Liquid crystal epoxy modified water-based alkyd resin and preparation method thereof

A water-based alkyd resin and liquid crystal epoxy technology, used in polyester coatings, coatings, etc., can solve the problems of slow drying speed of paint film, poor water resistance, and acid value paint is easy to thicken, and achieves fast drying speed, Superior water resistance, excellent decorative and protective effects

Inactive Publication Date: 2012-01-11
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, water-based alkyd resin has defects such as slow drying speed of the paint film, poor water resistance, and high acid value, and the paint made of it is easy to return to roughness, and its application is subject to certain restrictions.

Method used

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  • Liquid crystal epoxy modified water-based alkyd resin and preparation method thereof
  • Liquid crystal epoxy modified water-based alkyd resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The present embodiment is made by following raw material proportioning: 19% maleic anhydride linolenic acid, 6% liquid crystal epoxy resin bis 4-glycidyl ether hydroquinone benzoate (p -PEPB), 0.03% catalyst I: tin octoate, 1% organic sulfonate oligomer, 4% 2,4-diethyl-1,5-pentanediol, 11% trimethylolpropane , 24.5% isophthalic acid, 0.07% catalyst II: dibutyltin dilaurate, 5% trimellitic anhydride, 16.93% butyl ether, 13% dibutanol. Maleinized linoleic acid is made from: 88-93% linoleic acid, 7-12% maleic anhydride. Organosulfonate oligomer is composed of: 35% sodium 5-sulfonate isophthalate, 64.92% 2,4-diethyl-1,5-pentanediol and 0.05% Catalyst II: Dilauryl Made of dibutyltin acid.

[0026] Its preparation method comprises the following steps:

[0027] (1) Production of maleic anhydrided linoleic acid: Add the linoleic acid and maleic anhydride of the above formula to a four-necked flask with a stirrer, condenser, and thermometer, and feed CO 2 , heat up to 205±2°...

Embodiment 2

[0037] The present embodiment is 22% maleic anhydride linolenic acid made by the following raw material ratio, 7% liquid crystal epoxy resin bis 4-glycidyl ether hydroquinone benzoate (p- PEPB), 0.03% Catalyst I: Zirconium Octanoate, 2% Organic Sulfonate Oligomer, 8% Neopentyl Glycol, 8% Pentaerythritol, 20% Phthalic Anhydride, 0.07% Catalyst II: Dilauric Acid Butyl tin, 3% trimellitic anhydride, 16.93% butyl ether, 13% dibutanol. Maleinized linoleic acid is made from: 88-93% linoleic acid, 7-12% maleic anhydride. The organosulfonate oligomer is composed of: 35% sodium tartrate, 64.92% neopentyl glycol and 0.05% Catalyst II: dibutyltin dilaurate. Its preparation method is with embodiment 1.

Embodiment 3

[0039] The present embodiment is made by the following raw material ratio: 21% maleic anhydride linolenic acid, 8% liquid crystal epoxy resin bis 4-glycidyl ether hydroquinone benzoate (p -PEPB), 0.03% catalyst I: tin octoate, 2% organic sulfonate oligomer, 5% 1,3-butanediol, 10% trimethylolpropane, 20% maleic anhydride, 0.07% Catalyst II: dibutyltin dilaurate, 4% trimellitic anhydride, 16.93% butyl ether, 13% dibutanol. Maleinized linoleic acid is made from: 88-93% linoleic acid, 7-12% maleic anhydride. The organic sulfonate oligomer is composed of: 35% sodium succinic anhydride sulfonate, 64.92% 1,3-butanediol and 0.05% catalyst II: dibutyltin dilaurate. Its preparation method is with embodiment 1.

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Abstract

The invention discloses a liquid crystal epoxy modified water-based alkyd resin and a preparation method thereof and belongs to the field of macromolecule synthetic water-based alkyd resin. The invention overcomes the defects of environment pollution, damage to the human body health, resource waste, inflammability, explosion and the like of the conventional solvent borne paint. A method for preparing water-based alkyd resin by the combination of a salifying method and a hydrophilic group introducing method is adopted. Linolenic acid is firstly maleated, then liquid crystal epoxy and organic sulfonate oligomer are introduced, trimethylolpropane and neopentyl glycol are optimally combined, the salifying method and the hydrophilic group introducing method are combined, an esterification catalyst is added, and the production process is safe and simple. The resin is dispersed in water after being neutralized by amine, and the water dispersibility and pigment wetting dispersibility of the resin are improved. The liquid crystal epoxy modified water-based alkyd resin is brown transparent liquid with the viscosity higher than or equal to 25 seconds, non-volatile matter accounts for 68 +/- 2%, and the acid value is 22-32mgKOH/g.

Description

technical field [0001] The invention relates to a liquid crystal epoxy-modified water-based alkyd resin and a preparation method thereof, belonging to the field of polymer synthetic water-based alkyd resins. Background technique [0002] Alkyd resin has excellent comprehensive properties and is the most widely used type of resin in coating synthetic resins. Its raw material sources are abundant, the price is low, there are many varieties, the formula changes greatly, it is convenient for chemical modification and has good performance, and it does not completely depend on petroleum. Chemical products are increasingly showing their superiority in today's high oil price, but most of the traditional solvent-based alkyd resins need to use a large amount of organic solvents, which wastes a lot of resources and causes serious pollution to the environment. In order to strengthen environmental protection, various countries More and more stringent regulations have been enacted to limi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/688C08G63/676C08L67/08C09D167/08
Inventor 张晓娜花东栓郭晓峰商艳明李研
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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