Paint stripper of oil emulsion-in-water

Abstract

The invention discloses an oil-in-water emulsion paint remover. The compositions in percentage by weight of the paint remover are: 2 to 20 percent of nucleophilic monomer, 20 to 60 percent of macromolecular solvent, 3 to 10 percent of gamma-butyrolactone, 3 to 15 percent of alkyl butyl glycol ether, 0.5 to 3 percent of surface active agent (wherein the ratio between a non-ionic surface active agent and an ionic surface active agent is between 2:3 and 3:2 according to mass ratio), 2 to 5 percent of thickening agent, 1.5 to 4 percent of corrosion inhibitor and the balance being water. The oil-in-water emulsion paint remover does not contain a volatile chlorinated organic solvent or other haloid organic solvents, strong acid and strong base; meanwhile, the operative temperature of the paint remover is normal temperature, and the paint remover does not need to be heated; moreover, no oil film is formed, i.e. no secondary coating is needed.

Description

technical field [0001] The invention relates to a paint remover, in particular to a green and environment-friendly oil-in-water emulsion type paint remover. Background technique [0002] After long-term exposure, the paint film will age, crack, peel and fall off, causing the paint film to lose its protective effect. Paint strippers are often used to remove old paint so that new paint can be applied. But so far, most of the paint strippers on the market use chlorinated substances that are highly volatile and harmful to the ozone layer to strip the paint. Although the effect is good, it is very harmful to the operator and the environment. There are also some paint removers that use strong acids or alkalis, such as NaOH, concentrated sulfuric acid, ammonia water, etc., which are very harmful to the substrate, operators and the environment. Or there are also some paint removers with better environmental compatibility, but they need cooking and heating, etc., which increases th...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the disadvantages of high toxicity of paint strippers in the prior art and the need for heating during use, the present invention provides an oil-in-water emulsion paint stripper, which has low toxicity, can be used at room temperature, does not damage the substrate and does not affect the secondary Advantages of painting