High-grade plastic colorants are the most ideal colorants for various plastics, offering advantages such as strong tinting strength, excellent heat resistance, high lightfastness, good 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, and acetate fibers.

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 color tones.

Dye Application

When dissolved in a plastic melt, 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-plasticization or molding. The color intensity can be adjusted as needed. In transparent and clean resins, the dyes produce bright and transparent tones. When used with an appropriate amount of titanium white powder and other dyes, semi-transparent or opaque tones can be achieved. The dosage can be determined based on requirements, with typical usage being 0.02%-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