2 results about "Diphenyl ketone" patented technology

The application provides a preparation method of a benzaldehyde aniline compound and relates to the technical field of organic synthesis. The preparation method provided by the application comprises the following steps: in a solvent, with an alkali as a promoter, under an atmosphere with an oxygen concentration of 20v100%, the temperature of a reaction system is controlled to be 50-70 DEG C, a diphenyl ketone compound I is reacted with an aniline compound II to generate a benzaldehyde aniline compound III, and the reaction product is subjected to column chromatography separation to obtain a pure benzaldehyde aniline compound III. The method has the beneficial effects that the reaction is simple, green and environment-friendly, the use of an expensive transition metal catalyst is avoided, the reaction condition is mild and controllable, and an environment-friendly byproduct is generated.

The invention provides a preparation method of polyaryletherketone resin, and belongs to the technical field of high polymer materials. The dibenzyl ketone is used as a solvent for preparing the polyaryletherketone resin, on one hand, the dibenzyl ketone is low in melting point and high in boiling point, reactants can be fully dissolved under the relatively mild heating condition, production energy consumption can be reduced, and the production cost is reduced; on the other hand, the dibenzyl ketone is easily dissolved in ethanol, so that the residual quantity of a solvent in the polyaryletherketone is easily reduced; and on the other hand, the dibenzyl ketone serving as a food additive has extremely low toxicity, and the requirement of the implant-grade PEEK can be met without repeated extraction and purification during the production of the implant-grade PEEK material. Furthermore, a two-step method is adopted, high solid content is adopted in the first polycondensation reaction, the problems of low reaction rate and long reaction time in a traditional polyaryletherketone synthesis route are solved, low solid content is adopted in the second polycondensation reaction, and high-molecular-weight polyaryletherketone resin can be obtained.