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Method for producing refined light-color rosin by using turpentine as raw material

A rosin, light-colored technology, applied in the field of rosin production, can solve the problems of high temperature, large equipment investment, high energy consumption, etc., and achieve the effects of high softening point, less equipment investment, and low energy consumption.

Inactive Publication Date: 2015-03-04
GUANGXI UNIV FOR NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high boiling point of rosin resin acid, the vacuum distillation treatment method of rosin requires higher temperature (about 230 ° C) and complex vacuum pressure-resistant equipment, which has the disadvantages of large equipment investment and energy consumption.

Method used

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  • Method for producing refined light-color rosin by using turpentine as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take by weighing 50 grams of masson pine rosin, put it in a 100mL round-bottomed flask, add the benign solvent dichloromethane of pine resin after fully dissolving, the mass volume ratio of pine resin and dichloromethane is 10:8, filter to remove insoluble substances such as wood chips and bark, etc. Solid impurities; then, wash the fat liquid with oxalic acid aqueous solution to remove water-soluble impurities and resin acid iron salts, wherein the amount of oxalic acid is 0.05 to 0.1% of the mass of turpentine, divide the water phase, and add acetonitrile, rosin and acetonitrile to the organic phase under stirring The mass-to-volume ratio is 10:8, and white resin acid precipitates out and is in a dispersed state. Filter and separate resin acid precipitation, resin acid precipitation is combined, in N 2 or CO 2 Heating and melting treatment under protection, cooling and solidification to obtain rosin products. The selected benign solvent dichloromethane and the non-b...

Embodiment 2

[0021] Take by weighing 100 grams of masson pine rosin, put it in a 500mL round-bottomed flask, add the benign solvent dichloromethane of turpentine after fully dissolving, the mass volume ratio of pine resin and dichloromethane is 10:15, filter to remove wood chips, bark and other insoluble substances Solid impurities; then, wash the fat liquid with oxalic acid aqueous solution to remove water-soluble impurities and resin acid iron salts, wherein the amount of oxalic acid is 0.05 to 0.1% of the mass of turpentine, divide the water phase, and add acetonitrile, rosin and acetonitrile to the organic phase under stirring The mass-to-volume ratio is 10:25, and white resin acid precipitates out and is in a dispersed state. Filter and separate resin acid precipitation, resin acid precipitation is combined, in N 2 or CO 2 Heating and melting treatment under protection, cooling and solidification to obtain rosin products. The selected benign solvent dichloromethane and the non-benig...

Embodiment 3

[0023] Take by weighing 200 grams of masson pine rosin, put it in a 1000mL round-bottomed flask, add the benign solvent dichloromethane of turpentine after fully dissolving, the mass volume ratio of pine resin and dichloromethane is 10:15, filter to remove insoluble substances such as wood chips and bark, etc. Solid impurities; then, wash the fat liquid with oxalic acid aqueous solution to remove water-soluble impurities and resin acid iron salts, wherein the amount of oxalic acid is 0.05 to 0.1% of the mass of turpentine, divide the water phase, and add acetonitrile, rosin and acetonitrile to the organic phase under stirring The mass-to-volume ratio is 10:25, and white resin acid precipitates out and is in a dispersed state. Filter and separate resin acid precipitation, resin acid precipitation is combined, in N 2 or CO 2 Heating and melting treatment under protection, cooling and solidification to obtain rosin products. The selected benign solvent dichloromethane and the n...

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Abstract

The invention discloses a method for producing refined light-color rosin by using turpentine as a raw material, which comprises the following steps: dissolving turpentine, purifying turpentine liquid,depositing and separating the rosin (resin acid), fusing the resin acid deposit, distilling and recycling the solvent and the terebinth, and the like. The rosin has the characteristics of light color, high acid value and low content of unsaponifiable matters, and achieves or exceeds the performance indexes of the refined light-color rosin prepared by the vacuum distillation technique. The methodhas the advantages of low equipment investment, simple operation and low operation cost, has favorable social and economic benefits, and is suitable for medium and small rosin fabrication plants.

Description

technical field [0001] The invention relates to a method for producing rosin by using rosin as raw material, especially a method for producing refined light-colored rosin. Background technique [0002] Pine resin is a renewable plant resource, and it is the raw material for the production of two major forest chemical products, rosin and turpentine. From the perspective of chemical composition, turpentine is mainly a solution formed by dissolving solid resin acids in liquid terpenes. After processing rosin, the volatile terpenes are called turpentine, and the non-volatile resin-acid fusions are called rosin. Industrially, the production of rosin and turpentine from turpentine mainly adopts the steam distillation method, which includes three production processes: the dissolution of rosin, the purification of dissolved fat liquid and the distillation of net fat liquid. First heat the turpentine and add turpentine and water to make it melt into a liquid state, filter out most o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09F1/04
Inventor 黄道战蓝虹云雷福厚
Owner GUANGXI UNIV FOR NATITIES
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