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Production method of light-colored rosin modified alkyd resin

A technology of rosin modification and alkyd resin, which is applied in the field of deep processing of rosin to achieve the effect of improving crystallinity resistance

Inactive Publication Date: 2016-10-12
石媛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, it is not difficult to see from the chemical structure of rosin that the presence of conjugated double bonds in the abietic acid type resin acid inevitably becomes the main factor affecting the color of rosin-modified alkyd resin.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The production method of this implementation light color example rosin modified alkyd resin is:

[0019] A. After heating and melting the rosin at 90°C, transfer it to a high-pressure reactor, and feed nitrogen into the reactor;

[0020] B. Add methanol, butanol, citric acid, castor bean oil, mix well, add magnesium oxide and toluene, stir well; wherein, the mass ratio of alcohols, citric acid, castor bean oil, magnesium oxide, toluene is 1:1.5:0.5:0.005:0.2;

[0021] C, stop feeding inert gas, the reaction process is constantly stirred and feeds propylene;

[0022] D. Adjust the temperature in the autoclave to 132°C to 135°C, react for 10 minutes, then adjust the temperature to 142°C to 144°C, and react for 40 minutes.

Embodiment 2

[0024] The production method of this implementation light color example rosin modified alkyd resin is:

[0025] A. After heating and melting the rosin at 110°C, transfer it to a high-pressure reactor, and feed nitrogen into the reactor;

[0026] B. Add methanol, glycerin, succinic acid, soybean oil, mix evenly, add magnesium oxide and toluene, and stir evenly; wherein, the mass ratio of alcohols, succinic acid, soybean oil, magnesium oxide, and toluene is 2: 2:1:0.003:0.5;

[0027] C, stop feeding inert gas, the reaction process is constantly stirred and feeds propylene;

[0028] D. Adjust the temperature in the autoclave to 137°C to 140°C, react for 15 minutes, then adjust the temperature to 148°C to 150°C, and react for 50 minutes.

Embodiment 3

[0030] The production method of this implementation light color example rosin modified alkyd resin is:

[0031] A. After heating and melting the rosin at 120°C, transfer it to a high-pressure reactor, and feed nitrogen into the reactor;

[0032] B, add butanol, glycerin, citric acid, soybean oil, mix well, add magnesium oxide and toluene solution, stir well; Wherein, the ratio of the mass of alcohols, citric acid, soybean oil, magnesium oxide, toluene is 1.5:1:1.5:0.002:0.7;

[0033] C, stop feeding inert gas, the reaction process is constantly stirred and feeds butene;

[0034] D. Adjust the temperature in the autoclave to 130°C to 135°C, react for 20 minutes, then adjust the temperature to 140°C to 145°C, and react for 45 minutes.

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PUM

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Abstract

The invention discloses a production method of a light-colored rosin-modified alkyd resin. In the method, propylene or butene is fed into the alkyd resin during the synthesis process to interact with the conjugated double bond of the abietic acid type resin acid in the rosin, so that the obtained Rosin-modified alkyd resins are lighter in color.

Description

technical field [0001] The invention relates to the technical field of rosin deep processing, in particular to a production method of light-colored rosin-modified alkyd resin. Background technique [0002] Rosin-modified alkyd resin refers to the modified resin made by adding modifier rosin in the preparation process of alkyd resin through chemical reaction. Due to the modification of rosin, the resin is easily soluble in ester solvents, which can increase the adhesion of the paint film, reduce the wrinkling of the paint film, improve the durability, alkali resistance and gloss of the paint film, and reduce the viscosity; the paint film releases solvent It is also faster, the drying rate is improved, and the drying is accelerated. [0003] However, it is not difficult to see from the chemical structure of rosin that the presence of conjugated double bonds in the abietic acid type resin acid inevitably becomes the main factor affecting the color of rosin-modified alkyd resin...

Claims

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Application Information

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IPC IPC(8): C08G63/49C08G63/78C08G63/83
CPCC08G63/48C08G63/78C08G63/83
Inventor 石媛
Owner 石媛