Paint auxiliary agent

Abstract

The invention relates to a paint auxiliary agent, in particular to a paint auxiliary agent with good anti-crusting performance. The paint auxiliary agent is prepared from the following ingredients inparts by mass: 20 to 30 parts of butyraldoxime, 30 to 40 parts of cyclohexanone oxime, 15 to 19 parts of linseed oil, 5 to 10 parts of castor oil and 80 to 120 parts of solvents. The paint auxiliary agent can prevent the oxidization and polymerization film forming of the paint; the anti-crusting performance is realized through delaying the gel formation; the paint auxiliary agent can form complexes with a metal part of a drying accelerator, so that the paint loses the drying accelerating performance to delay the crusting. The paint auxiliary agent has the advantages that the price is low; theoxidization performance is proper; the paint auxiliary agent has good mixing performance with various kinds of paint.

Description

technical field [0001] The invention relates to a coating additive, in particular to a coating additive with good anti-skinning performance. Background technique [0002] The skinning of air-drying coatings during use and storage is firstly manifested by the volatilization of solvents, and then the surface is oxidized and polymerized to gel. The early gel can be restored to the original fluid state by stirring, and as time goes on, the gel gradually hardens, and can be removed by filtration. If the film is hard enough, it can be directly cut and removed. Eventually, the film thickens so that it all gels into a solid state. [0003] There are three reasons for the formation of crusts: [0004] (1) The surface of the paint is in contact with the air, and second, the surface of the paint is oxidized and polymerized. [0005] (2) The gelation is promoted due to the volatilization of the solvent. [0006] (3) The colloidal balance of the binder is destroyed due to the above ...

AI Technical Summary

Problems solved by technology

[0005] (2) Promote gelation due to solvent volatilization

[0006] (3) The colloidal balance of the binder is destroyed due to the above two factors

[0007] In the production process of paint, measures to isolate air such as solvent covering are often used to delay skinning, but the effect is not obvious