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Dimethylolpropionic acid modified waterborne phenolic resin and preparation method thereof

A technology of water-based phenolic resin and dimethylol propionic acid, which is applied in coatings, polyester coatings, etc., can solve the problems of flammability, large VOC emissions, and low safety factor, and achieve environmental protection and environmental protection. , the effect of reducing emissions

Inactive Publication Date: 2015-05-20
徐强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Phenolic resin is generally a kind of resin produced by high-temperature polymerization of tung oil, phthalic anhydride, glycerin, pentaerythritol, and No. 200 solvent oil. It is characterized by good weather resistance, but it has large VOC emissions during production and use, and the safety factor is not high. It is flammable and explosive during use and transportation. It is a dangerous chemical and has great pollution to the environment. It is a nationally listed and eliminated product.

Method used

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  • Dimethylolpropionic acid modified waterborne phenolic resin and preparation method thereof
  • Dimethylolpropionic acid modified waterborne phenolic resin and preparation method thereof
  • Dimethylolpropionic acid modified waterborne phenolic resin and preparation method thereof

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preparation example Construction

[0023] On the other hand, the present invention provides the preparation method of above-mentioned water-based phenolic resin, figure 1 A schematic flow diagram of the method for preparing the water-based phenolic resin of the present invention is shown. Such as figure 1 Shown, this preparation method comprises the steps:

[0024] Step 1: Mix 70-90 parts by weight of linseed oil and 10-30 parts by weight of maleic anhydride at room temperature, raise the temperature to 240-250° C., and keep the temperature for 7-9 hours to obtain the first product;

[0025] Step 2: Mix 30-40 parts by weight of tung oil, 10-20 parts by weight of polyols and 0.005-0.01 parts by weight of potassium hydroxide, heat up to 240-250°C and keep warm for 1-1.5 hours;

[0026] Step 3: Cool the reaction product obtained in step 2 to 170-190°C, add 20-30 parts by weight of phthalic anhydride, 8-15 parts by weight of dimethylol propionic acid and 5-10 parts by weight of benzoic acid, and reflux for two T...

Embodiment 1

[0033] The weight ratio of the raw materials of the water-based phenolic resin in this embodiment is: 70 parts of linseed oil, 10 parts of maleic anhydride, 30 parts of tung oil, 10 parts of pentaerythritol, 0.005 parts of potassium hydroxide, 20 parts of phthalic anhydride, 8 parts of dimethylol propionic acid, 5 parts of benzoic acid, 30 parts of butyl ether, and 15 parts of n-butanol.

[0034] The preparation method of present embodiment phenolic resin is:

[0035] Step 1: Mix linseed oil and maleic anhydride at room temperature, raise the temperature to 240°C, and keep the temperature for 7 hours to obtain the first product;

[0036] Step 2: Mix tung oil, pentaerythritol and potassium hydroxide, raise the temperature to 240°C and keep it warm for 1 hour, alcoholysis reaction occurs;

[0037] Step 3: Cool down the alcoholysis product obtained in step 2 to 170°C, add phthalic anhydride, dimethylolpropionic acid and benzoic acid, reflux the xylene and raise the temperature t...

Embodiment 2

[0041] The raw material weight ratio of the phenolic resin in this embodiment is: 90 parts of linseed oil, 30 parts of maleic anhydride, 40 parts of tung oil, 20 parts of pentaerythritol, 0.01 part of potassium hydroxide, 30 parts of phthalic anhydride, 15 parts of dimethylol propionic acid, benzene 10 parts of formic acid, 50 parts of butyl ether, 5 parts of n-butanol.

[0042] The preparation method of the phenolic resin of this embodiment is the same as that of Example 1.

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Abstract

The invention discloses dimethylolpropionic acid modified waterborne phenolic resin which is prepared from the following raw materials in parts by weight: 70-90 parts of linseed oil, 10-30 parts of maleic anhydride, 30-40 parts of tung oil, 10-20 parts of polyalcohol, 0.005-0.01 part of potassium hydroxide, 20-30 parts of phthalic anhydride, 8-15 parts of dimethylolpropionic acid, 5-10 parts of benzoic acid, 30-50 parts of butyl ether and 5-15 parts of n-butyl alcohol. The invention also discloses a preparation method of the waterborne phenolic resin. The waterborne phenolic resin disclosed by the invention is benzene-free, reduces the discharge of VOC, and has high safety coefficient in transport and using processes; and the waterborne phenolic resin not only meets the technical requirements of oleoresin, but also is greatly improved in safety and environmental friendliness, thereby really embodying safety and environmental friendliness.

Description

technical field [0001] The invention relates to the technical field of coating chemicals, in particular to a dimethylol propionic acid-modified water-based phenolic resin used for manufacturing water-based coatings and a preparation method thereof. Background technique [0002] Phenolic resin is generally a kind of resin produced by high-temperature polymerization of tung oil, phthalic anhydride, glycerin, pentaerythritol, and No. 200 solvent oil. It is characterized by good weather resistance, but it has large VOC emissions during production and use, and the safety factor is not high. It is flammable and explosive during use and transportation. It is a dangerous chemical and has a huge pollution to the environment. It is a nationally listed and eliminated product. Contents of the invention [0003] In order to overcome the problems in the prior art, the present invention aims to provide a modified water-based phenolic resin and a preparation method thereof. [0004] On t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/60C08G63/49
CPCC09D167/08C08G63/60
Inventor 徐强
Owner 徐强
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