Mineral oil defoaming agent for waterborne coating and preparation method of mineral oil defoaming agent

Abstract

The invention discloses a mineral oil defoaming agent for a waterborne coating and a preparation method of the mineral oil defoaming agent. The mineral oil de-foaming agent for the waterborne coating comprises the following components in percentage by weight: 5-15 percent of modified organic polyether, 5-25 percent of white oil, 10-25 percent of wax, 15-40 percent of octyl alcohol, 30-55 percent of sulfonated castor oil, 2-10 percent of an emulsifying agent, 0.1-0.2 percent of a catalyst, 0.1-0.3 percent of a sterilizing agent and 0.6-0.8 percent of a dispersing agent. The mineral oil de-foaming agent for the waterborne coating is formed by refining an organic polyether ester, mineral oil and alcohol composite product through a special process. The mineral oil de-foaming agent has the performance such as self-emulsification, easy dispersion, strong universality, good de-foaming, and lasting foam inhibition; the surface defect cannot be generated or the film-forming property cannot be affected; the mineral oil de-foaming agent has a special effect on the waterborne coating.

Description

Technical field [0001] The invention relates to the field of defoamers, in particular to a mineral oil defoamer for water-based paint and a preparation method thereof. Background technique [0002] The coating production process generally involves feeding, stirring, pressurizing, filtering and other processes. In the stirring process, dispersing agents and wetting agents composed of anionic and nonionic surfactants are used, so it is easy to produce a large amount of If these bubbles are not eliminated in time, it will cause a series of harm. At present, some manufacturers use silicone defoamers, and some manufacturers use non-silicone defoamers. Silicone defoamers are easy to demulsify in this environment, which will affect the quality of the products. In comparison, the use of non-silicone defoamers is more popular, but ordinary non-silicone defoamers have poor defoaming performance, and a non-silicone defoamer with excellent foam suppression performance is needed to solve it;...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a mineral oil defoamer for water-based coatings and a preparation method thereof, aiming to solve the problem that the performance of the defoamer in the prior art needs to be improved