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Modified phenolic resin and application thereof in anti-corrosive paint

A technology of phenolic resin and anti-corrosion coating, applied in the direction of anti-corrosion coating, epoxy resin coating, coating, etc., to achieve excellent heat resistance, high bonding strength, and improve the brittleness of phenolic resin

Inactive Publication Date: 2010-12-01
GUANGZHOU CHEM GROUTING CO LTD CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to use α, β-furan acrolein instead of formaldehyde to synthesize modified phenolic resin, solve the problems caused by formaldehyde while maintaining the excellent performance of modified phenolic resin

Method used

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  • Modified phenolic resin and application thereof in anti-corrosive paint
  • Modified phenolic resin and application thereof in anti-corrosive paint
  • Modified phenolic resin and application thereof in anti-corrosive paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A. Preparation of α, β-furan acrolein

[0025] Take 10g solid carrier NaOH / Al 2 o 3 Catalyst and 26ml n-butyraldehyde are in four-necked flask, and condensing device is installed, and N is passed into one mouth of flask. 2 For about 10 minutes, adjust the temperature of the water bath to 40°C, slowly add 20ml of furfural dropwise into the syringe and start the mixer to stir evenly. React for 3 hours, filter and wash with deionized water until neutral, and dry over anhydrous magnesium sulfate to obtain a reddish-brown oily transparent liquid, which is 3-furyl-2-ethyl-propenal.

[0026] The prepared 3-furyl-2-ethyl-acrolein has a molecular weight of 150g / mol and a density of 1.079g / cm 3 , boiling range 208 ~ 210 ℃.

[0027] B. Synthesis of modified phenolic resin

[0028] Equipped with reflux condenser, stirrer, thermometer and N 2 Add 37.6g of phenol and 0.3g of sodium hydroxide catalyst into the four-necked flask with gas inlet, heat to 150°C, and drop 30.0g of 3-...

Embodiment 2

[0035] A. Preparation of α, β-furan acrolein

[0036] Take 31ml of n-valeraldehyde in a four-neck flask, install a condensing device, and feed N into one mouth of the flask. 2 For about 10 minutes, adjust the temperature of the water bath to 45°C, add 2.0g of potassium hydroxide and slowly add 20ml of furfural dropwise, and start the mixer to stir evenly. React for 3 hours, filter and wash with deionized water until neutral, and dry over anhydrous magnesium sulfate to obtain a reddish-brown oily transparent liquid, which is 3-furyl-2-propyl-propenal.

[0037] The prepared 3-furyl-2-propyl-acrolein has a molecular weight of 164g / mol and a density of 1.021g / cm 3 , boiling range 224 ~ 226 ℃.

[0038] B. Synthesis of modified phenolic resin

[0039] Equipped with reflux condenser, stirrer, thermometer and N 2 Add 28.2g of phenol and 0.7g of sodium carbonate catalyst into the four-necked flask with gas inlet, heat to 150°C, and drop 32.8g of 3-furyl-2-propyl-acrolein into the s...

Embodiment 3

[0046] A. Preparation of α, β-furan acrolein

[0047] Take 39ml of n-heptanal in a four-necked flask, install a cooling device, and feed N into one mouth of the flask. 2 For about 10 minutes, adjust the temperature of the water bath to 50°C, add 20ml of furfural and 10ml of 30% hydrochloric acid dropwise at the same time, and start the mixer for stirring. React for 3 hours, filter and wash with deionized water until neutral, and dry over anhydrous magnesium sulfate to obtain a reddish-brown oily transparent liquid, which is 3-furyl-2-pentyl-propenal.

[0048] The prepared 3-furyl-2-pentyl-acrolein has a molecular weight of 192g / mol and a density of 0.960g / cm 3 , boiling range 252 ~ 254 ℃.

[0049] B. Synthesis of modified phenolic resin

[0050] Equipped with reflux condenser, stirrer, thermometer and N 2 Add 28.2g of phenol and 0.25g of potassium hydroxide catalyst to the four-necked flask with gas inlet, heat to 150°C, and add 38.4g of 3-furyl-2-pentyl-acrolein dropwise to...

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Abstract

The invention relates to a new modified phenolic resin and a modified phenolic / epoxy resin anti-corrosive paint prepared by utilizing modified phenolic resin and epoxy resin. The invention solves problems of high formaldehyde toxicity, high volatility, strong irritancy, and the like of raw material of the traditional phenolic resin, and replaces formaldehyde with alpha, beta-furacrolein with high boiling point, low volatility and low toxicity to synthesize the modified phenolic resin with phenol; and therefore, furan rings and flexible side chains are introduced into the modified phenolic resin to form furan resin and improve system brittleness. The modified phenolic resin can be widely used in the fields of plastics, glass reinforced plastic, puddles, adhesives, paints, etc. The modified phenolic / epoxy resin anti-corrosive paint prepared by the modified phenolic resin and the epoxy resin has good performances of the epoxy resin and the furan resin, such as high cohesive force, acid resistance, alkali resistance, high temperature resistance, aging resistance and the like, and can be used for painting ships, oil tanks, pipelines and other structures.

Description

technical field [0001] The invention relates to a polymer anticorrosion coating, in particular to an anticorrosion coating using modified phenolic / epoxy resin as a film-forming agent. technical background [0002] In 1872, German chemist Bayer synthesized phenol-formaldehyde resin for the first time in the laboratory. This is the first synthetic resin and the first synthetic polymer compound created by mankind. Phenol formaldehyde resin, and named Laccain. So far, after long-term in-depth research, people have made great progress in the synthesis theory of phenolic resin, category expansion, resin performance improvement and other aspects, and its application fields are also expanding. In terms of anti-corrosion, phenolic resin is often used as an anti-corrosion material for pipelines, vehicles and ships due to its advantages of heat resistance, acid resistance, alkali resistance, flame retardant, and good electrical insulation. However, the phenolic resin after cross-link...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/04C09D163/00C09D163/02C09D161/08C09D5/08
Inventor 高南张亚峰邝健政邹海良王永珍
Owner GUANGZHOU CHEM GROUTING CO LTD CAS
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