53611-01-1Relevant academic research and scientific papers
Method for synthesizing 1, 2, 4-cyclohexane triformic anhydride through catalytic hydrogenation of trimellitic anhydride
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Paragraph 0017-0023, (2022/01/05)
The invention relates to a method for synthesizing 1, 2, 4-cyclohexane triformic anhydride through catalytic hydrogenation of trimellitic anhydride in the technical field of chemical production, which comprises the following steps: dissolving trimellitic anhydride in a proper amount of organic solvent to obtain a trimellitic anhydride solution; mixing a trimellitic anhydride solution and a hydrogenation catalyst according to a certain proportion, adding the mixture into a high-pressure kettle, heating to a reaction temperature of 100-300 DEG C, and continuously introducing hydrogen into the high-pressure kettle; keeping the reaction temperature in the high-pressure kettle at 100-300 DEG C, wherein the pressure in the high-pressure kettle is 2.0-5.0 MPa, and performing a catalytic reaction on trimellitic anhydride and hydrogen to generate 1, 2, 4-cyclohexanetriformic anhydride; and after the reaction is completed, filtering and recovering the hydrogenation catalyst, steaming out part of the solvent, and finally recrystallizing to obtain a 1, 2, 4-cyclohexane triformic anhydride solid. The production process is short in time consumption, simple to operate, easy to control and low in cost.
LIQUID CYCLOHEXANE-TRICARBOXYLIC ACID ANHYDRIDE
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Page/Page column 5-7, (2008/06/13)
Trans, trans-1,2,4-cyclohexanetricarboxylic acid-1,2-anhydride represented by the following formula 1: a cyclohexanetricarboxylic anhydride being liquid at ordinary temperatures which contains such a anhydride, and a production method thereof. The cyclohexanetricarboxylic anhydride being liquid at ordinary temperatures is produced by melting 1,2,4-cyclohexanetricarboxylic acid and/or 1,2,4-cyclohexanetricarboxylic acid-1,2-anhydride at 180 to 300°C under heating. Since the cyclohexanetricarboxylic anhydride is liquid at ordinary temperatures, it is advantageously used in industrial applications such as raw materials or modifiers for coating compositions, adhesives, shaped articles, sealing resins for photosemiconductors, curing agents and polyimide resins, raw materials for plasticizers and lubricant oils, intermediates for medicines and agricultural chemicals, raw material for coating resins, raw material for toner resins, etc.
