Ultramarine pigment is used for whitening, it can eliminate the yellow light in white paint or other white pigments. It is insoluble in water, alkali-resistant and high-temperature resistant. It is extremely stable to the sun and wind and rain in the atmosphere, but it is not resistant to acid. .
Several major classifications of ultramarine pigment products:
Red coloring agent: Lisol red-more dosage, bright hue, gloss, tinting strength and solvent resistance are better, but not resistant to sunlight; Redness-more dosage, light resistance, resistance Hot, but poor transparency; molybdenum chromium red, iron oxide red and phthalocyanine red-used for color matching, less used alone.
Yellow colorants: lemon yellow, light chrome yellow, medium chrome yellow and deep chrome yellow-yellow opaque pigments with chromic acid as the main component, can be used alone or used for color matching; fluorescent yellow (YJP-1)-with green Light yellow pigment, bright and bright, can be used alone or mixed colors. Blue colorants: Phthalocyanine Blue B, Phthalocyanine Blue BS-has good heat resistance, light resistance and solvent resistance, good dispersion, can be used as blue transparent plastic products, or can be notified of color mixing; Ultramarine——Sulfur-containing sodium aluminosilicate, resistant to high temperature and light, but not acid-resistant, commonly used in the production of PET bottles and caps;
Green colorant: Phthalocyanine green has a large application amount, and can be used as a transparent plastic product alone or in color matching. It has good heat resistance, light resistance and solvent resistance, and has good dispersion.
Violet colorant: Everlasting Violet RL-a blue pigment with less mobility and good heat and light resistance.
Ultramarine pigments have always produced low-end ultramarine pigments in China, and the quality is also unstable. Ultramarine used in plastics has always relied on imports, breaking the bottleneck of ultramarine pigments used in plastics in China.
