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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

Inactive Publication Date: 2016-11-09
GUANGXI ZHONGCHANG RESIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to provide a kind of preparation method of disproportionated rosin, this method can solve the problem that existing preparation method time is long, cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a method for preparing disproportionated rosin. The method includes adding refined rosin into a cavitation machine, then sequentially adding reaction solvents and catalysts into the cavitation machine and starting the cavitation machine; gradually increasing the reaction temperatures; filtering reaction products after disproportionation reaction is completely carried out and removing the catalysts to obtain the disproportionated rosin. The method has the advantages that processes for preparing the catalysts are simple and are low in production cost, the temperatures are increased in a gradient manner, the cavitation machine is used as a reaction kettle, and accordingly the reaction can be promoted to a great extent; the method is high in raw material conversion rate and product purity and little in side reaction.

Description

technical field [0001] The invention relates to the technical field of rosin deep processing, in particular to a preparation method of disproportionated rosin. Background technique [0002] The main component of rosin is a compound composed of resin acid, which has strong chemical activity, and usually requires hydrogenation, disproportionation reaction and other treatments to generate stabilized rosin. Due to its low production cost, disproportionated rosin is mainly used in synthetic rubber, ABS resin, water-soluble pressure-sensitive adhesives, printing inks, organic pigments, etc. [0003] The preparation method of traditional disproportionated rosin is mainly launched around two aspects of research: one is the selection of catalyst, the catalyst used in the prior art is mainly palladium carbon catalyst, and the catalyst cost is higher; [0004] On the other hand, it is the research of the preparation process; the most important technique in the prior art is to add a ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09F1/04
CPCC09F1/04
Inventor 黄桂彬蒋茵荣
Owner GUANGXI ZHONGCHANG RESIN
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