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Production process for rosin resin

A technology for rosin and rosin ester, which is applied in the field of rosin preparation of rosin derivatives, can solve the problems that the product quality of rosin ester or modified rosin ester fails to meet the requirements, cannot really realize industrialization, and the preparation process is complicated, and can avoid refining Complete, improve yield and product quality, reduce the effect of dead volume

Active Publication Date: 2012-02-01
景东力奥林产集团林业化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the above process, the purity of raw rosin is relatively low, or the preparation process is complicated, so that the product quality of rosin ester or modified rosin ester cannot meet the requirements, and industrialization cannot be truly realized.

Method used

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  • Production process for rosin resin
  • Production process for rosin resin
  • Production process for rosin resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Embodiment 1: combine below figure 1 A method for preparing fumaric acid-modified rosin glycerides from rosin is described.

[0071] 1. Rosin refining process

[0072] Press the rosin from the rosin dissolving kettle 10 into the rosin measuring tank 1 with nitrogen, transfer it to the distillation kettle 2 after measuring, turn on the hot oil to heat up the material in the distillation kettle, and turn on the vacuum unit, and distill out the part at 180-220 ℃ separately. After collecting in the front distillate storage tank 3, switch the pipeline to the main distillate storage tank 4 to start the main distillate collection, until the material temperature reaches 270 ° C, and when there is no rosin distillation from the sight glass, turn off the hot oil, turn off In the vacuum unit, nitrogen is replaced into the distillation still 2 and the receiving still, and the obtained refined rosin is transferred to the esterification still for further processing.

[0073] After ...

Embodiment 2

[0079] Embodiment 2: combine below figure 1 A method for preparing maleic acid-modified rosin glycerides from rosin is described.

[0080] Refined rosin was obtained using the rosin refining process (step 1) in Example 1.

[0081] Transfer the metered refined rosin into the esterification kettle, add maleic acid for modification at 200°C, add antioxidants and glycerin to carry out esterification at 270°C after modification, and after 6 hours, pass steam and vacuumize. , cool down to 240 ℃, add the auxiliary materials in the later stage, stir evenly, and then transfer to the finished product storage tank.

[0082] The rosin resin in the finished product storage tank is continuously pumped into the granulator with a screw pump, and after being granulated and cooled by the granulator, it becomes a hemispherical granule, which is lifted into the product storage tank by the rosin resin elevator, and then packed into the bag by the packaging tool. Later became product stacking for...

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Abstract

The invention provides a method of preparing rosin ester or modified rosin ester from rosin. The method comprises a preparation step and an esterification step for modified rosin. The invention is characterized by further comprising a refining process for rosin carried out before the esterification step for modified rosin, and the refining process comprises a step of distillation. According to the step of distillation, rosin is placed into a distilling still and heated under vacuum, distilled fractions boiling in a range of 180 to 220 DEG C are collected separately, then main fractions are collected, and refined rosin is obtained after the temperature of rosin reaches 270 DEG C.

Description

technical field [0001] The present invention relates to a method for preparing rosin derivatives from rosin, in particular to a method for preparing rosin ester from rosin. Background technique [0002] The main component of rosin is resin acid, and resin acid has two active groups: two double bonds (or more active conjugated double bonds) and one carboxyl group. The products obtained by chemically reacting double bonds (or conjugated double bonds) with unsaturated compounds (such as maleic acid, acrylic acid, etc.) through Diels-Alder are usually called modified rosin, and the carboxyl group is used as the reactive group. The resulting products are often referred to as rosin derivatives, and all modified rosins can also utilize the carboxyl groups left behind to produce various derivatives. Modified rosin mainly includes hydrogenated rosin, disproportionated rosin, polymerized rosin and male rosin, and rosin derivatives mainly include rosin ester, rosin salt, rosin nitrile...

Claims

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Application Information

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IPC IPC(8): C09F1/04C09F1/02
Inventor 陈止戈宋自旗
Owner 景东力奥林产集团林业化工有限公司
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