Preparation method of rosin ester

A technology for rosin ester and rosin, which is applied in the field of preparation of light-colored rosin ester, can solve the problems of easy yellowing due to improper storage, poor weather resistance of resin, dark resin color, etc., and achieves low cost, good temperature resistance and good weather resistance. Effect

Active Publication Date: 2014-03-12
湖南科茂林化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of the above-mentioned common methods is high, and the color of the prepared resin is 200-500 Hasson value (Ghana color 0.5-1), the weather resistance of the resin is poor, and it is easy to turn yellow when improperly stored, that is, the stability is poor; and the raw material is completely ordinary rosin , the color of the rosin ester prepared by esterification is darker, the solid color of the resin is Ghana color grade 3-5, and the color of the resin is darker

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of embodiment of the preparation method of rosin ester of the present invention, described method comprises the following steps:

[0030] (1) Put Yunnan rosin into the reactor, and under the protection of inert gas, heat up to 170°C to melt Yunnan rosin;

[0031] (2) Add 0.5% methacrylic acid by weight of Yunnan rosin at 130°C and react for 0.5 hours;

[0032] (3) Add self-made composite light color agent L2011 with 0.01% weight of Yunnan rosin and pentaerythritol with 11% weight of Yunnan rosin at 180°C, react at 180°C for 8 hours, then add butyric acid, and react for another 2 hours, remove the reaction in vacuum The generated water is added with 0.1% weight of Yunnan rosin 2,6-di-tert-butyl-4-methylphenol to obtain rosin ester.

[0033] The self-made composite light color agent L2011 used in step (3) of this example is prepared by the following method: nonylphenyl dithiol oligomer, bis(2,4-di-p-isopropylphenyl) pentaerythritol bis Phosphate ester, zinc oxide...

Embodiment 2

[0036] A kind of embodiment of the preparation method of rosin ester of the present invention, described method comprises the following steps:

[0037] (1) Put the masson rosin into the reactor, and under the protection of inert gas, heat up to 180°C to melt the masson rosin;

[0038] (2) Add itaconic acid with 8% weight of masson rosin at 200°C and react for 2 hours;

[0039] (3) Add self-made composite light color agent L2011 with 1% weight of masson rosin and phenylethyl alcohol with 18% weight of masson rosin at 230°C, react at 285°C for 2 hours, then add benzoic acid, and react for another 2 hours, remove in vacuum The water generated by the reaction is cooled to 240°C, and 0.6% of masson rosin weight tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate]pentaerythritol ester is added to obtain the rosin ester.

[0040] The self-made composite light color agent L2011 used in step (3) of this example is prepared by the following method: nonylphenyl dithiol oligomer, b...

Embodiment 3

[0043] A kind of embodiment of the preparation method of rosin ester of the present invention, described method comprises the following steps:

[0044] (1) Put the refined Yunnan rosin into the reactor, and under the protection of inert gas, heat up to 175°C to melt the refined Yunnan rosin;

[0045] (2) Add 1% fumaric acid by weight of refined Yunnan rosin at 150°C and react for 1 hour;

[0046] (3) Add self-made compound light color agent L2011 with 0.3% weight of refined Yunnan rosin and glycerin with 12% weight of refined Yunnan rosin at 210°C, heat up to 250°C for 1 hour, then heat up to 270°C for 3 hours, then add 2% phthalic acid by weight of rosin, and react for another 2 hours, remove the water generated by the reaction in vacuum, cool down to 190°C, add tetrakis[β-(3,5-di-tert-butyl- 4-Hydroxyphenyl) propionic acid] pentaerythritol ester, that is, rosin ester.

[0047] The self-made composite light color agent L2011 used in step (3) of this example is prepared by t...

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Abstract

The invention discloses a preparation method of a rosin ester, and comprises the following steps: (1) feeding the rosin ester in a reactor, warming to 170-180 DEG C under the protection of inert gas to melt the rosin; (2) adding unsaturated acid which is 0.5-8% of the rosin weight at 130-200 DEG C, and reacting for 0.5-2 hours; (3) adding a homemade composite reduced-color reagent which is 0.01-1% of the rosin weight and alcohol which is 11-18% of the rosin weight at 180-230 DEG C, reacting for 2-8 hours at 180-285 DEG C, adding saturated acid, and then reacting for 2 hours, removing water produced in reaction in a vacuum mode, cooling to 180-240 DEG C, adding a stabilizer which is 0.1-0.6% of the rosin weight to obtain the rosin ester. The preparation method disclosed by the invention is simple in process and low in cost, and the rosin ester with light color, good weather resistance, good yellowing resistance and good temperature tolerance can be prepared.

Description

technical field [0001] The invention relates to a preparation method of rosin ester used in technical fields such as adhesives, coatings, decolorizers, etc., especially a preparation method of light-colored rosin ester. Background technique [0002] At present, rosin esters account for more than 60% of rosin deep-processing products, and are widely used in coatings, adhesives, inks and other related industries. With the development of downstream industries, the demand for light-colored rosin esters is gradually increasing, especially for high-quality colorless and light-colored rosin esters. [0003] At present, the preparation methods of light-colored rosin are mostly: high-temperature disproportionation of rosin under the action of phenolic sulfides and noble metals, refining and refining, and then esterification; hydrogenated rosin, refining and purification, and esterification to obtain light-colored rosin ester. The cost of the above-mentioned common methods is high, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09F1/04
Inventor 雷冠军徐社阳范德明曾广建
Owner 湖南科茂林化有限公司
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