Method for directly preparing disproportionated rosin potassium soap with solid content of 80 percent from solid disproportionated rosin

Abstract

The invention discloses a method for directly preparing disproportionated rosin potassium soap with the solid content of 80 percent from solid disproportionated rosin, and relates to the technical field of deep processing of chemical rosin. The method comprises the following steps: adding 95-105 parts of solid disproportionated rosin and 55-80 parts of potassium hydroxide solution with concentration of 20-25 percent into a saponification reaction kettle; heating to 80-100 DEG C to perform a saponification reaction for 1-2 hours while uniformly stirring; cooling to 70-80 DEG C after the saponification reaction is finished; and discharging to obtain the finished product. Compared with the prior art, the method has the advantages of more stable, safer and more efficient preparation process; the disproportionated rosin potassium soap as a finished product is lighter in color and better in quality.

Description

technical field [0001] The invention relates to the technical field of rosin deep processing, in particular to a method for directly preparing disproportionated rosin potassium soap with a solid content of 80% from solid disproportionated rosin. Background technique [0002] Disproportionated Rosin Potassium Soap is a kind of rosin deep-processed product with large output, mainly used as emulsifier for rubber. In the synthetic rubber industry, polystyrene butadiene rubber, neoprene, nitrile rubber, ABS and styrene-butadiene / nitrile latex all use disproportionated rosin potassium soap as emulsifier. The use of disproportionated rosin as an emulsifier can enhance the cohesive force of rubber, improve the heat resistance, wear resistance and tear resistance, and when mixed with natural rubber, the adhesion performance is greatly improved. [0003] At present, most manufacturers prepare disproportionated rosin potassium soap by first dissolving disproportionated rosin at high t...

AI Technical Summary

Problems solved by technology

There are many problems in the preparation of disproportionated rosin potassium soap by this method. In reality, it is difficult to control the addition amount and addition rate of potassium hydroxide solution and disproportionated rosin liquid, even if a metering pump is used.

Once the addition and addition rate of the potassium hydroxide solution and the disproportionated rosin liquid are not well controlled, no matter whether the potassium hydroxide solution or the disproportionated rosin liquid is excessive in the reactor, the whole preparation process will fail, and the reactor will vibrate violently. Not only will the equipment be damaged, but all the materials in the reactor will agglomerate and become waste products, which not only increases the production cost, but also brings great difficulty to the subsequent cleaning of the reactor