- Α - hydroxy ketone compound low priced high-efficient synthetic method
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The invention discloses a cheap and efficient synthesis method of an alpha-hydroxyketone compound. The synthesis method is characterized in that a carbonyl compound undergoes an oxidation hydroxylation reaction at 10-120DEG C under normal pressure with iodine simple substance, N-bromosuccimide, copper bromide, bromine simple substance, hydrogen bromide, N-iodosuccimide or hydrogen iodide as a catalyst, sulfoxide as an oxidant, water or sulfoxide as a hydroxy source and sulfoxide, ethyl acetate, N,N-dimethyl formamide, acetonitrile, toluene, 1,4-dioxane, 1,2-dichloroethane, tetrahydrofuran or H2O as a solvent, and converts into the alpha-hydroxyketone compound in a high selectivity manner. Compared with traditional synthesis methods, the method disclosed in the invention has the advantages of simple operation, high yield, simple conditions, easy purification, small waste discharge amount, simple reaction apparatus, and easy industrial production. The method has wide applicability and can be used for synthesizing various alpha-hydroxyketone compounds.
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Paragraph 0234-0237
(2017/08/25)
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- Production process of bi[4-(2-hydroxyl-2-methyl propionyl)phenyl]methane
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The invention relates to a production process of bi[4-(2-hydroxyl-2-methyl propionyl)phenyl]methane. According to the production process, diphenylmethane serves as a starting main raw material, iso-butyryl chloride easy to purchase serves as a secondary raw material, and all the materials are subjected to acylation, halogenation and hydrolysis to obtain a target product. The product process needs three steps of reaction to obtain the target product, but in the actual production process, the next step of reaction can be directly conducted only by simple treatment after each step of reaction ends up until the final product is obtained, and an intermediate in each step does not need to be taken out, so the production process is similar to a one-pot method, but does not belongs to the one-pot method. The production process has the advantages that the raw materials are easily available, and production equipment is simple and low in investment; the production process is simple to operate and short in production cycle; the obtained product is snow-white and the content can reach 98.5% or above; the production comprehensive cost is low and the content of the obtained product can reach 98.5% or above; the production comprehensive cost is low and the production process is more suitable for industrialization.
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Paragraph 0014; 0015; 0016; 0017; 0018; 0019-0023
(2017/08/25)
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- Phase change inks containing amide gellant compounds with aromatic end groups
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Disclosed is a phase change ink comprising a colorant, an initiator, and a phase change ink carrier, said carrier comprising at least one radically curable monomer compound and a compound of the formula wherein R1 and R1′ are the same, and wherein R1 and R1′ are each an aromatic group; and wherein R2 and R2′ and R3 each, independently of the others, are alkylene groups, arylene groups, arylalkylene groups, or alkylarylene groups; or wherein, in embodiments, R1 and R1′ can be the same or different, and wherein R1 and R1′ each, independently of the other is an alkyl group having a least one ethylenic unsaturation, an arylalkyl group having at least one ethylenic unsaturation, an alkylaryl group having at least one ethylenic unsaturation, or an aromatic group, provided that at least one of R1 and R1′ is an aromatic group; and provided that neither of R1 or R1′ is a photoinitiator group. Also disclosed herein is a method of printing with the phase change ink.
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Page/Page column
(2013/08/28)
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