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Aquosity short oil alkyd resin and preparation method thereof

An alkyd resin, short oil degree technology, applied in coatings, polyester coatings, etc., can solve the problems of hydrolysis resistance stability, flexible impact strength, and high cost of the paint film, avoiding poisoning failure, water resistance, etc. The effect of improved solution stability and stable synthesis reaction

Inactive Publication Date: 2012-06-27
江苏三木化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the hydrolytic stability, flexibility and impact strength of the paint film are average, and the cost is relatively expensive

Method used

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  • Aquosity short oil alkyd resin and preparation method thereof
  • Aquosity short oil alkyd resin and preparation method thereof
  • Aquosity short oil alkyd resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: 17.88% coconut oil fatty acid, 16.79% trimethylolpropane, 13.99% terephthalic acid, add 0.1% liquid butyl tin catalyst, drop in the stainless steel reactor, seal the feeding port, open the air Valve, heat up and stir. When the temperature rises to 170°C, water begins to flow out, then continue to heat up to 220-230°C and keep it warm for 2-4 hours until the acid value is below 10mgKOH / g, then cool down to 175°C, add 3.64% partial anhydride, and keep warm at 170-180°C Carry out esterification reaction until the acid value is 45-55mgKOH / g, and the Grignard viscosity is 12-20s, then cool down, add 15.90% ethylene glycol butyl ether, 3.78% dimethylethanolamine and 27.92% deionized water and stir evenly . The whole process takes about 10-15 hours.

Embodiment 2

[0013] Embodiment 2: 15.58% coconut oil fatty acid, 17.44% trimethylolpropane, 15.74% terephthalic acid, add 0.1% liquid butyl tin catalyst, drop in the stainless steel reaction kettle, seal the feed inlet, open the air Valve, heat up and stir. When the temperature rises to 170°C, water begins to flow out, then continue to heat up to 220-230°C and keep the temperature for 2-4 hours until the acid value is below 10mgKOH / g, then cool down to 175°C, add 2.95% partial anhydride and 0.68% maleic anhydride, Keep warm at 170-180°C for esterification until the acid value is 45-55mgKOH / g, Grignard viscosity 12-25s, then cool down, add 10.25% propylene glycol methyl ether, 3.36% dimethylethanolamine and 33.9% Ionized water was stirred evenly. The whole process takes about 10-15 hours.

Embodiment 3

[0014] Embodiment 3: 17.04% of coconut oil fatty acid, 14.53% of pentaerythritol, 17.22% of terephthalic acid, plus 0.1% of liquid butyl tin catalyst, put into a stainless steel reactor, seal the feeding port, open the vent valve, heat up and stir . When the temperature rises to 170°C, water begins to flow out, then continue to heat up to 220-230°C and keep it warm for 2-4 hours until the acid value is below 10mgKOH / g, then cool down to 175°C, add 3.82% partial anhydride, and keep warm at 170-180°C Carry out esterification reaction until the acid value is 45-55mgKOH / g, Grignard viscosity is 15-30s, then cool down, add 7.90% propylene glycol methyl ether, 7.90% isopropanol, 3.60% dimethylethanolamine and 27.89% Deionized water and stir well. The whole process takes about 10-15 hours.

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Abstract

The invention discloses an aquosity short oil alkyd resin and a preparation method thereof. The method comprises the following steps: 15.5-19.5% of fatty acid, 14-18% of polyalcohol and 13-18% of terephthalic acid are added with 0.05-0.2% of liquid butyltin catalyst for esterification reaction at the temperature of 220 DEG C-230 DEG C; 3-5% of estolide is added when the acid value is below 10mgKOH / g and the esterification reaction is continued at the temperature of 170-180 DEG C till the acid value is 45-55mgKOH / g; if the viscosity is qualified, the temperature is lowered, and latent solvent,neutralizing agent and deionized water are added, then the mixture is stirred evenly, thereby obtaining a finished product. The liquid butyltin catalyst is adopted in the resin synthetic process, thereby avoiding poisoning failure of powdered butyltin catalyst and ensuring more steady and full reaction. In the method, other more expensive polybasic acids are replaced by cheaper terephthalic acid,thereby improving paint film property and lowering cost greatly.

Description

technical field [0001] The invention relates to a water-based short-oil alkyd resin which is matched with an amino resin and used in the field of decorative and protective coatings, and a preparation method of the resin. Background technique [0002] Most of the traditional paints are solvent-based, which contain a large amount of organic solvents, which volatilize into the atmosphere during construction, causing serious harm to the human body and the environment. With the increasingly stringent environmental protection requirements around the world, it is the general trend to develop water-based coatings to replace solvent-based coatings. Solvent-based alkyd resin coatings have always occupied a considerable proportion in the field of traditional coatings due to their excellent comprehensive properties. Therefore, water-based alkyd resin coatings will bear the brunt of becoming an important direction of water-based coatings industry. [0003] Traditional alkyd amino bakin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/49C09D167/08C09D161/20
Inventor 赵子千杨树民
Owner 江苏三木化工股份有限公司
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