Method for preparing disproportionated rosin
A technology of disproportionated rosin and rosin, which is applied in the field of preparation of disproportionated rosin, can solve the problems of long preparation time and high cost, and achieve the effects of low production cost, less side reactions and accelerated reaction
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Embodiment 1
[0020] The preparation method of the disproportionated rosin of the present embodiment is: the rosin is evacuated and decompressed and distilled to obtain refined rosin;
[0021] Add the refined rosin in the cavitation machine, adjust the pressure of the cavitation machine to be 0.2 MPa, then add the reaction solvent and molecular sieve successively; the weight of the molecular sieve is 0.04% of the total weight of the rosin; open the cavitation machine, and adjust to the first The first temperature, the second temperature, and the third temperature carry out the polymerization reaction; wherein, the first reaction temperature is 100°C, the reaction time at the first reaction temperature is 10 minutes, the second reaction temperature is 110°C, and the second reaction temperature is 100°C. The reaction time is 10 minutes, the third reaction temperature is 120° C., and the reaction time at the third reaction temperature is 15 minutes; filter, remove the catalyst, and obtain dispr...
Embodiment 2
[0024] The preparation method of the disproportionated rosin of the present embodiment is: the rosin is evacuated and decompressed and distilled to obtain refined rosin;
[0025] Add the refined rosin in the cavitation machine, adjust the pressure of the cavitation machine to be 0.25 MPa, then add the reaction solvent and molecular sieve successively; the weight of the molecular sieve is 0.03% of the total weight of the rosin; open the cavitation machine, and adjust to the first The first temperature, the second temperature, and the third temperature carry out the polymerization reaction; wherein, the first reaction temperature is 105°C, the reaction time at the first reaction temperature is 9 minutes, the second reaction temperature is 120°C, and the reaction time is 9 minutes at the second reaction temperature The reaction time is 7 minutes, the third reaction temperature is 125° C., and the reaction time at the third reaction temperature is 10 minutes; filter and remove the ...
Embodiment 3
[0028] The preparation method of the disproportionated rosin of the present embodiment is: the rosin is evacuated and decompressed and distilled to obtain refined rosin;
[0029] Add the refined rosin in the cavitation machine, adjust the pressure of the cavitation machine to be 0.3 MPa, then add the reaction solvent and molecular sieve successively; the weight of the molecular sieve is 0.02% of the total weight of the rosin; open the cavitation machine, and adjust to the first The first temperature, the second temperature, and the third temperature carry out the polymerization reaction; wherein, the first reaction temperature is 110°C, the reaction time at the first reaction temperature is 8 minutes, the second reaction temperature is 115°C, and the reaction time is 8 minutes at the second reaction temperature The reaction time is 5 minutes, the third reaction temperature is 130° C., and the reaction time at the third reaction temperature is 7 minutes; filter and remove the ca...
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