A kind of compound bis-(biguanidino-p-phenyl) methane and its synthesis method and application
A technology of diaminodiphenylmethane and its synthesis method, which is applied in the fields of chemical instruments and methods, preparation of organic compounds, organic chemistry, etc. It can solve the problems of limited application range, poor compatibility of epoxy resin, high curing temperature, etc., and achieve product High utilization rate, mild reaction conditions, easy post-treatment effect
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Embodiment 1
[0025] A kind of compound bis-(biguanidinium p-phenyl) methane, its molecular structural formula is as follows:
[0026]
[0027] The synthetic method of above-mentioned compound bis-(biguanidino-p-phenyl) methane, concrete steps are as follows:
[0028] (1) Before the reaction, pass into argon gas to get rid of the air in the reaction system, and dicyandiamide, diaminodiphenylmethane, hydrochloric acid (37%) are mixed in the solvent water according to the molar ratio of 2:1:2.5 to make the pH of the reaction system The value is controlled between 3.5, and the reflux condensing device is turned on while argon gas is being supplied, and the temperature is raised to 120° C., stirred and reacted at a constant temperature for 3 hours, and the obtained mixed solution is the crude product of bis-(biguanidino-p-phenyl)methane;
[0029] (2) The crude bis-(biguanidino-p-phenyl)methane product was washed with distilled water for 3 times, and dried to obtain a pure bis-(biguanidino-p-...
Embodiment 2
[0032] The synthetic method of compound two-(biguanidino-p-phenyl)methane, concrete steps are as follows:
[0033] (1) Under the protection of argon, dicyandiamide, diaminodiphenylmethane, phosphoric acid (37%) are mixed in the solvent water according to the molar ratio of 6:3:2, so that the pH value of the reaction system is controlled at 3, and the In the case of argon gas, the temperature was raised to 130° C. and stirred under constant temperature reflux for 4 hours, and the resulting mixed solution was the crude product of bis-(biguanidino-p-phenyl)methane;
[0034] (2) The crude product of bis-(biguanidino-p-phenyl)methane was subjected to impurity removal treatment to obtain a light yellow solid, which was pure bis-(biguanidino-p-phenyl)methane product, and the yield was 80.8%.
Embodiment 3
[0036] The synthetic method of compound two-(biguanidino-p-phenyl)methane, concrete steps are as follows:
[0037] (1) Under the protection of argon, dicyandiamide, diaminodiphenylmethane, and hydrochloric acid (37%) are mixed in the solvent water according to the molar ratio of 2:1:2.5, so that the pH value of the reaction system is controlled at 4, and the In the case of argon gas, the temperature was raised to 130° C. and stirred under constant temperature reflux for 4 hours, and the resulting mixed solution was the crude product of bis-(biguanidino-p-phenyl)methane;
[0038] (2) The crude product of bis-(biguanidino-p-phenyl)methane was subjected to impurity removal treatment to obtain a light yellow solid, which was pure bis-(biguanidino-p-phenyl)methane product, and the yield was 83.4%.
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