Preparation method of rosin acid

A technology of rosin resin acid and rosin resin, which is applied in the field of preparation of rosin resin acid, and can solve the problems that the effect cannot be well exerted, the content of pimaric acid is low, and the like

Active Publication Date: 2014-12-17
GUANGXI ZHONGCHANG RESIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a preparation method of rosin resin acid, which can solve the problem that the content of pimaric acid is too low in the rosin resin acid prepared by the prior art, so that the effect cannot be brought into full play. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The preparation method of this rosin resin acid comprises the following steps:

[0017] A. Put 30kg of turpentine into the melting kettle, add 3kg of xylene, 1kg of turpentine, 0.1kg of oxalic acid and 8kg of water under stirring conditions, and stir at 60°C to completely melt the raw material natural ground turpentine;

[0018] B. After step A, remove the filter residue by filtration to obtain the first fat liquid and put it into the clarification pot, clarify and separate to obtain the second fat liquid;

[0019] C. After step B, put the second fat liquid into a still, distill at 150° C. for 3 hours, recover the solvent, and rectify the obtained residual liquid to obtain the first intermediate product;

[0020] D. After step C, put the first intermediate product into an esterification kettle, add 5kg of maleic acid, 10kg of glycerin and 1kg of pimaric acid, and conduct an esterification reaction at 240° C. for 6 hours to obtain the second intermediate product;

...

Embodiment 2

[0024] The preparation method of this rosin resin acid comprises the following steps:

[0025] A. Put 45kg of turpentine into the melting pot, add 5kg of xylene and 3kg of turpentine, 0.3kg of oxalic acid and 12kg of water under stirring conditions, and stir at 80°C to completely melt the raw material natural rosin;

[0026] B. After step A, remove the filter residue by filtration to obtain the first fat liquid and put it into the clarification pot, clarify and separate to obtain the second fat liquid;

[0027] C. After step B, put the second fat liquid into a still, distill at 180° C. for 1 hour, recover the solvent, and rectify the obtained residual liquid to obtain the first intermediate product;

[0028] D. After step C, put the first intermediate product into an esterification kettle, add 8kg maleic acid, 12kg glycerin and 2kg pimaric acid, and conduct an esterification reaction at 270° C. for 4 hours to obtain the second intermediate product;

[0029] E. After step...

Embodiment 3

[0032] The preparation method of this rosin resin acid comprises the following steps:

[0033] A. Put 40kg of turpentine into the melting pot, add 4kg of xylene and 2kg of turpentine, 0.2kg of oxalic acid and 10kg of water under stirring conditions, and stir at 70°C to completely melt the raw material natural pine resin;

[0034] B. After step A, remove the filter residue by filtration to obtain the first fat liquid and put it into the clarification pot, clarify and separate to obtain the second fat liquid;

[0035] C. After step B, put the second fat liquid into a still, distill at 160°C for 2 hours, recover the solvent, and rectify the obtained residual liquid to obtain the first intermediate product;

[0036] D. After step C, put the first intermediate product into an esterification kettle, add 6 kg of maleic acid, 11 kg of glycerin and 1.5 kg of pimaric acid, and conduct an esterification reaction at 2670° C. for 5 hours to obtain the second intermediate product;

[0...

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PUM

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Abstract

The invention discloses a preparation method of rosin acid, and belongs to the technical field of deep processing of rosin. The method comprises the following steps: putting turpentine in a melting kettle, adding xylene, turpentine oil, oxalic acid and water, carrying out stirring melting, filtering to remove filter residues, clarifying, separating, distilling in a distillation kettle, rectifying, putting the above obtained rectified material in an esterification kettle, adding maleic acid, glycerin and pimaric acid, carrying out an esterification reaction, cooling, crystallizing, filtering, and washing to prepare the rosin acid. The content of pimaric acid in the rosin acid prepared in the invention reaches above 95%.

Description

technical field [0001] The invention belongs to the field of resin deep processing, and in particular relates to a preparation method of rosin resin acid. Background technique [0002] Pine resin is a kind of natural resin, which is a physiological metabolite produced during the life activities of pine trees. It is a kind of oil-containing natural resin and is a colorless, transparent viscous liquid. Pine resin mainly gathers in the pine resin channel of pine trees, has the aroma and bitter taste of pine trees, and its main components are resin acids, fatty acids, and unsaponifiable substances. [0003] Rosin can be processed into rosin resin acid. The main components of rosin resin acid are abietic acid, pimaric acid, palusmaric acid and neoabietic acid. Among them, pimaric acid is widely used in medicine, pesticides, surfactants, chiral catalysts, etc. Has a wide range of uses. However, in the rosin resin acid prepared by the prior art, the content of pimaric acid is too...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C61/35C07C51/493
CPCC07C51/44C07C51/48C07C51/493C07C2603/26C07C61/35
Inventor 宣景建
Owner GUANGXI ZHONGCHANG RESIN
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