohydrin, stirring and dissolving, adding alkali liquor, and carrying out etherification reaction to obtain a product; alkali liquor is continuously added for a ring-closure reaction, generated salt is removed through water washing and filtered, then distillation treatment is carried out, and a crude product is obtained; and dissolving the biphenyl novolac epoxy resin, continuously adding alkali liquor for refining reaction, pickling and filtering, and carrying out distillation treatment to obtain the final biphenyl novolac epoxy resin. In the synthesis process, a low-boiling-point nontoxic solvent is adopted, the actual yield of the biphenyl novolac epoxy resin is high, the epoxy equivalent is low, and the biphenyl novolac epoxy resin is easy to separate by controlling the alkali liquor amount and the reaction temperature in the ring opening and ring closing stages, and meanwhile through a molecular sieve, a microporous filter membrane and a further refining reaction, the yield of the biphenyl novolac epoxy resin is improved. The generation of aged resin is effectively reduced, so that the contents of hydrolyzed chlorine, inorganic chlorine and organic chlorine are all at a lower level.

The invention relates to the field of ligand preparation, and discloses a preparation method of bidentate phosphite. The preparation method comprises the following steps: (1) mixing 2, 2 '-diphenol, phosphorus trichloride and a solvent I, and carrying out a first reaction to obtain a first reaction solution; (2) adding the first reaction liquid and bisphenol 2, 2-dihydroxybenzene into a reaction kettle; 2, 2 '-dihydroxy-4, 4', 6, 6 '-tetra-tert-butyl-1, 1'-biphenyl, an acid-binding agent, an auxiliary agent and a solvent II are mixed and subjected to a second reaction, and bidentate phosphite shown in the formula (1) is obtained. The preparation method provided by the invention is high in product yield and purity, low in content of impurities such as chloride ions and iron ions and short in reaction period, product purification does not need recrystallization, and the method is suitable for industrial production. The method is more suitable for amplified preparation.

The invention discloses high-ortho phenol-biphenylene phenolic resin and a preparation method thereof, and belongs to the technical field of phenolic resin synthesis. Phenol and 4, 4 '-biphenyl dimethyl ether are subjected to a condensation polymerization reaction under the action of a catalyst, a product obtained through the condensation polymerization reaction is washed and extracted, high-ortho phenol-biphenylene phenolic resin is recycled from an extracted organic phase, and raffinate is a water phase containing the catalyst; the catalyst is an acidic solution containing divalent metal sulfonate. The prepared high-ortho-position phenol-biphenylene phenolic resin has a higher melting point, the ortho-position substitution rate is larger than 70%, the high-ortho-position phenol-biphenylene phenolic resin has lower viscosity when being used for preparing epoxy resin, the catalyst, water washing liquid and removed phenol are recycled in the production process, and the method belongs to a clean phenolic resin production method.

The present invention addresses the problem of providing a highly crystalline polyether nitrile with which a molded article having high heat resistance and high strength can be obtained with high productivity at a typical mold temperature during injection molding of 200°C or lower. As a solution, provided is a polyether nitrile using 4,4'- biphenol and 2,6-dihalobenzonitrile, having a weight average molecular weight (Mw) of 45,000 or more and a glass transition temperature (Tg) of 190°C or less.

The present invention relates to a novel room-temperature phosphorescent luminescent material with mechanochromic properties and a preparation method thereof. The reaction structure is shown in FIG1 ; carbazole and 1,4-dibromobutane are used as raw materials, acetone is used as a solvent, potassium hydroxide is added, and the reaction is stirred; an intermediate is obtained after extraction, drying, rotary evaporation, and separation and purification; the obtained intermediate, cyanobiphenol or cyanonaphthol, acetone, potassium iodide, and potassium carbonate are mixed for reaction; and 4'-(4-(9H-carbazole-9-yl)butoxy)-[1,1'-biphenyl]-4-carbonitrile or 6-(4-(9H-carbazole-9-yl)butoxy)-2-naphthonitrile having mechanochromic properties and room-temperature phosphorescent emission is obtained after extraction, drying, rotary evaporation, and separation and purification; the molecular structure does not contain metal elements, heavy atoms such as bromine and iodine, and has no distorted D-A conformation, and has high potential application value in the fields of anti-counterfeiting, information encryption, organic electroluminescent diodes, and biosensor imaging.

A solution polymerization process for preparing ethylene / α-olefin / interpolymer, and an article comprising components formed from a composition containing the interpolymer. [Solution] A solution polymerization process for preparing ethylene / α-olefin / interpolymer comprises polymerizing a reaction mixture containing ethylene, α-olefin, a solvent, and a biphenylphenol metal complex selected from the following structures 1, in a single reactor at a reactor temperature of 150°C or higher. JPEG2026062729000023.jpg63170

The present invention belongs to the field of semiconductor material technology, and specifically relates to a low melting temperature solid additive containing a mesogen, and its preparation method and application. The present invention uses a derivative of biphenol and 1,8-dibromooctane as the main raw materials, and obtains a solid additive material with a low melting temperature through organic synthesis, and is applied in high-efficiency organic solar cell devices. Experiments show that the low melting temperature solid additive provided by the present invention can significantly improve device performance in organic solar cell devices, achieving a photoelectric conversion efficiency far exceeding that of additive-free binary organic solar cells, and the device stability is also significantly improved, with broad application prospects.