Overview
Acid and alkali resistant color masterbatch is a pre-dispersed pigment concentrate engineered for polymers exposed to corrosive chemicals. It combines high-performance pigments with a polymer carrier (e.g., PP, PE, or PVC) and additives to ensure stability under harsh conditions. Widely used in industries requiring durable coloration, it eliminates the need for post-processing painting. The product is tailored to resist degradation from acids, alkalis, and solvents, making it ideal for applications like chemical storage tanks and laboratory equipment. Its formulation ensures uniform color distribution and reduces processing challenges compared to raw pigments.
Physical and Chemical Properties
The masterbatch exhibits exceptional resistance to pH extremes (typically pH 1–14) and maintains colorfastness even after prolonged exposure. Its thermal stability allows processing at standard polymer melting temperatures without pigment degradation. The granules are free-flowing, ensuring easy handling during manufacturing. Key additives include UV stabilizers and anti-oxidants to enhance longevity. The pigment concentration ranges from 20% to 50%, depending on the desired color intensity. Compatibility with common plastics like polyethylene and polypropylene is a critical advantage.
Main Applications
Primary applications include automotive components (e.g., battery casings), industrial piping systems, and chemical packaging. In construction, it is used for corrosion-resistant panels and fixtures. The masterbatch also serves in medical devices where sterilization resistance is required. Manufacturers favor it for injection molding and extrusion processes due to its consistent dispersion properties. It reduces waste compared to liquid dyes and simplifies compliance with environmental regulations.
Safety and Storage
While non-hazardous in solid form, dust generated during handling may irritate respiratory systems. Use PPE (masks, gloves) and ensure adequate ventilation. Storage recommendations include airtight containers at temperatures below 30°C to prevent moisture absorption. In case of fire, use CO₂ or dry chemical extinguishers. Spills should be contained and cleaned with inert absorbents. Always refer to the supplier’s Safety Data Sheet (SDS) for specific guidelines.
B2B Procurement Guide
Buyers should prioritize suppliers with ISO certification and batch-specific test reports. Key evaluation criteria include color consistency (measured by Delta-E values), chemical resistance certifications (e.g., ASTM D543), and compatibility with your base resin. Bulk orders (500+ kg) typically offer cost savings. Request samples for trial runs to assess processing behavior and final product performance. Negotiate lead times and MOQs, especially for custom colors.
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