Alkyd paint and preparation method thereof

Abstract

The invention discloses alkyd paint and a preparation method thereof. The alkyd paint is prepared from the following raw materials in percentage by weight: 32-40 parts of alkyd resin, 8-12 parts of petroleum resin liquid, 8-15 parts of pigment, 30-38 parts of filler, 0.2-1.0 part of a dispersant, 0.1-2.0 parts of an anti-settling agent, 8-12 parts of a water emulsion, 0.8-2.0 parts of a drier, 0.1-0.5 part of an anti-skinning agent, and 1-10 parts of a solvent. The method disclosed by the invention is simple in process and easily-obtained in raw materials, and the VOC (volatile organic compound) content of the prepared alkyd paint is less than 300 g / L, thereby greatly reducing the environmental hazards. Used 200# solvent oil does not contain aromatic hydrocarbons, therefore, the alkyd paint is low in toxicity, and environment-friendly; part of the solvent is replaced with tap water, therefore, the alkyd paint has the characteristics of low cost, low toxicity, low pollution, and the like; the alkyd paint is dried quickly, the surface drying time is less than 4h, and the hard drying time is less than 24h; the glossiness is good, and more than 85%; the alkyd paint is good in application property and decoration property, and a product paint film is smooth, and excellent in hardness and glossiness.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and relates to an alkyd coating and a preparation method thereof. Background technique [0002] Due to the discharge of a large amount of toxic and harmful waste gas, waste water, and waste residues in the traditional coatings, whether in the manufacturing process or construction application, which pollutes the atmosphere, soil, and water resources, especially solvent-based coatings, more than 50% of them volatilize during construction. Volatile organic compounds (VOCs) are emitted into the atmosphere, posing a serious threat to the human ecological environment. For this reason, countries around the world have formulated corresponding environmental protection regulations according to their own characteristics to limit the emission of VOC in coatings. [0003] With the ever-increasing restrictive regulations on VOC emissions, waterborne alkyd resins can be an effective tool to reduce VO...

AI Technical Summary

Problems solved by technology

[0005] 1. It is possible to temporarily emulsify water in solvent-based alkyd resin, and the system will be unstable during the storage period, resulting in oil-water separation, pigment precipitation, pigment flocculation, thickening of pigment, slow drying time, low gloss or loss of gloss, paint The film is not smooth, the hardness is poor, the effect of opening the can is poor, etc., and the quality cannot reach the indicators of the original standard paint at all.

[0006] 2. Although there are some technologies that replace part of the solvent with water, the storage stability after adding water is not good, and only a small amount of water can be used to replace the solvent. Therefore, the VOC content is high and cannot meet the needs of further environmental protection