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Rosin modified resin and production method thereof

A technology of rosin modified resin and production method, which is applied in the direction of chemical modification of natural resin, etc., can solve the problems affecting the application field of products, large odor, etc., and achieve the effect of low odor and wide application range

Inactive Publication Date: 2013-02-27
ZHEJIANG XINSONG RESIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The rosin modified resin currently on the market is generally brownish yellow in color and has a strong smell, which affects the application field of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] The present invention will be further described below in conjunction with specific examples. It includes the following production steps:

[0008] 1. Dissolve 95-100 kg of first-grade rosin and put it into the reaction kettle. The temperature reaches 190°C-200°C, purging with steam for 30 minutes, and vacuum dehydration for 0.5 hours;

[0009] 2. When the temperature rises to 220°C-230°C, add 0-0.3 kg of di-tert-butyl-p-cresol, turn on the cooling water of the condenser, add 10-15% glycerin dropwise, and carry out the esterification reaction at a constant temperature for 6 hours after the temperature rises to 265°C Then take a sample to test the acid value;

[0010] 3. After passing the acid value test, use a steam nozzle to purge the resin in the kettle for 1 hour;

[0011] 4. After purging, use Roots vacuum dehydration for 3 hours;

[0012] 5. Nitrogen protection, cooling, granulation and packaging.

[0013] Due to the use of secondary steam purging and Roots vacuu...

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PUM

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Abstract

The invention relates to a rosin modified resin and a production method thereof. The production method of the resin comprises the following steps: A, dissolving 95-100 kilograms of grade-one rosin, then transferring into a reaction kettle, adding 0.5-0.8 kilogram of 6-tert-butyl-3-methylphenol, performing steam blowing for 30 minutes when the temperature reaches 190-200 DEG C, and performing vacuum dehydration for 0.5 hour; B, when the temperature rises to 220-230 DEG C, adding 0-0.3 kilogram of di-tert-butyl-para-cresol and phosphite composite stabilizer, turning on condenser cooling water, dropwisely adding 10-15 kilograms of glycerol, performing constant-temperature esterification reaction for 6 hours when the temperature rises to 265 DEG C, then sampling, and assaying the acid value; C, after the assayed acid value is qualified, blowing the resin in the kettle for 1 hours with a steam jet; D, after the blowing operation is finished, further performing vacuum dehydration for 3 hours with a Roots pump; and E, performing nitrogen gas protection, cooling, granulating, and packaging. The rosin modified resin provided by the invention is light and transparent in color, low in smell and wide in application range.

Description

technical field [0001] The invention relates to a rosin modified resin and a production method thereof. Background technique [0002] The rosin-modified resins currently on the market are generally brownish-yellow in color and relatively strong in smell, which affects the application fields of the products. Contents of the invention [0003] The purpose of the present invention is to provide a kind of rosin modified resin with light color and little smell and its production method. [0004] The technical scheme adopted by the present invention is: a rosin modified resin, which is characterized in that its weight components are: 95-100 kg of primary rosin, 10-15 kg of glycerin, di-tert-butyl p-cresol and phosphite compound 0-0.3 kg of stabilizer and 0.5-0.8 kg of 6-tert-butyl-3-methylphenol. [0005] The production method of described a kind of rosin modified resin is characterized in that it comprises the following steps: A, enter reactor after dissolving primary rosin, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09F1/04
Inventor 程永洋鄢正文
Owner ZHEJIANG XINSONG RESIN
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