High-grade plastic colorants are the most ideal colorants for various plastics, offering advantages such as strong tinting strength, excellent heat resistance, high lightfastness, resistance to acids and alkalis, 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 under 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 dissolved in molten plastic, these dyes distribute in a molecular state. For coloring various plastics, a specific proportion can be directly added to the plastic and uniformly mixed before pre-molding or molding. The color intensity can be adjusted as needed. In transparent and clean resins, the dyes produce bright and transparent tones. When combined with an appropriate amount of titanium white powder and other dyes, semi-transparent or opaque tones can be achieved. The dosage can be customized based on requirements, typically ranging from 0.02% to 0.05% for transparent tones and around 0.1% for opaque tones.

Quality Indicators

Heat resistance: 240°C–300°C

Lightfastness: Grade 6–7, Grade 7–8

Migration resistance: Grade 3–4, Grade 4–5

Tinting strength: 100% ± 3%

Moisture content: <1%

Fineness: Passes through a 60-mesh sieve