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Alkyd resin for quickly drying alkyd enamel paint and preparation method thereof

A technology of alkyd enamel and alkyd resin, applied in the field of resin, can solve the problems of high cost and achieve the effects of improved product quality, fast drying at room temperature, and increased crosslinking density

Active Publication Date: 2012-02-01
山东奔腾漆业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The resins used to make fast-drying alkyd enamel include styrene-modified alkyd resins, acrylic-modified alkyd resins, etc., but there is a situation that the market is unacceptable due to high cost

Method used

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  • Alkyd resin for quickly drying alkyd enamel paint and preparation method thereof
  • Alkyd resin for quickly drying alkyd enamel paint and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0021] A kind of preparation method of quick-drying alkyd enamel alkyd resin of the present invention comprises the following steps:

[0022] A. Primary esterification: Put 50-55 parts of soybean oil fatty acid, 19.3-20.4 parts of glycerin, 27.1-31.8 parts of terephthalic acid, and 0.03-0.09 parts of hypophosphorous acid into the reactor, close the feeding port, and heat up to 245- 255°C, turn on the cooling water of the reflux condenser, keep warm and reflux for 4-6 hours until the resin liquid is transparent, and the acid value detected by the sampling center control is below 2mgKOH / g; the product is the A-stage resin, and the temperature of the A-stage resin is raised to 245-255 °C, the purpose is that it evaporates together with the water produced in the esterification reaction, cools through the condenser, and then sinks the water through the water separator. The resin in stage A flows back into the kettle, and the reaction is completed in the specified direction. The aci...

Embodiment

[0030] Put the raw materials listed in the following table 1 according to the ratio of parts by weight into the reaction kettle, close the feeding port, start stirring when the temperature rises, and turn on the cooling water of the reflux condenser when the temperature rises to 245-255°C, and keep the temperature and reflux for 4-6 hours to The resin liquid is transparent, and the acid value detected by the sampling center control is below 2mgKOH / g. After the material is transparent, the temperature is lowered to 180 ° C ~ 200 ° C, and the feeding port is opened. At the same time, the vacuum is turned on, and the volatilized xylene gas is sucked into the recovery tank. , put in 30-36 parts of petroleum resin maleic anhydride adducts, turn off the vacuum, add 2 parts of xylene, adjust the temperature to 210°C-220°C, and keep warm and esterify until the acid value measured by the central control is 20mgKOH / g in the reflux state Hereinafter, the gravitational tube viscosity is 7 ...

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Abstract

The invention discloses alkyd resin for quickly drying alkyd enamel paint and a preparation method thereof. The alkyd resin for quickly drying alkyd enamel paint is prepared by twice esterification from the raw materials and an auxiliary material, wherein the raw materials comprise the following components in parts by weight: 50-55 parts of soybean oil fatty acid, 19.3-20.4 parts of glycerol, 27.1-31.8 parts of terephthalic acid, 30-36 parts of petroleum resin maleic anhydride addition compound and 0.03-0.09 part of hypophosphorous acid; and the auxiliary material comprises 2 parts by weight of xylene. The alkyd resin for quickly drying alkyd enamel paint has the advantages that: the drying time is shortened to 1 hour or below from original 4-5 hours on the premise of not increasing the resin cost, and the hardness is increased to more than 0.4 from 0.25, thereby meeting the normal-temperature quick drying requirement of customers.

Description

technical field [0001] The invention relates to a resin, in particular to an alkyd resin for quick-drying alkyd enamel. The present invention also relates to a preparation method of the above-mentioned alkyd resin for quick-drying alkyd enamel. Background technique [0002] Alkyd enamel is a product series with national standard technology, through air oxidation to produce cross-linking reaction to achieve surface drying and actual drying. The standard stipulates that the surface should be dry at 23°C±2°C. Under the condition of relative humidity of 50±5%, surface drying should not exceed 8 hours, and actual drying should not exceed 15 hours. But market users need a fast drying enamel to improve production efficiency, and the cost is not higher than the current situation. [0003] The resins used to make fast-drying alkyd enamel include styrene-modified alkyd resins, acrylic-modified alkyd resins, etc., but there is a situation that the market is difficult to accept becau...

Claims

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Application Information

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IPC IPC(8): C08G63/692C08G63/52C08G63/49C09D167/08C09D5/23
Inventor 王辉
Owner 山东奔腾漆业股份有限公司
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