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Environmentally-friendly high-performance aqueous alkyd resin preparation method

A water-based alkyd resin and alkyd resin technology, applied in the field of coatings, can solve the problems of water-based alkyd resin performance degradation, secondary pollution of the environment, insignificant flame retardancy, etc., to increase adhesion, prevent secondary pollution, The effect of excellent mechanical properties

Active Publication Date: 2019-11-05
浙江天成工程设计有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the current water-based alkyd resin by adding fillers and flame retardants in a blending manner, which may easily lead to a decrease in the performance of the water-based alkyd resin, and the improvement of flame retardancy is not obvious, and it is easy to cause secondary pollution to the environment, etc. problem, a preparation method of an environmentally friendly high-performance water-based alkyd resin was proposed

Method used

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  • Environmentally-friendly high-performance aqueous alkyd resin preparation method

Examples

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Effect test

Embodiment 1

[0035] Embodiment 1: a kind of preparation method of environment-friendly high-performance water-based alkyd resin comprises the following preparation steps:

[0036] 1) Mix 20 parts of soy oil, 40 parts of epoxy resin and 0.1 part of triphenylphosphine, protect with nitrogen, stir and react at 110°C for 2 hours to obtain epoxy ester;

[0037] 2) Mix 30 parts of soy oleic acid, 12 parts of isophthalic anhydride, 13 parts of maleic anhydride, 20 parts of trimethylolpropane, 0.1 part of dibutyltin dilaurate and 15 parts of xylene, at 180°C Stir and react under low temperature, keep it warm for 1 hour, then raise the temperature to 240°C, and keep warm for 1 hour for esterification, until the acid value is lower than 20mgKOH / g, and the alkyd resin is obtained;

[0038] 3) Mix 30 parts of epoxy ester, 100 parts of alkyd resin, 2 parts of dibutyltin dilaurate and 10 parts of xylene, stir and react at 150°C, keep warm for 1.5h until the acid value is lower than 10mgKOH / g, Obtain ep...

Embodiment 2

[0043] Embodiment 2: a kind of preparation method of environment-friendly high-performance water-based alkyd resin comprises the following preparation steps:

[0044] 1) Mix 50 parts of ricinoleic acid, 25 parts of epoxy resin and 0.5 part of triphenylphosphine, protect with nitrogen, stir and react at 130°C for 1.2h to obtain epoxy ester;

[0045] 2) Mix 60 parts of ricinoleic acid, 4 parts of phthalic anhydride, 6 parts of isophthalic anhydride, 35 parts of pentaerythritol, 0.3 parts of dibutyltin dilaurate and 13 parts of xylene, and stir the reaction at 150°C , keep warm for 2 hours, then raise the temperature to 230°C, and keep warm for 2 hours until the acid value is lower than 20mgKOH / g to obtain alkyd resin;

[0046] 3) Mix 20 parts of epoxy ester, 120 parts of alkyd resin, 1 part of dibutyltin dilaurate and 20 parts of xylene, stir and react at 160°C, keep it warm for 1h until the acid value is lower than 10mgKOH / g, and get Epoxy ester modified alkyd resin;

[0047]...

Embodiment 3

[0051] Embodiment 3: a kind of preparation method of environment-friendly high-performance water-based alkyd resin comprises the following preparation steps:

[0052] 1) Mix 35 parts of linoleic acid, 55 parts of epoxy resin and 1 part of triphenylphosphine, protect with nitrogen, stir and react at 150°C for 0.5h to obtain epoxy ester;

[0053] 2) Mix 45 parts of linoleic acid, 18 parts of phthalic anhydride, 22 parts of maleic anhydride, 50 parts of ethylene glycol, 0.5 parts of dibutyltin dilaurate and 10 parts of xylene, and mix them at 165°C Stir the reaction, keep it warm for 1.5h, then raise the temperature to 220°C, and keep warm for 3h for esterification, until the acid value is lower than 20mgKOH / g, and the alkyd resin is obtained;

[0054] 3) Mix 25 parts of epoxy ester, 130 parts of alkyd resin, 3 parts of dibutyltin dilaurate and 25 parts of xylene, stir and react at 170°C, keep warm for 0.5h until the acid value is lower than 10mgKOH / g, Obtain epoxy ester modifie...

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Abstract

The invention relates to an environmentally-friendly high-performance aqueous alkyd resin preparation method, and belongs to the field of coating materials. The preparation method comprises: 1) carrying out a mixing stirring reaction on vegetable oil fatty acid, an epoxy resin and a catalyst; 2) carrying out a mixing stirring reaction on vegetable oil fatty acid, an organic acid anhydride, a polyol, an esterification catalyst and xylene; 3) carrying out a mixing stirring reaction on an epoxy ester, an alkyd resin, an esterification catalyst and xylene; 4) adding aminated nanocellulose aerogelmicroparticles to an epoxy ester modified alkyd resin, and carrying out a mixing stirring reaction; and 5) carrying out pressure reducing distillation on an aerogel-modified alkyd resin, adding an organic acid anhydride, adding a co-solvent and a neutralizing agent, stirring uniformly, and adding water to disperse so as to prepare the environmentally-friendly high-performance aqueous alkyd resin.According to the present invention, the prepared environmentally-friendly high-performance aqueous alkyd resin has characteristics of excellent flame retardancy and excellent hardness, and can effectively prevent the secondary pollution caused by the blending adding of the flame retardant, wherein the polar group on the surface of the aminated nanocellulose aerogel microparticles can further increase the adhesion of the alkyd resin.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a preparation method of an environment-friendly high-performance water-based alkyd resin. Background technique [0002] Alkyd resin is one of the most widely used resin coatings in the field of coatings. It is prepared by esterification of polyacids, polyols, and vegetable oil fatty acids as the main raw materials. According to the content of vegetable oil fatty acids used, it can be divided into long Oily alkyd resin, medium oily alkyd resin and short oily alkyd resin, among them, long oily alkyd resin has weak polarity and good solubility due to its long fatty acid chain segment, and is often used as coating paint , while short-oil alkyd resins have shorter fatty acid chain segments, so they are more polar and poorly soluble, so they are mostly used as baking varnishes. [0003] Water-based alkyd resin is to insert a certain amount of hydrophilic groups such as hydroxyl, amino, and car...

Claims

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Application Information

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IPC IPC(8): C08G63/91C08G63/49C08G59/16C08J9/28C08B15/06
CPCC08B15/06C08G59/1472C08G63/48C08G63/91C08J9/28C08J2201/0522C08J2201/0524C08J2301/08
Inventor 陈中继林成俊
Owner 浙江天成工程设计有限公司
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