15059-25-3Relevant academic research and scientific papers
Preparation method of vitamin B13
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Paragraph 0018; 0020-0021, (2020/07/15)
The invention provides a preparation method of vitamin B13. The preparation method specifically comprises the following steps: step 1, carrying out ammonolysis reaction on maleic anhydride and urea toprepare an ammonolysis product; and step 2, oxidizing the ammonolysis product prepared in the step 1 under the catalysis of a catalyst to obtain vitamin B13. The method is a novel chemical reaction,and under the condition that liquid bromine is not used, the ammonolysis product of maleic anhydride and urea can be efficiently converted into vitamin B13. The method has the advantages of simple operation, cheap and easily available reagents, greenness, safety, high efficiency and environmental protection, and is suitable for industrial production.
Synthesis method of maleimide
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Paragraph 0016; 0018; 0019, (2018/06/21)
The invention relates to the technical field of maleimide synthesis, in particular to a synthesis method of maleimide. According to the method, maleic anhydride serves as an initial raw material, andN-carbamoylmaleimide is obtained through an aminolysis reaction of urea and a dehydration reaction of acetic anhydride; in the presence of triethylamine, N-carbamoylmaleimide is heated and decomposedinto maleimide. The whole process is simple in operation, the product quality is high, and industrial production is easy.
PROCESS FOR STRAIGHTENING KERATIN FIBRES WITH A HEATING MEANS AND DENATURING AGENTS
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, (2010/03/02)
The invention relates to a process for straightening keratin fibres, comprising: (i) a step in which a straightening composition containing at least two denaturing agents is applied to the keratin fibres, (ii) a step in which the temperature of the keratin fibres is raised, using a heating means, to a temperature of between 110 and 250° C.
NOVEL POLYMERIZABLE ACYL IMIDAZOLIDINONE MONOMERS
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Page/Page column 9, (2010/11/29)
Acyl imidazolidinones and compositions containing the same are disclosed, which are particularly suitable for use as self-crosslinkers and can also be used as wet adhesion properties, especially in latex-based polymer systems. Processes for preparing such compounds, compositions containing the same, as well as additional uses thereof are also disclosed.
