Some organic pigments reason analysis

More simply refers to the diffusion capacity of the toner , i.e., the ability of its original color intensity of a pigment is mixed with a reference color after another presentation . Other colors are usually white benchmarks to measure their color tinting strength . Coloring power is one of the main properties of the pigment.
Tinting strength pigment strength
The main absorption and reflection of light is determined by the degree of the toner itself , the greater the absorption capacity, the stronger coloring power .
The particle size of the toner dispersion and coloring power of the pigment is related.
In the same color , the color strength of organic pigments are generally stronger than inorganic pigments such as Ching Lin , rose red , crimson , and scarlet , etc. Some colors are too strong tinting strength strong bleeding , poor stability fatal shortcomings.
When multi- color painting as an underlying cause pan- color , it is difficult to be completely covered, so it is best to avoid using these colors, a last resort should be carefully controlled , with the deployment of such a color composite color should be added in small amounts reconcile uniform, and then gradually increase the dosage.
Edit this paragraph light force
Li also called Fast light or light resistance force , to maintain the original color of the pigment is the tolerance in the sunlight in the ultraviolet irradiation , in general inorganic pigments will darken gray hair under the action of  PVC plasticizer light, then fades organic pigments fade , but the total force up to see the light , the superior general of inorganic pigments organic pigments.
Light force is an important indicator of the quality of the pigment identification
Test light force
There are special xenon light tester can simulate sunlight exposure can greatly reduce test time .
Light power level
By light fastness standards are divided into 1-8 .
In general , most organic pigments are not light , the mineral pigment is  Polyethylene wax light , such as the deep red Sin will gradually fade in the light, and yellowish brown , red soil and quality ultramarine was enduring.
In addition , between the pigment must be compatible with each other , and some will be changed because of a chemical reaction after the pigment hue reconcile ; There will penetrate the other colors on the color cover , causing trouble.
Oil paint raw materials used in the production of color lakes rose, violet and pink are all very poor light pigment force should be avoided .
Other categories except red cadmium red and vermilion , we will also have a noticeable fading phenomena such as adding white to dilute .
In addition, the role of the oil , too much oil can cause yellowing of darker hue , these are one pack stabilizer  what we should try to avoid.