Engineering plastics are a class of high-performance polymers that offer exceptional mechanical, thermal, and chemical properties. They find extensive use in industries where durability, Balanced mechanical properties and precision are essential to meet specialized applications, such as automotive, aerospace, electronics, and medical devices.

Coloration of engineering plastics is a crucial aspect that goes beyond aesthetics, influencing product identification, branding, and functional characteristics. the coloration of engineering plastics is a multifaceted process that involves balancing aesthetic, functional, and economic considerations. Engineering plastics are used in a wide range of applications, from automotive components to consumer electronics, and the coloration plays a key role in enhancing the overall aesthetic appeal.

  • Achieving consistent colour across batches can be challenging, due to the base colour of the engineering plastic itself affects the final appearance.
  • Material Compatibility, is a crucial part as some colorants may affect the mechanical or thermal properties of the engineering plastic. It’s essential to choose coloration solutions that do not compromise the material’s performance.
  • Processing Conditions of Engineering plastics are often processed at higher temperature and pressure conditions and calls for proper selection on colourants
  • Cost Considerations for High-performance colorants or intricate colour matching processes may increase production costs. Balancing the desired colour with cost-effectiveness is a crucial consideration.

KONSPEC offers Ranges of masterbatches tailored for engineering plastics that play a crucial role in enhancing the performance and appearance of these materials in specialized applications to meet precise colour matches ensuring visual appeal meeting and also ensuring these engineering plastic masterbatches withstand the processing temperature, stability and compatibility needs of wide spectrum of engineering Polymers

Engineering Plastics masterbatches are available in PS, SAN, HIPS, ABS, MABS, PC, PET, PBT, NYLON, PMMA etc

KONSPEC offers COLOSOL Range of colour masterbatches are offered offering an efficient, cost-effective, and versatile solution for colouring of Engineering plastics while also enabling customization and enhancement of plastic products with specific functional properties.

Salient Features

  • High Pigment Concentration enabling masterbatch at low addition rates. This is essential for maintaining the mechanical properties.
  • Compatible Base Resin Ensuring optimal colour mixing and Mechanical properties are Maintained
  • Excellent Dispersion ensuring uniform colour distribution throughout the plastic product.
  • Higher Thermal Stability: Engineered to withstand high processing temperatures without degrading, which is particularly important for engineering plastics that are processed at higher temperatures than commodity plastics.
  • Chemical Compatibility: The carrier resin and additives in the masterbatch are chosen to be compatible with specific types of engineering plastics, ensuring that the addition of the masterbatch does not adversely affect the base material’s properties.
  • Customizability: They can be custom-formulated to match precise colour specifications and to
  • Regulatory Compliant Grades:  Range of Masterbatches to meet Specific requirements like Food Compliance, ROHS WEEE, EN 71-3 etc


Additive masterbatches are critical components in the manufacturing of engineering plastics, offering a way to incorporate specific performance-enhancing features into these materials. The use of additive masterbatches allows for precise control over the properties of the final plastic product, tailored to meet the demanding requirements of engineering applications.

UV Stabilizers: These additives protect the plastic from degradation due to exposure to ultraviolet light, extending the life of products used outdoors or in environments where UV exposure is significant, such as automotive exterior parts and outdoor electrical components.

Antioxidants: Antioxidant additives are used to prevent oxidation of the plastic, which can lead to discoloration, loss of mechanical strength, and other forms of degradation.

Flame Retardants: For applications requiring high levels of fire safety, such as electrical and electronic components, household appliances, and automotive parts, flame retardant additives can be incorporated to reduce flammability and to comply with fire safety standards.

Antistatic Agents: These additives reduce the buildup of static electricity on the surface of plastics, important for electronic packaging,

Impact Modifiers: Impact modifiers improve the toughness of engineering plastics, making them more resistant to cracking or breaking under impact.

Optical Brighteners: Used to enhance the appearance of plastics, making them appear brighter or counteracting yellowing, suitable for consumer electronics, toys, and other applications

Chain Extenders: For recycled or degraded polymers, chain extenders can restore molecular weight, improving the mechanical properties and processability of the material. This is increasingly important in applications where recycled content is used.


Productivity enhancement masterbatches for engineering plastics are specialized formulations designed to improve the manufacturing efficiency and performance of plastics during the processing phase.

Processing Aids: These masterbatches are formulated to improve the melt flow characteristics of engineering plastics, making them easier to process, this can lead to faster cycle times, lower processing temperatures, and reduced energy consumption.

Mold Release Agents: these additives facilitate the demoulding process, reducing cycle times and minimizing the risk of product defects.

Nucleating Agents: For semi-crystalline engineering plastics, nucleating agents promote faster and more uniform crystallization. This can enhance the mechanical properties of the final product, reduce cycle times, and improve dimensional stability.

Purge Compounds: purge compounds are used during transitions between materials or colours in processing equipment. They are designed to clean the machinery efficiently, reducing downtime and material waste.

Applications Area

  • Automotive,
  • Sanitary ware,
  • Consumers Durables,
  • Electronics and Electrical equipment’s,
  • Textile bobbin,
  • Water Bottles and
  • other Engineering Applications

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