N low-grade water-soluble coatings are made by dissolving polyvinyl alcohol in water and adding other additives such as pigments. In order to improve its performance and reduce its cost, many measures have been taken. The main products are 106, 107 and 803 interior wall coatings. The disadvantage of this kind of coating is that it is not resistant to water and alkali, and the coating is easy to peel off after being wetted. It belongs to low-grade interior wall coating and is suitable for general interior wall decoration. This kind of coating has the advantages of low price, non-toxic and tasteless, and convenient construction. Dry cleaning can't remove powder. Because its film-forming substance is water-soluble, it will always leave some traces after scrubbing with a wet cloth, which is not durable and easy to yellow and change color. However, it is cheap and convenient to build. At present, its consumption is still the largest, accounting for about 50% of the market, and it is mostly used for interior wall decoration of middle and low-grade rooms or temporary rooms.
N latex paint is a kind of latex paint with water as the medium, aqueous solution of acrylate, styrene-acrylic polymer and vinyl acetate polymer as the film-forming substance, and various auxiliary components are added. The film-forming substance is insoluble in water, and the water resistance and weather resistance of the film are greatly improved compared with the first one, leaving no trace after wet scrubbing, and there are different decorative types such as flat light and high light. At present, the decorative effect is similar to that of 106 because of the few colors. In fact, these two kinds of coatings are not of the same grade at all, belonging to middle and high-grade coatings. Although the price is relatively expensive, it occupies an increasing market share because of its excellent performance and decorative effect. A good latex coating has good water resistance, alkali resistance and washing resistance, and the coating will never peel off after being wetted. Generally speaking (under the same conditions of pigment, volume and concentration), styrene-acrylic latex paint has better water resistance, alkali resistance and scrub resistance than ethylene-propylene latex paint, and ethylene-propylene latex paint is better than polyvinyl acetate latex paint (commonly known as latex paint).
N multicolor paint, the film-forming substance of this paint is nitrocellulose, which is dispersed in the water phase in the form of oil-in-water, and a multicolor pattern can be formed by spraying once.
In recent years, another kind of fangci paint belongs to the fourth category. Its decorative effect is exquisite, smooth and elegant, and its price is not high, but its construction technology is complicated and its wet rubbing resistance is poor.