7473-99-6Relevant articles and documents
Preparation method of photoinitiator
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Paragraph 0034-0073, (2021/10/13)
The invention discloses a preparation method of a photoinitiator. The preparation method comprises the following steps: acid chloride required for Fries reaction, aluminum trichloride and a solvent are mixed and then subjected to a Fourier reaction with benzene. Fries reaction intermediate purification method The Fourier reaction intermediate is mixed with chlorine for chlorination reaction, and the product of the chlorination reaction is subjected to gas-liquid separation to separate the gas. Reaction Section Step and The product purification step results in a photoinitiator finished product. To the technical scheme of the invention, the advantages of the traditional process of producing the photoinitiator are combined with the characteristics of the microchannel reactor to realize continuous preparation, the productivity can be improved, the production risk is reduced, the manpower and equipment investment are reduced, and the cost is further reduced.
New synthesis technology for photoinitiator1173
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Paragraph 0021; 0025; 0029, (2017/06/02)
The invention relates to a midbody isobutyrophenone of a photoinitiator1173 (2-hydroxy-2-methyl-1-phenyl-1-acetone) and a new synthesis technology for a photoinitiator1173. The new synthesis technology includes the steps that isobutylbenzene serves as a raw material, an oxidizing reaction is carried out with oxygen under the catalytic effect of catalyst cobalt salt or palladium salt, and the isobutyrophenone is obtained; the isobutyrophenone is further chloridized and hydrolyzed with a sodium hydroxide solution, and the photoinitiator1173 is obtained. The influence of the catalyst cobalt salt or palladium salt on isobutyrophenone production in the reaction is inspected, the material ratio in the isobutyrophenone and photoinitiator1173 production is determined, and the new technology is easy to operate and economical.
2-hydroxy-2-methyl-1-phenyl-1-propyl ketone synthesis process
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Paragraph 0010, (2017/06/21)
The present invention discloses a 2-hydroxy-2-methyl-1-phenyl-1-propyl ketone synthesis process, which is characterized in that isobutyric acid is adopted as a raw material, an acylation reaction, a Friedel-Crafts reaction, and an alkaline hydrolysis reaction are performed to obtain a 2-hydroxy-2-methyl-1-phenyl-1-propyl ketone crude product, and fine steaming is performed to obtain the 2-hydroxy-2-methyl-1-phenyl-1-propyl ketone finished product. According to the present invention, the process is reasonable, no sulfur dioxide gas emits during the production process, the environmental pollution caused by the produced sodium chloride is low, and the product yield is high.