Environment-friendly template paint and preparation method thereof

A stencil paint, an environmentally friendly technology, applied in the petroleum industry, lubricating compositions, etc., can solve the problems of short storage period, poor heat and alkali resistance, poor wear resistance, etc., achieve good storage stability, simple and convenient construction, The effect of improving appearance quality

Inactive Publication Date: 2019-04-05

SHANGHAI HUAYI FINE CHEM CO LTD

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AI-Extracted Technical Summary

Problems solved by technology

[0004] At present, most stencil paints contain aromatic solvents, which have a pungent smell and are toxic and harmful to the human body; and most stencil paints have low flash points and are hazardous chemicals. Therefore, during their transportation, maintenance, storage and use In the process, the relevant laws and regulations on hazardous chemicals must be s...

Abstract

The invention provides environment-friendly template paint which comprises, by weight, 20-40 parts of polyisocyanate compounds, 10-30 parts of polyhydroxy compounds, 40-60 parts of environment-friendly solvents, 0.05-0.5 part of catalysts, 0.01-0.2 part of stabilizers and 1-5 parts of water removal agents. The environment-friendly template paint has good storage stability, the storage life of thepaint can exceed one year at normal temperature, a flashing point of the paint is higher than 61 DEG C, and the paint can be stored and transported according to conventional chemicals, is packaged according to a single component and simple and convenient to construct, does not contain aromatic solvents and has great economic significance and environmental protection significance.

Application Domain

Lubricant composition

Technology Topic

IsocyanateChemistry +3

Image

Examples

Experimental program(2)
Comparison scheme(1)

Example Embodiment

[0048] Example 1-8 Preparation of environment-friendly template paint A1~A8

[0049] The formula of environmentally friendly template paint is shown in Table 1.

[0050] Table 1 Formula of environmentally friendly template paint

[0051]

[0052]

[0053] The preparation method of environment-friendly template paint includes the following steps:

[0054] (1) Add a formula amount of environmentally friendly solvent to the reaction kettle at room temperature;

[0055] (2) Under stirring conditions, add polyisocyanate compound, polyhydroxy compound, catalyst and stabilizer to the reaction kettle in sequence. After stirring evenly, gradually increase the temperature to 85±5°C and keep it at this temperature React for 4±1 hours, then cool down;

[0056] (3). Cool down to below 40°C, add the formulated amount of dewatering agent, stir evenly, filter, and pack after the foam is eliminated to obtain an environmentally friendly template paint.

Example Embodiment

[0059] Example 9-17 Environmental protection type template paint A1~A8 and the template paint performance test of Comparative Example 1

[0060] The solid content, thermal storage stability and closed flash point of the environmentally friendly template paint A1-A8 and the template paint A9 of Comparative Example 1 were tested. The results are shown in Table 2.

[0061] Table 2 Performance comparison of environmentally friendly template paint A1-A8 and template paint A9 of Comparative Example 1

[0062]

[0063] It can be seen from the data in Table 2 that the environmentally friendly template paints A1~A8 prepared in Examples 1-8 are stored at 50°C for 30 days. According to industry experience, they can be stored at room temperature for more than 1 year. The template paint of Comparative Example 1 can only be stored for 15 days. It can be seen that the environmentally friendly template paint of the present invention has excellent thermal stability and long storage time.

[0064] Meanwhile, the flash point of the template paint of Comparative Example 1 was 48°C, and the flash points of the environmentally friendly template paints prepared in Examples 1-8 were all greater than or equal to 62°C, which was significantly higher than the flash point of the template paint of Comparative Example 1. The environment-friendly template paint of the present invention is a non-hazardous chemical template paint, which can be stored and transported as conventional chemicals and does not contain aromatic hydrocarbon solvents, which solves the technical problems that the solvents in the product affect health and damage the environment.

[0065] The environment-friendly template paints A1 to A8 of Examples 1-8 and the template paint A9 of Comparative Example 1 were brush-coated on the template, dried and cured, and then the performance of the template paint was tested. The results are shown in Table 3.

[0066] Table 3 Performance test results of template paint

[0067]

[0068] From the data in Table 3, it can be seen that the surface drying time of the template paint prepared in Examples 1-8 at 25° C. is not more than 2 hours, the actual drying time is much less than 24 hours, and the shortest 8 hours can be solid. Therefore, the environment-friendly template paint of the present invention has a fast drying speed.

[0069] At the same time, the environmentally friendly template paint of the present invention has good abrasion resistance; the resistance to saturated calcium hydroxide solution (80°C) is greater than or equal to 120 hours, even up to 200 hours, without foaming or falling off; the resistance to 3% NaCl is greater than or equal to 720 hours, no rust.

PUM

Property	Measurement	Unit
Flash point	48.0	°C

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

good storage stability
Easy construction

Polyester resin for rapid curing of weather-durable powdery paint by beta-hydroxyalkylamide and preparation method thereof

InactiveCN102443148Ahigh glass transition temperaturegood storage stability

Owner:GUANGZHOU QINGTIAN INDAL

Environment-friendly template paint and preparation method thereof

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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