Water emulsification process of alkyd resin coating

Abstract

The invention discloses a water emulsification process of an alkyd resin coating. The coating is generated by proportionally mixing and stirring four or more substances in alkyd resins (high viscosity), an emulsifying agent, distilled water, sulfates, 200# solvent oil, n-butanol and isobutanol according to the following steps: throwing the distilled water and the sulfates into a head tank with stirring according to the proportion and stirring and dissolving the substances for later use; throwing the alkyd resins and the emulsifying agent into an emulsifying kettle, dropwise adding water solution from the head tank when the stirring linear speed is more than 6m / s and controlling the dropwise adding time between 30 minutes and 90 minutes; and stirring and emulsifying the substances for 40-80 minutes at high speed after dropwise adding and using the solvent oil and / or an alcohol solvent to adjust the viscosity. The process has the following characteristics that the water emulsion replaces part of organic solvents and has stable properties, thus reducing the VOC (volatile organic compounds) of the alkyd resin coating, without affecting the properties of the coating; the VOC can be reduced by 10-30% at most and the product reaches the national standard; and the needed equipment investment is low and the water-in-oil alkyd resin emulsion has good stability.

Description

Technical field [0001] The present invention involves the field of alcoholic acid resin coating preparation technology, which specifically involves alcoholic acid resin coating water emulsification process, and reduces the technologies such as volatile organic compounds (VOC) content. [0002] Background technique [0003] In 2011, China's coating industry output reached 10.795 million tons. The industrial protection field had coating demand second only to about 25%of the total output of construction coatings.%, Plus the use of vegetable oil, unlike the non -renewable oil products, which is of great significance to make full use of Earth resources.However, the large amount of solvent -based alcoholic acid resin coatings have a destructive effect on the atmosphere, which will directly affect the human living environment.Therefore, reducing alcoholic acid resin paint VOC is of great significance. [0004] There are various technical routes in the hydration of alcoholic acid resin c...

AI Technical Summary

Problems solved by technology

[0006] 2. The external emulsification technology of alkyd resin paint is difficult to produce according to the general paint production equipment due to the high viscosity after emulsification, and the production process is not easy to realize

[0007] 3. The water emulsification process of the diluent is relatively simple and will not change the paint production process, but high shear force is required for emulsification, and the stability of the emulsified solvent is poor, and the resulting paint also has stability problems