High-hydroxy phenolic resin prepared by using phenols residues as raw material, and application of high-hydroxy phenolic resin to production of high-temperature-resistant paint

A high-hydroxyl phenolic resin and residue technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of complex treatment process, pollutant discharge, environmental pollution, etc., and achieve simple production process, low equipment investment, and comprehensive cost. low effect

Inactive Publication Date: 2012-10-31
LANZHOU PETROCHEM COLLEGE OF VOCATIONAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods can only reduce the content of harmful substances in the residue to a certain extent, but they are not thorough. There are still a large amount of pollutants discharged into the environment, causing environmental pollution. At the same time, the traditional pollution treatment process is complicated, the investment is large, and the cost is high. Residue disposal channels are imminent

Method used

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  • High-hydroxy phenolic resin prepared by using phenols residues as raw material, and application of high-hydroxy phenolic resin to production of high-temperature-resistant paint
  • High-hydroxy phenolic resin prepared by using phenols residues as raw material, and application of high-hydroxy phenolic resin to production of high-temperature-resistant paint
  • High-hydroxy phenolic resin prepared by using phenols residues as raw material, and application of high-hydroxy phenolic resin to production of high-temperature-resistant paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 1. Preparation of high hydroxyl phenolic resin

[0047]Add 100 parts of phenol residue, 50 parts of dicyclopentadiene, 80 parts of terpene resin, 100 parts of water, 0.5 parts of calcium oxide, and 1 part of hexamethylenetetramine into the reaction kettle, raise the temperature to 100°C, and add 50 parts of formaldehyde After 4 hours of reaction, start to add 10 parts of toluene, 50 parts of tung oil, 100 parts of pentaerythritol, 70 parts of fumaric acid, 13 parts of lead oxide, heat up to 120 ° C, and dehydrate for 2 hours; then continue to slowly heat up to 220 ° C, and react for 10 parts Hours; measure viscosity and acid value, when the system viscosity is 10-12s / Grignard tube 25 ℃, solid acid value ≤ 20mgKOH / g, lower the temperature to 150 ℃, use toluene: butyl acetate = 1: 1 mixed solvent Dilute to a viscosity of 10-15s / Grignard tube at 25°C, solid acid value ≤ 20mgKOH / g, solid hydroxyl value 150mgKOH / g, solid content 60±2%, filter and pack to obtain the modified ...

Embodiment 2

[0062] 1. Preparation of high hydroxyl phenolic resin

[0063] Add 100 parts of cresol residue, 60 parts of dimethylcyclopentadiene, 70 parts of furan resin, 100 parts of water, 1 part of zinc oxide, and 2 parts of triethylamine into the reaction kettle, raise the temperature to 90°C, and add formaldehyde 40 parts, after reacting for 5 hours, start to add 10 parts of xylene, 40 parts of linseed oil, 100 parts of pentaerythritol, 50 parts of maleic anhydride, 30 parts of phthalic anhydride, 2 parts of lithium hydroxide, heat up to 140°C, and dehydrate for 2 hours; Then continue to slowly raise the temperature to 240°C, and react for 10 hours; measure the viscosity and acid value, when the system viscosity is 10-12s / Grignard tube 25°C, and the solid acid value is ≤20mgKOH / g, cool down to 150°C, and use a mixed solvent ( Toluene:xylene=1:1) Dilute to viscosity 20-25s / Grignard tube 25℃, solid acid value ≤20mgKOH / g, solid hydroxyl value 140mgKOH / g, solid content 50±2%, filter, pack...

Embodiment 3

[0076] 1. Preparation of high hydroxyl phenolic resin

[0077] Put 100 parts of hydroquinone residue, 70 parts of dicyclopentadiene, 100 parts of rosin, 150 parts of water, 1 part of manganese dioxide, and 5 parts of ammonia water into the reaction kettle, raise the temperature to 100°C, add 70 parts of formaldehyde, and react 5 Hours later, start to add 15 parts of xylene, 70 parts of oleic acid, 30 parts of linoleic acid, 80 parts of pentaerythritol, 30 parts of glycerin, 50 parts of fumaric acid, and 80 parts of terephthalic acid, heat up to 150°C, and dehydrate for 2 hours; Then continue to slowly raise the temperature to 210°C, and react for 7 hours; measure the viscosity and acid value, when the system viscosity is 10-12s / Grignard tube 25°C, and the solid acid value is ≤20mgKOH / g, cool down to 150°C, and use a mixed solvent ( Xylene: butyl acetate = 1:1) dilute to viscosity 15-20s / Grignard tube 25°C, solid acid value ≤ 20mgKOH / g, solid hydroxyl value 120mgKOH / g, solid co...

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Abstract

The invention provides a high-hydroxy phenolic resin. Phenols residues and aldehydes compounds are used as main raw materials and are subjected to function modification by using an unsaturated compound or polymer, the high-hydroxy phenolic resin is obtained through a series of chemical reactions, then the high-hydroxy phenolic resin is used as a main film forming material, is compounded with laminar inorganic mineral materials such as glass flakes, and then crosslinked and cured by using polyurethane resin or amino resin to prepare the high-temperature-resistant paint which has the advantages of high drying speed, good adhering force, large hardness, high gloss, good heat resistance, water resistance, strong solvent resistance and the like, and is suitable for heat-resistant corrosion-proof coatings with high decoration on the surface of devices such as a chemical machinery device, a pipeline, a flue, a storage tank and a heat radiator. According to the invention, zero emission of the phenols residues is realized, the problem of environment pollution caused by the phenols residues is radically solved, and the effects of comprehensive treatment and waste material recycling is achieved. Meanwhile, a new variety of coating products is increased, the application range of phenolic coatings is enlarged, and the cost of corresponding coatings is lowered.

Description

technical field [0001] The invention belongs to the technical field of chemical industry and relates to the treatment and comprehensive utilization of phenolic residues, in particular to a high-hydroxyl phenolic resin prepared from phenolic residues; the invention also relates to the use of high-hydroxyl phenolic resins in the production of high-temperature-resistant paint in the application. Background technique [0002] Phenolic compounds are a kind of fine chemical products. During the production process of phenolic products, a large number of residues will be produced. The residue amount is about 10-12% of the total material amount, and the mixed phenols are about 20-30% of the total residue amount. The rest are various ethers, ketones, quinones, salts, oligomers and other substances, which will cause environmental pollution and affect human health and the creation of a harmonious environment when discharged into the natural environment. Therefore, the "three wastes" man...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/32C08G8/30C08G8/28C09D161/14C09D175/04C09D161/20C09D7/12
Inventor 吕维华伍家卫唐蓉萍索陇宁何小荣杨兴锴吕江平尚秀丽周艳青甘黎明周锦
Owner LANZHOU PETROCHEM COLLEGE OF VOCATIONAL TECH
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