High-grade plastic colorants are the most ideal colorants for various plastics, offering advantages such as strong coloring power, excellent heat resistance, high lightfastness, acid and alkali resistance, and vibrant colors. They are widely used in the coloring of daily-use plastics, bobbin materials, industrial greases, paints, inks, and masterbatches. Some varieties are suitable for coloring and spinning of chemical fibers, polyester, nylon, acetate fibers, etc.

Application Range

High-grade plastic colorants fall into the category of oil-soluble dyes and can dissolve in organic solvents. They can be used individually or blended in various proportions to achieve desired shades.

Dye Application

When these dyes dissolve in molten plastic, they distribute in a molecular state. For coloring various plastics, a specific proportion can be directly added to the plastic and uniformly mixed before pre-plasticization or molding. The color concentration can be adjusted as needed. In transparent and clean resins, the dyes produce bright transparent shades. When combined with an appropriate amount of titanium white powder and other dyes, semi-transparent or opaque shades can be achieved. The dosage can be negotiated based on requirements, with typical usage being 0.02%-0.05% for transparent shades and around 0.1% for opaque shades.

Quality Indicators

Heat resistance reaches 240°C-300°C

Lightfastness grades are 6-7 and 7-8

Migration resistance grades are 3-4 and 4-5

Coloring strength is 100%±3%

Moisture content <1%

Fineness passes through a 60-mesh sieve