11 results about "Biphenylol" patented technology

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.

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.

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.

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 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.

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 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 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.

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