5 results about "N-propylbenzene" patented technology

In general, present invention concerns an integrated lignocellulose-to-chemicals biorefinery, enabling production of renewable n-propylbenzene, phenolic oligomers, and carbohydrate pulp from lignocellulosic biomass. And it concerns an integrated biorefinery, enabling production of renewable n-propylbenzene, phenolic oligomers, and carbohydrate pulp from lignocellulosic biomass.

The invention discloses an anethole synthesis method, and relates to the technical field of fine chemical engineering, and the anethole synthesis method comprises the following steps: 1, taking 4-n-propyl anisole as an initial raw material, and oxidizing the reaction by using air under a solvent-free condition to obtain p-methoxypropiophenone; 2, reducing the p-methoxypropiophenone into 1-(4-methoxyphenyl)-1-propanol by taking aluminum isopropoxide as a catalyst and isopropanol as a reducing agent; and 3, by taking concentrated sulfuric acid as a dehydrating agent, removing hydroxyl of the 1-(4-methoxyphenyl)-1-propanol to obtain anethole. The method has the beneficial effects that air is used for oxidation in the first step, no solvent is used, reaction conditions are simple, post-treatment is convenient, and the reaction conversion rate is high; in the second step, Meerwein-Ponndorf-Verley reduction reaction is used for the first time, dangerous processes such as hydrogenation reduction or hydroboration reduction are avoided, reaction conditions are mild, aftertreatment is simple, and the reaction conversion rate is high.

The invention relates to the technical field of synthesis of organic compounds, in particular to a synthesis method of 3-n-propyl phenol, which comprises the following steps: (1) synthesis of 3-propenylphenol: taking m-hydroxybenzaldehyde as a raw material, reacting with ethyltriphenylphosphorus bromide (Wittig reagent) under the action of potassium tert-butoxide in a mixed solvent (with a volume ratio of 13: 3: 1) of petroleum ether / THF / ethylene glycol dimethyl ether (DME) to obtain 3-propenylphenol; after quenching with hydrochloric acid, purifying by using a ZnCl2-AlCl3 composite salt ethanol solution (with a molar ratio of 3: 1) to remove a by-product phosphorus oxytriphenolate so as to obtain 3-propenylphenol with the purity of greater than or equal to 98.5%, and rectifying a water phase to recover a solvent; (2) synthesis of 3-n-propyl phenol: 3-aminopropyltriethoxysilane modified mesoporous SiO2 loaded Raney nickel is taken as a catalyst, anhydrous sodium acetate is added as a cocatalyst, hydrogenation is carried out in ethanol at normal pressure and normal temperature, the catalyst can be repeatedly used for more than or equal to 5 times after washing, drying and hydrogen activation, and a product is subjected to reduced pressure distillation to obtain the 3-n-propyl phenol.

This invention discloses a method for synthesizing 1,4-bis[4',6'-bis(4-n-propylphenoxy)-1',3',5'-triazine-2'-oxy]benzene, belonging to the field of compound preparation technology. The method sequentially includes the preparation of disodium hydroquinone, the formation of an intermediate, a one-pot condensation reaction under a phase transfer catalytic system, and an end-capping reaction. By pre-converting hydroquinone to its disodium salt form, the reactivity of the phenoxy anion is improved; triethylamine is used to control the monosubstituted reaction of cyanuryl chloride, introducing a structurally well-defined intermediate; condensation and end-capping are completed in a carbonate-based green solvent using a tetrabutylammonium bromide phase transfer catalyst, making the inorganic salt easy to precipitate and separate. Compared with existing technologies, this invention has simplified reaction steps, lower system viscosity, lower inorganic salt loading, and convenient post-processing. The obtained product has high yield, excellent purity and color, and is suitable for industrial-scale production.

The invention relates to the technical field of nucleating agents, and particularly discloses a high-performance nucleating agent composition for polyolefin resin. The composition comprises 1 ', 4'-bis [4 ', 6'-bis (4-n-propylphenoxy)-1 ', 3', 5 '-triazine-2'-oxy] benzene, a beta-crystal form inducer, a crystallization rate enhancer, a dispersion synergist, a lubricant and a heat stabilizer. The multiphase composition can simultaneously regulate and control the crystal form distribution, the nucleation density, the grain size and the crystal growth rate of a polyolefin system, so that a uniform and fine microcrystalline structure is easier to form in a melt stage of a material, the composition can obviously improve the crystallization temperature and the crystallization rate of resin, and the transparency and the surface gloss are obviously improved; meanwhile, the dimensional stability and the mechanical property of the product can also be improved.