4 results about "Anthrone" patented technology

[Technical Problem] To provide a rosin phenolic resin composition with good color tone. [Technical Means] A rosin phenolic resin composition comprising a rosin phenolic resin as a reactant of rosin (A) and phenol (B), and at least one compound (C) selected from the group consisting of xanthones, thioxanthones, acridinones and anthrones.

The technical scheme of the present application discloses a plastic film for providing high-quality light environment, which comprises the following components in parts by weight: 9,9-dianthraquinone 4-5 parts, pyrene anthrone 6-7.5 parts, anthracene-D10 4-6 parts, auxiliary agent 7.2-10.6 parts, and resin 70-80 parts. The preparation method comprises the following steps: S1, uniformly mixing 9,9-dianthraquinone, pyrene anthrone and anthracene-D10, heating to melting in an oxygen-free reaction kettle, cooling, and then crushing by a high-speed pulverizer to obtain a powder with a particle diameter of less than 100 nm; S2, mixing the powder with the auxiliary agent in a double-screw extruder, and then shearing and granulating to obtain a high-quality light environment additive master batch; and S3, mixing the high-quality light environment additive master batch with the resin, and preparing a plastic film by a flow casting and rolling process or a blowing process. The prepared plastic film effectively improves the photosynthetic rate of plants and significantly improves the quality and yield of plants.

This invention belongs to the field of fine chemicals and related chemical technologies, and relates to a method for preparing spirofluorenanthrone compounds. Using 2-phenylbenzyl chloride and its derivatives and 2-bromobenzophenone and its derivatives as raw materials, the mixture is reacted in a solvent at 150 °C for 48 hours under the action of a catalyst, ligand, and base to obtain the spirofluorenanthrone compound. The method of this invention can synthesize spirofluorenanthrone compounds in one step and has advantages such as simple operation, high conversion rate, mild conditions, no use of heavily polluting reagents, and more diverse product structures. Low-temperature phosphorescence testing of the product revealed its potential application value in the field of organic optoelectronic materials such as OLEDs.

The invention discloses a cladosporium fulvum genetically engineered bacterium with high yield of protohypericin as well as a construction method and application of the cladosporium fulvum genetically engineered bacterium. According to the cladosporium fulvum genetically engineered bacterium constructed by the invention, a hygromycin resistance gene hph is introduced into cytochrome P450 enzyme RugGT452P-R160D, and short-chain dehydrogenase ClaC, dehydratase ClaB and anthrone oxidase ClaH2 genes in cladosporium fulvum ACCC37291 are knocked out and replaced; meanwhile, the copy number of a transcription factor ClaE and a transcription auxiliary factor ClaA gene is increased, so that the genetically engineered bacterium is obtained. The strain is cultured for 10 days under the conditions that the temperature is 22 DEG C, the speed is 300 rpm and the ventilation capacity is 2 vvm, and the original hypericin fermentation yield reaches 2.06 g / L. The cladosporium fulvum genetically engineered bacterium constructed by the invention can be used for efficiently preparing the protohypericin through a fermentation method and is environment-friendly.