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TAIC (Triallyl Isocyanurate): A Reliable Crosslinking Co-Agent for Rubbers & Polymers

TAIC (Triallyl Isocyanurate): A Reliable Crosslinking Co-Agent for Rubbers & Polymers

Triallyl Isocyanurate (TAIC), CAS No. 1025-15-6, is a trifunctional monomer widely used in the rubber and polymer industry as a crosslinking co-agent. Its molecular structure contains three allyl groups attached to a stable triazine ring. This structure enables TAIC to participate in crosslinking reactions, especially in systems that use organic peroxides for curing.

Because of this, TAIC is commonly selected to modify or enhance the crosslinking process in synthetic rubbers, plastics, thermoplastics, and specialty polymer systems.

How TAIC Works in Crosslinking

In peroxide-curing systems, the peroxide generates free radicals. These radicals can react with the allyl groups present in TAIC. As a result, TAIC becomes part of the polymer network and contributes to forming a more uniform crosslinked structure.

This function makes TAIC a practical and widely used co-agent in various rubber and plastic applications.

Industries and Materials Where TAIC Is Commonly Used

1. Synthetic & Specialty Rubbers

TAIC is used as a co-vulcanizing agent with peroxide-cured elastomers. It is compatible with various rubbers including:

  • EPDM / EPM (Ethylene Propylene Rubbers)

  • CPE (Chlorinated Polyethylene)

  • FKM / Fluoroelastomers

  • HNBR (Hydrogenated Nitrile Rubber)

  • Other peroxide-curable elastomers

In these systems, TAIC is added to support efficient crosslinking and help achieve stable cured networks.

2. Thermoplastics & Polymers

TAIC is used in crosslinking and modification of several plastics, such as:

  • Polyethylene (PE)

  • EVA (Ethylene-Vinyl Acetate)

  • PVC (Polyvinyl Chloride)

  • Polystyrene and other polyolefins

It is used both in peroxide-initiated processes and radiation-induced crosslinking processes.

3. Specialty Resin Systems

TAIC also finds use in systems such as:

  • Unsaturated polyester resins

  • Epoxy resins

  • Ion-exchange resins

  • High-performance composites

In these materials, it acts as a reactive crosslinking monomer.

Typical Usage Levels (Industry-Standard Guidelines)

While exact formulation levels depend on the system and application, published industry ranges generally include:

  • Rubber compounds: approximately 0.5–4 phr (parts per hundred rubber)

  • Thermoplastics / polyolefins: typically 1–3% by weight in peroxide systems

  • Radiation crosslinking: often 0.5–2% by weight

These are general ranges reported by multiple suppliers. Actual usage will vary based on polymer type, curing system, fillers, and processing conditions.

Advantages Reported in Industry Literature

Industry sources commonly note that TAIC contributes to achieving:

  • Stable crosslink structures

  • Good compatibility with peroxide-curable polymers

  • Useful performance in both rubber and plastic modification

However, the degree of improvement depends entirely on the formulation and processing conditions. Therefore, performance outcomes should always be validated through testing under the intended manufacturing conditions.

Physical Forms

TAIC is commercially available in forms such as:

  • Liquid TAIC

  • Crystalline / solid TAIC

  • Bead or powder forms

Different forms allow flexibility for processing, handling, and incorporating into various compounding systems.

Why TAIC Fits Within Lab Line Enterprises’ Portfolio

Lab Line Enterprises supplies peroxide curing agents, specialty rubbers, silane coupling agents, and other additive systems for rubber and polymer processing. TAIC complements these product categories as a co-agent that integrates naturally into peroxide-based curing and polymer modification workflows.

Conclusion

TAIC is a well-established and widely used crosslinking co-agent for rubbers, plastics, thermoplastics, and resin systems. Its trifunctional allyl structure enables it to support the formation of crosslinked networks in peroxide-curing and radiation-curing applications.

With broad compatibility and clear functional role, TAIC continues to be a dependable choice for manufacturers working with peroxide-curable elastomers and crosslinkable polymer systems.