High-solid and low-viscosity short oil alkyd resin and preparation method therefor

An alkyd resin, high-solid and low-viscosity technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as high viscosity, difficulty in preparing low-VOC paint products, and large impact of wood paint, achieving low viscosity and significant Social benefit and economic benefit, low VOC effect

Inactive Publication Date: 2015-12-23
SKSHU PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reduction of VOC content is mainly achieved by resins, but the short-oil alkyd resins used to prepare polyurethane paints on the market have high viscosity, making it difficult to prepare low-VOC paint products
For these high-VOC paint products, the country has begun to increase consumption tax, and some regions have restricted sales, which has dealt a big blow to the wood paint market

Method used

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  • High-solid and low-viscosity short oil alkyd resin and preparation method therefor
  • High-solid and low-viscosity short oil alkyd resin and preparation method therefor
  • High-solid and low-viscosity short oil alkyd resin and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0018] A high-solid, low-viscosity, short-oil alkyd resin, which is prepared from the following components in the following parts by weight:

[0019]

[0020] The medium solvent is xylene; the diluted solvent is one of toluene and xylene or any combination of the two.

[0021] The dihydric alcohol is one or any combination of ethylene glycol, propylene glycol, diethylene glycol, methylpropanediol, and neopentyl glycol.

[0022] The trihydric alcohol is one of glycerin, trimethylolpropane or any combination of the two.

[0023] Described high-solid low-viscosity short-oil alkyd resin is prepared according to the following method:

[0024] (1) 65-75 parts of oleic acid, 26-47 parts of diols, 35-53 parts of trihydric alcohols, 70-80 parts of phthalic anhydride, 0.03-0.08 parts of hypophosphorous acid, and 10-20 parts of medium solvent into the reactor;

[0025] (2) Pass nitrogen or carbon dioxide protective gas into the reaction kettle, remove the oxygen in the reaction ket...

Embodiment 1

[0031] A high-solid, low-viscosity, short-oil alkyd resin, which is prepared from the following components in the following parts by weight:

[0032]

[0033] The preparation method of the above-mentioned high-solid low-viscosity short-oil alkyd resin is prepared according to the following method:

[0034] (1) 70 parts of oleic acid, 26 parts of neopentyl glycol, 53 parts of trimethylolpropane, 80 parts of phthalic anhydride, 0.06 part of hypophosphorous acid, and 15 parts of xylene are put into the reactor;

[0035] (2) Feed nitrogen or carbon dioxide protective gas into the reactor to remove oxygen in the reactor, then heat up to 150°C, after the material is dissolved, stir for 10 minutes at a speed of 300 rpm, then heat up to 165°C, Allow the material to insulate and reflux in the reactor, and perform esterification reaction for 3 hours;

[0036] (3) Slowly heat up to 190° C. for esterification, and take a sample of the resin during the heat preservation esterification ...

Embodiment 2

[0040] A high-solid, low-viscosity, short-oil alkyd resin, which is prepared from the following components in the following parts by weight:

[0041]

[0042] The preparation method of the above-mentioned high-solid low-viscosity short-oil alkyd resin is characterized in that: it is prepared according to the following method:

[0043] (1) Put 65 parts of oleic acid, 20 parts of diethylene glycol, 16 parts of ethylene glycol, 75 parts of phthalic anhydride, 35 parts of trimethylolpropane, 0.06 parts of hypophosphorous acid, and 10 parts of xylene into the reaction kettle ;

[0044] (2) Feed nitrogen or carbon dioxide protective gas into the reaction kettle to remove the oxygen in the reaction kettle, then heat up to 160°C, after the material is dissolved, stir at a speed of 600 rpm for 20 minutes, then heat up to 180°C, Allow material to insulate and reflux in the reactor, esterify for 4 hours;

[0045] (3) Slowly heat up to 210°C for esterification, and take a sample of t...

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Abstract

The invention relates to alkyd resin, particularly high-solid and low-viscosity short oil alkyd resin and a preparation method therefor. The high-solid and low-viscosity short oil alkyd resin provided by the invention is prepared from the following components in parts by weight: 65-75 parts of oleic acid, 26-47 parts of dihydric alcohol, 35-53 parts of trihydric alcohol, 70-80 parts of phthalic anhydride, 0.06-0.1 part of hypophosphorous acid, 10-20 parts of a medium solvent, and 30-50 parts of a diluting solvent. The short oil alkyd resin prepared by the invention is high in solid content and low in viscosity, can be used in light or matte polyurethane wood lacquer at the same time, remarkably reduces the content of VOC in paint, and has a good film effect.

Description

technical field [0001] The invention relates to a short-oil alkyd resin, in particular to a high-solid, low-viscosity short-oil alkyd resin and a preparation method thereof. Background technique [0002] Wood lacquers are mainly oil-based polyurethane lacquers, which account for a large market share and are popular with consumers. However, they pollute the environment to a certain extent, and VOC content is an important indicator. The reduction of VOC content is mainly achieved by resins, but the short oil alkyd resins currently on the market for preparing polyurethane paints have high viscosity, making it difficult to prepare low-VOC paint products. For these high-VOC paint products, the country has begun to increase the consumption tax, and some regions have restricted sales, which has dealt a big blow to the wood paint market. Therefore, researching and developing a kind of high-solid low-viscosity alkyd resin is the key point of solving this problem technology. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/49C08G63/78C09D175/14
Inventor 洪杰张胜军魏川
Owner SKSHU PAINT
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