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Process for producing alcohol acid resin using p-phathalic acid waste material

A technology of terephthalic acid and alkyd resin is applied in the technical field of producing alkyd resin by using terephthalic acid waste, which can solve the problem of high process cost, and achieve the advantages of avoiding environmental pollution, slight loss of light and improving heat resistance. Effect

Inactive Publication Date: 2010-09-15
王龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a process for producing alkyd resin using waste terephthalic acid in order to solve the problem of high process cost of producing alkyd resin from high-purity terephthalic acid in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Embodiment 1, a kind of technology that utilizes terephthalic acid waste to produce alkyd resin, used the raw material of following weight ratio, terephthalic acid waste 280 parts, polyol 160 parts, monobasic organic acid 260 parts, 200# solvent oil 550 copies,

[0008] The preparation method is to put terephthalic acid waste, polyol, monobasic acid, and xylene with 3% of the total amount of the first three substances in a reaction kettle, heat it up to 235°C under stirring, and divide water under reflux. , until the reactants are transparent and uniform, lower the temperature to 170°C, then add 200# solvent oil, dilute, take out of the pot, filter, and the final alkyd resin index, color, iron-cobalt colorimeter 5-13; viscosity, coating- 4 cups 150-300 seconds; acid value 8-12. One of the sources of terephthalic acid waste is Nanjing Dachang Lubricating Oil Distribution Co., Ltd.

[0009] The polyhydric alcohol can be glycerin, pentaerythritol, trimethylolpropane and ...

Embodiment 2

[0010] Embodiment 2, a kind of technology that utilizes terephthalic acid waste to produce alkyd resin, used the raw material of following weight ratio, terephthalic acid waste 350 parts, polyol 100 parts, monobasic acid 300 parts, 200# solvent oil 400 share,

[0011] The preparation method is to put terephthalic acid waste, polyol, monobasic acid, and xylene with 2% of the total amount of the first three substances in a reaction kettle, heat it up to 230°C under stirring, and divide water under reflux. , until the reactants are transparent and uniform, lower the temperature to 170°C, then add 200# solvent oil, dilute, take out of the pot, filter, and the final alkyd resin index, color, iron-cobalt colorimeter 5-13; viscosity, coating- 4 cups 150-300 seconds; acid value 8-12. The polyhydric alcohol can be glycerin, pentaerythritol, trimethylolpropane and the like. Monobasic organic acids are oleic fatty acid, benzoic acid, palmitic acid, soybean oil and the like. 200# solve...

Embodiment 3

[0012] Embodiment 3, a kind of technology that utilizes terephthalic acid waste to produce alkyd resin, used the raw material of following weight ratio, terephthalic acid waste 300 parts, polyol 130 parts, monobasic organic acid 280 parts, 200# solvent oil 500 copies,

[0013] The preparation method is to place terephthalic acid waste, polyols, monobasic organic acids, and xylene with a total amount of 2.5% of the first three substances in a reaction kettle, heat up to 233°C under stirring, and separate water under reflux React until the reactants are transparent and uniform, lower the temperature to 170°C, then add 200# solvent oil, dilute, take out of the pot, filter, and the final alkyd resin index, color, iron-cobalt colorimeter 5-13; viscosity, coating -4 cups 150-300 seconds; acid value 8-12. The process of the water separation reaction is to take out the water produced in the neutralization reaction of the raw materials through the process of xylene evaporation and con...

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PUM

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Abstract

The present invention relates to a production process of alkyd resin, specifically, is a process of producing alkyd resin by using terephthalic acid waste. The invention solves the problem of high process cost of using high purity terephthalic acid to produce alkyd resin, which exists in existing technologies. The preparation method orders, in sequence, to add terephthalic acid waste, polyhydric alcohols, monoprotic organic acids, and xylene with amount that equals to 3% total amount of the first three substances into reactor, and to heat them to 235 degree C under stirring, to tapping react under refluxing, until the reactant is transparent and uniform, to cool to 170degree C, to add the 200# solvent oil, then to dilute and to take out the reactant. The process uses terephthalic acid waste, which protects the environment, reduces the productive cost, and improves the quality of productions.

Description

technical field [0001] The invention relates to a production process of alkyd resin, in particular to a process for producing alkyd resin by using waste terephthalic acid. Background technique [0002] Alkyd resin is a transparent viscous liquid made from soybean oil, synthetic fatty acid, phthalic anhydride, pentaerythritol, hexamethanol, etc. under the state of solvent reflux, after esterification reaction, adding toluene or xylene. The obtained coating film has good overall performance, and has the advantages of dryness, gloss, flexibility, and good adhesion. Some properties of the film, among which the amino baking varnish combined with the amino resin is the most important) After the paint, it can be made into a varnish or a color paint. These products can be sprayed, brushed, dipped, rolled, etc. construction. The main feature of the existing production of alkyd resin using terephthalic acid is that it uses high-purity terephthalic acid raw materials, soybean oil fat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/183C08G63/78
Inventor 王龙
Owner 王龙