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Benzoic acid modified waterborne alkyd resin and amino plastic baking varnish prepared by same

A water-based alkyd resin, alkyd amino technology, applied in coatings, polyester coatings, etc., can solve the problems of limited use range, poor hardness, low gloss, etc.

Active Publication Date: 2010-09-15
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water-based resin is the most important component of water-based coatings. Water-based alkyd resin is currently the most used resin. It has the advantages of cheap price, good brushability and wettability. The unmodified ones commonly used in the market are currently The paint film made of water-based alkyd resin often has disadvantages such as poor hardness and low gloss, which limit its application range

Method used

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  • Benzoic acid modified waterborne alkyd resin and amino plastic baking varnish prepared by same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] A, preparation of benzoic acid modified water-based alkyd resin:

[0081] 26g of castor oil and 30.1g of trimethylolpropane were heated to 180°C for 1.5h under nitrogen protection, and then 24.5g of isophthalic anhydride, 6g of benzoic acid and 0.007g of terephthalic acid esterification catalyst were added ( Esterification catalyst 4100) produced by Guangzhou Zhiyi Trading Co., Ltd., and install a water separator, continue heating to 220°C, keep warm for reaction, track and monitor the acid value of the reaction system, until the acid value of the system is as low as 10mgKOH / g, cool down to 150°C , add 8g of trimellitic anhydride, keep warm at 170°C until the acid value is 55mgKOH / g, cool down to 100°C, remove the water separator and nitrogen, add 28g of ethylene glycol monobutyl ether, 11g of triethylamine, and react for 0.5 h made benzoic acid modified water-based alkyd resin 120g, sealed and kept for later use.

[0082] B, prepare benzoic acid modified water-based a...

Embodiment 2

[0102] Preparation method and step are with embodiment 1, difference is, the raw material consumption of preparing benzoic acid modified water-based alkyd amino resin baking varnish in step B is as follows:

[0103] Pigment paste:

[0104] Benzoic acid modified water-based alkyd resin 50g

[0105] Iron red 30g

[0106] BYK-190 1.5g

[0107] Ethylene glycol monobutyl ether 18.5g

[0108] Benzoic acid modified water-based alkyd amino resin baking varnish:

[0109] Benzoic acid modified water-based alkyd resin 24.5g

[0110] Pigment paste 18.8g

[0111] Hexamethoxymelamine resin 7.4g

[0112] Triethylamine 2g

[0113] W-100 1.8g produced by BSK

[0114] Ethylene glycol monobutyl ether 15.2g

[0115] BYK-346 0.2g

[0116] BYK-024 0.1g

[0117] water 30g

[0118] Other operations and conditions were the same as in Example 1 to obtain 100 g of benzoic acid modified water-based alkyd amino resin baking varnish.

Embodiment 3

[0120] Preparation method and step are with embodiment 1, difference is, the raw material consumption of preparing benzoic acid modified water-based alkyd amino resin baking varnish in step B is as follows:

[0121] Pigment paste:

[0122] Benzoic acid modified water-based alkyd resin 50g

[0123] Everlasting Yellow 20g

[0124] Ethylene glycol monobutyl ether 29.2g

[0125] BYK-190 0.8g

[0126] Benzoic acid modified water-based alkyd amino resin baking varnish:

[0127] Benzoic acid modified water-based alkyd resin 14.4g

[0128] Pigment paste 31.5g

[0129] Hexamethoxymelamine resin 6.7g

[0130] Triethylamine 2g

[0131] W-100 2.6g produced by BSK

[0132] Ethylene glycol monobutyl ether 12.5g

[0133] BYK-346 0.2g

[0134] BYK-024 0.1g

[0135] water 30g

[0136] Other operations and conditions were the same as in Example 1 to obtain 100 g of benzoic acid modified water-based alkyd amino resin baking varnish.

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Abstract

The invention discloses a benzoic acid modified waterborne alkyd resin and a preparation method thereof and also discloses an application of the benzoic acid modified waterborne alkyd resin in preparing benzoic acid modified waterborne alkyd amino resin baking varnish and an application method thereof. The benzoic acid modified waterborne alkyd amino resin baking varnish as waterborne baking varnish for ferrous products has the advantages of good stability and convenient, safe construction, no toxic solvents releasing, and the like, also has good gloss, weather resistance, water resistance, acid-base resistance, scrubbing resistance, high adhesive force and impact resistance after forming a film and is superior to the traditional solvent-based baking varnish in combination property; and in addition, the invention overcomes the defects of low hardness and poor gloss of the traditional waterborne alkyd resin and has simple and easy manufacturing process, is environmental-friendly and saves the energy by using water as a solvent.

Description

(1) Technical field [0001] The invention relates to a benzoic acid-modified water-based alkyd resin and a benzoic acid-modified water-based alkyd amino resin baking varnish prepared by using the benzoic acid-modified water-based alkyd resin. (2) Background technology [0002] With the development of society and the progress of the times, people's awareness of environmental protection is getting stronger and stronger, and the requirements for industrial environmental protection are getting higher and higher. At present, domestic iron products use solvent-based coatings. Although solvent-based coatings have many advantages, the emission of VOC It has always been unable to meet the standards. The volatilization of organic solvents has caused a great threat to the living environment of human beings. Not only is it easy to cause flammable, explosive and toxic and harmful gases to escape during production, storage, transportation and construction, there is a great potential safety ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/49C09D167/08C09D161/20C09D7/12
Inventor 张诚吕翠玉顾卓韦
Owner ZHEJIANG UNIV OF TECH
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