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A kind of preparation method of light color polymerized rosin

A technology of polymerizing rosin and light color, applied in the direction of chemical modification of natural resin, etc., can solve problems such as failure to meet application requirements, and achieve the effects of easy control of process parameters, good compatibility and good oxidation resistance.

Active Publication Date: 2020-04-10
广西鼎弘树脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the traditional preparation of light-colored polymerized rosin cannot meet the application requirements, and light-colored polymerized rosin is needed to meet market demand.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1 (mass ratio of polymerized rosin, turpentine, vegetable oil and catalyst 1:1:0.05:0.01)

[0018] Add 200 grams of polymerized rosin, 200 grams of turpentine, 10 grams of vegetable oil (peanut oil), 2 grams of palladium carbon in a 2-liter reaction bottle, stir at room temperature, then replace nitrogen 3 times, pass hydrogen at 5 MPa, and slowly heat up to 80 degrees React for 1 hour. The reaction completely removes the solvent to obtain a light-colored polymerized rosin.

Embodiment 2

[0019] Embodiment 2 (mass ratio 1:2:0.1:0.03 of polymerized rosin, turpentine, vegetable oil and catalyst)

[0020] Add 200 grams of polymerized rosin, 400 grams of turpentine, 20 grams of vegetable oil (soybean oil), 6 grams of palladium aluminum oxide in a 2-liter reaction bottle, stir at room temperature, then replace nitrogen 3 times, and feed hydrogen at 10 MPa, slowly Raise the temperature to 150°C and react for 3 hours. The reaction completely removes the solvent to obtain a light-colored polymerized rosin.

Embodiment 3

[0021] Embodiment 3 (mass ratio 1:3:0.15:0.05 of polymerized rosin, turpentine, vegetable oil and catalyst)

[0022] Add 200 grams of polymerized rosin, 600 grams of turpentine, 30 grams of vegetable oil (linseed oil), 10 grams of alloy nickel in a 2-liter reaction bottle, stir at room temperature, then replace nitrogen for 3 times, pass hydrogen at 15 MPa, and slowly heat up to 200 React for 5 hours. The reaction completely removes the solvent to obtain a light-colored polymerized rosin.

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Abstract

The invention discloses a preparation method of light colored polymerized rosin. The preparation method includes the following steps: adding polymerized rosin and turpentine to a reaction kettle, adding a catalyst and vegetable oil, feeding hydrogen under the pressure of 5-35 MPa, and increasing the temperature to 80-300 DEG C to perform a hydrogenation reaction for 1-6 h; performing pressure reduced solvent removal to obtain the light colored polymerized rosin. The catalyst is a Pd / C catalyst, a Pd / Al2O3 catalyst or nickel, the mass ratio of the polymerized rosin, the turpentine, the vegetable oil to the catalyst is 1:1-5:0.05-0.3:0.01-0.1. The light colored polymerized rosin is light-colored, has good stability, and can be applied to high-grade adhesives, coatings, printing ink, etc.

Description

technical field [0001] The invention belongs to the technical field of organic chemistry. In particular, it relates to a preparation method of light-colored polymerized rosin. Background technique [0002] Polymerized rosin is one of the modified varieties of rosin and is an important chemical raw material. Polymerized rosin has the advantages of high softening point, light color, not easy to crystallize, excellent oxidation resistance, good miscibility with film-forming agents, and higher viscosity in organic solvents, so it is widely used in coatings, paints, ink, paper and other industries. [0003] Research on light-coloring technology of polymerized rosin ([D] Li Yanlin, 2004-Guangxi University: Applied Chemistry) used rosin as raw material, and improved the process conditions of rosin polymerization, especially the research and development of light-coloring technology. In this paper, the effects of catalyst, solvent, reaction temperature and time, additives, sedimen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09F1/04
CPCC09F1/04
Inventor 李军申利群雷福厚李玉明黄志恒白春星张鹏程
Owner 广西鼎弘树脂有限公司