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Novel method for synthesizing stearic acid-modified short oil glyptal resin

A technology of alkyd resin and stearic acid, which is applied in coatings, polyurea/polyurethane coatings, etc., can solve the problems of poor water resistance and adding more curing agents, and achieve good wettability, reduce reaction space resistance, and elasticity Good results

Active Publication Date: 2012-06-06
JIANGSU CHAMPION TECHNOLOGY GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to solve the shortcomings of poor water resistance and many curing agents brought about by the high hydroxyl value of traditional resins, and to provide an alcohol with excellent comprehensive performance that makes the paint film plump, moderate hardness, and good flexibility. acid resin

Method used

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  • Novel method for synthesizing stearic acid-modified short oil glyptal resin
  • Novel method for synthesizing stearic acid-modified short oil glyptal resin
  • Novel method for synthesizing stearic acid-modified short oil glyptal resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 596.05kg of refined oleic acid, 357.63kg of 1081 stearic acid, 157.36kg of benzoic acid, 298.03kg of diethylene glycol, 59.06kg of TMP, 298.03kg of glycerin (95.0%), and 576.44kg of pentaerythritol were put into the reactor, and then 1788.15kg of phthalic anhydride was added. Afterwards, when the temperature is lower than 80°C, add 5.96kg antioxidant, reflux with 119.21kg xylene, heat up, and pass carbon dioxide (when the temperature rises to 170°C, stop ventilation), when the temperature rises to 120°C, start stirring At the same time turn on the return cooling water. Control the voltage so that it takes 2.0 hours to rise to 170°C and keep it warm for 1.0 hours. Continue to raise the temperature so that it takes 2.5 hours to rise to 200°C, then rise to 210°C, and reflux at a constant temperature. After the reaction until the acid value is ≤12mgKOH / g, lower the temperature. When the temperature dropped to 190° C., add 953.68 kg of xylene and 119.21 kg of toluene to di...

Embodiment 2

[0035]937.52kg refined oleic acid, 250.00kg1081 stearic acid, 143.75kg benzoic acid, 506.26kg diethylene glycol, 56.88kgTMP, 318.76kg glycerin (95.0%), 451.07kg pentaerythritol were put into the reactor, and then 1562.53kg phthalic anhydride was added, Afterwards, when the temperature is lower than 80°C, add 12.50kg antioxidant, reflux with 200.00kg xylene, heat up, and pass carbon dioxide (when the temperature rises to 170°C, stop ventilation), when the temperature rises to 120°C, start stirring Turn on the reflux cooling water. Control the voltage so that it takes 2.0 hours to rise to 170°C and keep it warm for 1.0 hours. Continue to raise the temperature so that it takes 2.5 hours to rise to 200°C, then rise to 210°C, and reflux at a constant temperature. After the reaction until the acid value is less than or equal to 12mgKOH / g, lower the temperature. When the temperature dropped to 190°C, add 1043.77kg of xylene and 62.50kg to dilute, and adjust the viscosity of the rea...

Embodiment 3

[0037] 1221.72kg refined oleic acid, 228.46kg1081 stearic acid, 299.32kg benzoic acid, 610.86kg diethylene glycol, 6.11kgTMP, 61.09kg glycerin (95.0%), 357.96kg pentaerythritol were put into the reactor, and then 1221.72kg phthalic anhydride was added, Afterwards, when the temperature is lower than 80°C, add 12.22kg antioxidant, reflux with 366.51kg xylene, heat up, and pass carbon dioxide (when the temperature rises to 170°C, stop ventilation), when the temperature rises to 120°C, start stirring At the same time turn on the return cooling water. Control the voltage so that it takes 2.0 hours to rise to 170°C and keep it warm for 1.0 hours. Continue to raise the temperature so that it takes 2.5 hours to rise to 200°C, then rise to 210°C, and reflux at a constant temperature. After the reaction until the acid value is less than or equal to 12mgKOH / g, lower the temperature. When the temperature dropped to 190° C., add 977.37 kg of xylene and 156.56 kg of toluene to dilute, and...

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Abstract

The invention discloses a novel method for synthesizing stearic acid-modified short oil glyptal resin, which is prepared by reactions of refined oleic acid, stearic acid, phthalic anhydride, benzoic acid, diethylene glycol, trimethylol propane, glycerol, pentaerythritol and antioxygen. The glyptal resin with high performance mainly contains stearic acid and primary hydroxyl, is improved in glass transition temperature, releases solvent quickly in a drying process, can be dried quickly when added with a small amount of curing agent, reduces reaction space steric hindrance, improves curing reaction activity, and accelerates drying film-forming speed in paint construction; the acid value of the resin is designed to be 10 to 12mgKOH / g, the moisturizing effect of the resin on powder is high, problems of tank expansion and the like are solved, and an optimal effect is achieved; the hydroxyl value of the glyptal resin is about 60mgKOH / g, the prepared wood lacquer has high water resistance and gloss retention; and thus, the glyptal resin has high comprehensive performance.

Description

technical field [0001] The invention belongs to the technical field of interior wood lacquer, and in particular relates to an alkyd resin with superior performance. Background technique [0002] Wood coating is the main material for indoor wood and furniture decoration and decoration. At present, most of the two-component wood paints used in the market are short-oil alcohol resins, such as: Changxing Paint 3106-X-70, Jiangsu Sanmu Paint 3370D, 1270B, Jiangmen Paint 1170D, 1170K, etc., need to add a lot of curing It can be dried quickly only if ordinary polyurethane curing agent is used, the free TDI in the synthetic wood lacquer will easily exceed the standard, which will cause great harm to the human body. If German Bayer L-75 curing agent is used, although it is easy to meet the national standard, the cost is high. [0003] The glass transition temperature of the alkyd resin has a great influence on the drying performance of the resin. This is because the glass transition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/676C08G63/49C08L67/08C09D175/14
Inventor 谢海
Owner JIANGSU CHAMPION TECHNOLOGY GROUP CO LTD
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