Water-based acrylic acid top-coat

Abstract

The present invention relates to a water-based acrylic coating which is produced by grinding, dispersing and other processes after the base material of water-based acrylic emulsion is mixed with pigment, filler, additives, co-solvents and water. The water-based acrylic coating of the invention has the same finishing effect as the oiliness acrylic coating and the glossiness can reach forty percent. The water-based acrylic coating shows good water-resistance in the early stage, which passes the water-sealing test. In addition, secure and convenient in application, the water-based acrylic coating has no pollution to the environment and is harmless to the workers. Suitable for high-pressure airless spraying, the water-based acrylic coating has high operation efficiency. The thickness of a single coating layer is thirty to one hundred micron and no more coating layer is needed as no sagging or cracking can be found in a single coating layer. The water-based acrylic coating can not only be used for the decoration and protection of the outer surface of a container, but also can be widely used as antirust for the iron and steel parts of transportation means like automobiles, trains and ships; of structures like bridges, towers, doors and windows; and of facilities like tanks and pipes.

Description

technical field [0001] The invention relates to a water-based paint, in particular to a water-based acrylic finish paint for containers. Background technique [0002] Traditional container coatings are mostly solvent-based coatings. Common varieties include epoxy, chlorinated rubber, acrylic, polyurethane, etc., which contain a large amount of organic solvents. These solvents are harmful to the health of construction workers and pollute the environment. Since the early 1970s, the development of environmentally friendly anti-corrosion and anti-rust paints such as high solid content, solvent-free, powder and water-based paints has been carried out in foreign countries. Among them, water-based paints have received more research because of their low cost, safe and convenient construction, and easy control of film thickness. . However, due to technical difficulties, great progress has not been made for a long time. Since the mid-1980s, the environmental protection regulations o...

AI Technical Summary

Problems solved by technology

Water-based acrylic topcoats can meet weather resistance requirements, but the gloss of current water-based acrylic topcoats is lower than that of oil-based acrylic topcoats, and the gloss is far less than 50%, generally only 10-20%, which cannot achieve the effect of oil-based topcoats

At the same time, due to the fast pace of container production, higher requirements are put forward for the initial water resistance of the topcoat. Generally, a water-tight test is done one hour after baking at low temperature (60-80°C), and the surface is required to be free of pinholes and bubbles, while None of the current water-based acrylic topcoats can meet this requirement