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General adhesion promoter for paint and method of producing the same

An adhesion promoter, general-purpose technology, applied in the direction of coating, etc., can solve the problem of complex process, achieve the effect of less dosage, excellent compatibility and convenient use

Active Publication Date: 2009-05-13
JINAN HUALIN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Application No. 93106438.4 of the patent "water-based anti-corrosion coating and its preparation method" involves the preparation of a kind of epoxy phosphate: directly use high molecular weight (solid) bisphenol A type epoxy resin, in a small amount of cyclohexanone, n-butanol and ethyl alcohol Heating and dissolving in a mixed solvent of glycol monobutyl ether, and reacting with phosphoric acid at 90-140°C for 2-5 hours to obtain epoxy phosphoric acid ester, wherein phosphoric acid accounts for 0.05-5% of epoxy resin, and the prepared epoxy Phosphate ester improves the adhesion of the paint film, but it is only used for metal anticorrosion, and the process is complicated

Method used

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  • General adhesion promoter for paint and method of producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In a 500 ml three-necked flask, add 30% propylene glycol methyl ether acetate, 10% n-butanol, 5% deionized water, start stirring, add 15% chlorinated polypropylene resin, its chlorine content At 25℃, the viscosity in 20% toluene solution is 260mpa.s and the pH value is 6.3. After the chlorinated polypropylene resin is completely dissolved, add 30% epoxy resin with a value of 0.44 and a molecular weight of 380 After the phenol A epoxy resin is continuously stirred and dispersed uniformly, 10% phosphoric acid with a mass concentration of 85% is added dropwise, and the product of the present invention is obtained by continuing to stir for 2.5 hours.

Embodiment 2

[0040] In a 500 ml three-necked flask, add 20% propylene glycol methyl ether acetate, 20% n-butanol, 2% deionized water, start stirring, and add 20% chlorinated polypropylene resin. The chlorine content The viscosity is 680mpa·s and the pH value is 7.0 in a 20% toluene solution at 25℃. After the chlorinated polypropylene resin is completely dissolved, add 40% bisphenol with an epoxy value of 0.51 and a molecular weight of 210. After the A-type epoxy resin is continuously stirred and dispersed uniformly, 20% phosphoric acid with a mass concentration of 85% is added dropwise, and the product of the present invention is obtained by continuing to stir for 3 hours.

Embodiment 3

[0042] In a 500 ml three-necked flask, add 26% propylene glycol methyl ether acetate, 13% n-butanol, 3% purified water, start stirring, add 18% chlorinated polypropylene resin, the chlorine content is 30%, at 25℃, 20% toluene solution has a viscosity of 1340mpa·s and a pH of 5.3. After the chlorinated polypropylene resin is completely dissolved, add 20% bisphenol A with an epoxy value of 0.56 and a molecular weight of 180 After the epoxy resin is continuously stirred and dispersed uniformly, 5% phosphoric acid with a mass concentration of 83% is added dropwise, and stirring is continued for 2 hours to obtain the product of the present invention.

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Abstract

The invention relates to an adhesive force accelerant for a universal coating and a preparation method thereof. The adhesive force accelerant consists of the following raw materials in weight percentage: 20 to 40 percent of epoxy resin, 10 to 30 percent of chlorinated polypropylene resin, 20 to 40 percent of propylene glycol methyl ether acetate, 10 to 20 percent of n-butyl alcohol, 2 to 5 percent of water and 5 to 20 percent of phosphoric acid. According to the proportion, the propylene glycol methyl ether acetate, the n-butyl alcohol and the water are sequentially added into a vessel, are started to stir and are added with the chlorinated polypropylene resin; and upon complete dissolve, the solution is added with the epoxy resin, is evenly stirred, is dripped with the phosphoric acid and is continuously stirred for 2 to 3 hours to obtain the adhesive force accelerant. The adhesive force accelerant has the advantages of strong universality, excellent intermiscibility, low cost, small use amount, simple production process and convenient use.

Description

Technical field [0001] The invention relates to an adhesion promoter for coatings and a preparation method thereof, in particular to a universal coating adhesion promoter that can be applied to metal substrates and various plastic substrates at the same time, which can effectively improve the coating and Adhesion to the substrate. Background technique [0002] Adhesion promoters are compounds that can improve the bond strength between the coating and the substrate. Generally, the molecular chain ends of such compounds contain two different functional groups, one of which can react with the surface of the substrate, and the other can react with the coating matrix resin. [0003] The types of adhesion promoters can be roughly divided into two categories according to the interface between the coating and the substrate. One is the adhesion promoter that improves the bond strength between the coating and the inorganic substrate, and the other is the adhesion promoter that improves the...

Claims

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Application Information

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IPC IPC(8): C09D7/12
Inventor 张景海郭希刚刘桂香杨晓泉陈立静
Owner JINAN HUALIN CHEM
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