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Water-white thermostable rosin resin and preparation method thereof

A technology of rosin resin and thermal stability, applied in the field of rosin deep processing, can solve the problems of high cost, energy saving and poor quality, and achieve the effects of saving energy consumption, small color change, and improving thermal stability and weather resistance.

Pending Publication Date: 2021-02-05
GUANGXI FORESTRY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a water-white heat-stable rosin resin and a preparation method thereof to solve the problems of cost reduction, energy saving and consumption reduction, and poor quality in the preparation of water-white rosin resin in the prior art

Method used

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  • Water-white thermostable rosin resin and preparation method thereof

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Embodiment 1

[0031] A preparation method of water-white heat-stable rosin resin, comprising the following steps:

[0032] (1) Take by weighing rosin 10000kg in dissolving tank, add 600kg turpentine middle oil, heat up, stir, fully dissolve, filter the rosin that dissolves, remove mechanical impurity;

[0033] (2) The turpentine liquid is put into a still kettle and carried out steam distillation, and the distillation temperature is 140° C., and the high-grade turpentine is separated;

[0034] (3) raise temperature to 170 ℃, carry out decompression steam distillation, vacuum tightness is 20mmHg, separates turpentine medium oil and heavy oil;

[0035] (4) in rising temperature to 270 ℃, vacuum degree is 5mmHg, and vacuum distillation produces refined rosin;

[0036] (5) The obtained refined rosin is directly thrown into the esterification reaction kettle, 11 kg of catalytic ZnO, 1 kg of antioxidant TBHQ, and 930 kg of pentaerythritol are added, and at 270° C., the stirring speed is 50 r / min...

Embodiment 2

[0039] A preparation method of water-white heat-stable rosin resin, comprising the following steps:

[0040] (1) Take turpentine 13000kg in dissolving tank, add 1200kg turpentine middle oil, heat up, stir, fully dissolve, filter the rosin that dissolves, remove mechanical impurity;

[0041] (2) The turpentine liquid is put into a still kettle and carried out steam distillation, and the distillation temperature is 150° C., and the high-grade turpentine is separated;

[0042] (3) raise temperature to 180 ℃, carry out decompression steam distillation, vacuum tightness is 15mmHg, separates turpentine medium oil and heavy oil;

[0043] (4) in rising temperature to 250 ℃, vacuum degree is 10mmHg, and vacuum distillation produces refined rosin;

[0044] (5) The refined rosin obtained is directly thrown into the esterification reaction kettle, 15 kg of catalyst, 2 kg of antioxidant BHA, and 1200 kg of pentaerythritol are added, and at 270° C., the stirring speed is 80 r / min, and the ...

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Abstract

The invention discloses a preparation method of water-white heat-stable rosin resin, which comprises the following steps: carrying out pretreatment on rosin used as a raw material, producing refined rosin by steam distillation, vacuum steam distillation and vacuum rectification, and carrying out esterification reaction on the refined rosin used as a raw material by adding polyol, a catalyst and anantioxidant, and after the reaction is finished, carrying out reduced pressure distillation to obtain the water-white heat-stable rosin resin. The efficient catalyst and the antioxidant are combinedfor esterification reaction, the thermal stability and weather resistance of the product are improved, and compared with similar domestic products, the product is lighter in color and luster and better in weather resistance.

Description

【Technical field】 [0001] The invention belongs to the field of rosin deep processing, and relates to a method for preparing water-white heat-stable rosin resin by using rosin as a raw material. 【Background technique】 [0002] The rosin industry is one of the four pillar industries of my country's forestry industry. my country's rosin trade volume accounts for about 60% of the world's total, and it is known as the "sunrise industry". [0003] Due to its structural characteristics, rosin has many excellent properties such as anti-corrosion, moisture-proof, insulation, adhesion and emulsification, and is widely used in ink, paint, adhesive, coating and soldering industries. However, due to the instability of rosin itself, such as easy crystallization, easy to be oxidized and discolored, and low softening point, its performance and application fields are limited to a certain extent. Esterification modification of rosin is one of the important ways. Water-white heat-stable rosi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09F1/04
CPCC09F1/04
Inventor 黎贵卿关继华陆顺忠邱米汤星月杨素华吴建文苏骊华党中广郭飞欧军
Owner GUANGXI FORESTRY RES INST