Application of solvent-based oily color paste and color mixing method of paint color paste
Solvent-based oily general-purpose color paste generally choose synthetic resins as the carrier, such as aldehydes and ketones, acrylic resins and so on. There are also some resin-free or similar plasticizer system.
Selection of general-purpose color paste attention to the following points:
1, whether adding a certain concentration has an effect on the gloss.
2, whether there is an effect on compatibility, such as pigment flocculation, solvent insoluble. Whether the solvent in the paint has side effects on the resin of universal color paste. For example, aldehydes and ketones resin is not very good due to alcohol resistance.
3、Is there any effect on viscosity. Some of the viscosity requirements of higher varieties. For example, nitro lacquer. Whether the viscosity has a significant impact.
4, temperature resistance is achieved, or whether the yellowing resistance is reliable.
5, aldehydes and ketones resin is not very good due to aldehyde resistance, generally not recommended for alcohol tolerance test coatings, such as some special wood paint, plastic paint and so on.
6, aldehydes and ketones resin temperature resistance is poor also makes its application has been partially restricted, such as some baking paint (drying temperature > 150 degrees) should be tested for solvent-borne coatings on the film-forming properties and yellowing resistance of the impact of performance.
Solvent-borne coatings are more often used in the original color paint-based, color paste as a supplement to the color mixing method, why?
1, solvent-borne coatings using a variety of environmentally friendly resins and solvents is very much, the cost pressure is also greater, and the requirements of gloss and other requirements than the sex of the coating requirements are much higher, so the general solvent-borne coatings coloring mainly using the original color paint-based, add some general-purpose color paste coloring.
2, solvent-based architectural coatings are generally acrylic resin as a film-forming material, the selection of a large number of fillers and part of the titanium dioxide to do the aggregate, the color is also more light-based, which is a more special category.
Translated with www.DeepL.com/Translator (free version)
