Method for synthesizing phenolic resin
A synthesis method and technology of phenolic resin, applied in chemical instruments and methods, chemical/physical/physical chemical process, chemical/physical process, etc., can solve the problems of complicated process, increased production cost, environmental pollution, etc.
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Embodiment 1
[0113] Embodiment 1: the synthesis of phenolic resin
[0114] The implementation steps of this embodiment are as follows:
[0115] A. Raw material mixing
[0116] Under a nitrogen atmosphere and a temperature of 10°C, let o-cresol and formaldehyde be mixed uniformly at a molar ratio of 1.0:1.2 to obtain a mixed solution:
[0117] B. Preparation of catalyst
[0118] A phosphoric acid catalyst aqueous solution with a concentration of 4% by weight was prepared under the condition of a temperature of 50°C.
[0119] C. Synthesis
[0120] The mixed solution obtained in step A is pumped into the preheater preheated by Bayer-Ehrfeld Microtechnology Company under the trade name Miprowa to reach 80 °C; the catalyst solution obtained in step B is pumped into the Bayer-Ehrfeld Preheating to 30°C in a modular preheater by Feld Microtechnologies under the trade name Miprowa;
[0121] Then, according to the mass ratio of the solute in the catalyst solution to the phenol compound of gene...
Embodiment 2
[0125] Embodiment 2: the synthesis of phenolic resin
[0126] The implementation steps of this embodiment are as follows:
[0127] A. Raw material mixing
[0128] Under the condition of nitrogen atmosphere and temperature 100°C, m-cresol and paraformaldehyde were mixed uniformly according to the molar ratio of 1.0:4.0 to obtain a mixed solution:
[0129] B. Preparation of catalyst
[0130] An aqueous oxalic acid catalyst solution with a concentration of 15% by weight was prepared under the condition of a temperature of 90°C.
[0131] C. Synthesis
[0132] The mixed solution obtained in step A is pumped into the modular preheater under the trade name Miprowa by Bayer-Ehrfeld Microtechnology Company to preheat to 150°C; the catalyst solution obtained in step B is pumped into the Preheating to 90°C in a modular preheater by Feld Microtechnologies under the trade name Miprowa;
[0133]Then, according to the mass ratio of the solute in the catalyst solution to the phenolic com...
Embodiment 3
[0137] Embodiment 3: the synthesis of phenolic resin
[0138] The implementation steps of this embodiment are as follows:
[0139] A. Raw material mixing
[0140] Under the conditions of nitrogen atmosphere and temperature 15°C, let p-ethylphenol and trioxane be mixed uniformly according to the molar ratio of 1.0:0.5 to obtain a mixed solution:
[0141] B. Preparation of catalyst
[0142] An aqueous acetic acid catalyst solution with a concentration of 1% by weight was prepared under the condition of a temperature of 10°C.
[0143] C. Synthesis
[0144] The mixed solution obtained in step A is pumped into the preheater of the Miprowa modular preheater produced by Bayer-Ehrfeld Microtechnology Company to preheat to 30°C; the catalyst solution obtained in step B is pumped into the Preheating to 50°C in a modular preheater by Feld Microtechnologies under the trade name Miprowa;
[0145] Then, according to the mass ratio of the solute in the catalyst solution and the phenol c...
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