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Preparation method of disproportionated rosin potassium soap with solid content of 25 percent

A technology of disproportionated rosin potassium soap and disproportionated rosin, which is applied in chemical instruments and methods, resin soap manufacturing, detergent compositions, etc., can solve the problem of difficult control of the addition amount and addition rate of potassium hydroxide solution and disproportionated rosin liquid, Improve production costs, cleaning work difficulty and other issues, to achieve the effect of reducing impurities and by-products, improving success rate and reducing operation difficulty

Inactive Publication Date: 2013-12-18
WUZHOU PINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
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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

Method used

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  • Preparation method of disproportionated rosin potassium soap with solid content of 25 percent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Gum rosin is vacuum-distilled to obtain refined gum rosin; then add palladium / carbon catalyst to carry out disproportionation reaction for 2.5 hours, the reaction temperature is 280°C, after the reaction finishes, filter and remove palladium / carbon catalyst to obtain solid disproportionated rosin; obtain solid disproportionated rosin and The potassium hydroxide solution of 48% is put into reactor and carries out the saponification reaction of 0.5 hour to obtain this solid content 25% disproportionated rosin potassium soap, and reaction temperature is 62 ℃;

[0022] The mass ratio of described solid disproportionated rosin to potassium hydroxide solution is: 2.8:1; 2 Protect.

Embodiment 2

[0024] Gum rosin is vacuum distilled to obtain refined gum rosin; then add palladium / carbon catalyst to carry out disproportionation reaction for 3 hours, the reaction temperature is 275 ° C, after the reaction finishes, filter and remove palladium / carbon catalyst to obtain solid disproportionated rosin; obtain solid disproportionated rosin and 45% potassium hydroxide solution is put into reactor and carries out the saponification reaction of 0.5 hour to obtain this solid content 25% disproportionated rosin potassium soap, and reaction temperature is 65 ℃;

[0025] The mass ratio of described solid disproportionated rosin to potassium hydroxide solution is: 3:1; 2 Protect.

Embodiment 3

[0027] Gum rosin is vacuum distilled to obtain refined gum rosin; then add palladium / carbon catalyzer and carry out disproportionation reaction for 3.5 hours, the reaction temperature is 270 ℃, filter and remove palladium / carbon catalyzer after reaction finishes, obtain solid disproportionated rosin; obtain solid disproportionated rosin and 50% potassium hydroxide solution is put into the reactor and carries out the saponification reaction of 1 hour to obtain this solid content 25% disproportionated rosin potassium soap, and the reaction temperature is 68 ℃;

[0028] The mass ratio of described solid disproportionated rosin to potassium hydroxide solution is: 3.0:1; 2 Protect.

[0029] Solid content 25% disproportionated rosin potassium soap technical index of the present invention is as table 1.

[0030] Table 1

[0031]

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Abstract

The invention discloses a preparation method of disproportionated rosin potassium soap with the solid content of 25 percent, and relates to the technical field of deep processing of rosin. The preparation method comprises the following steps: performing vacuum distillation on gum rosin to obtain refined gum rosin; adding a palladium / carbon catalyst to perform a disproportionation reaction for 2.5-3.5 hours at the reaction temperature of 270-280 DEG C; filtering to remove the palladium / carbon catalyst after the reaction is finished to obtain solid disproportionated rosin; putting the obtained solid disproportionated rosin and a 45-50% potassium hydroxide solution in a reactor to perform a saponification reaction so as to obtain the disproportionated rosin potassium soap with the solid content of 25 percent, wherein the reaction time is 0.5-1 hour and the reaction temperature is 62-68 percent. Compared with the prior art, the preparation method has the advantages of low production cost and 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 preparation method of disproportionated rosin potassium soap with a solid content of 25%. 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, the raw material of most manufacturers to prepare disproportionated rosin potassium soap is generally to directly adopt disproportionated rosin, and the price of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D15/00
Inventor 李炼陈伟强刘雯苏毛芬李珊华
Owner WUZHOU PINE CHEM
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