Crosslinkers / Curing Agents / Hardeners for Plastic Compounds

Casilane HP-669 by Thomas Swan is a sulphur silane coupling agent. It acts as a chemical intermediate and crosslinking agent. It also acts as a vulcanizing agent and activator in the rubber industry due to the presence of four sulphur atoms in its structure.

• It enhances performance by incorporating fillers like silica, fiberglass, talc, mica, and clay, boosting filler–rubber interaction to increase abrasion resistance and overall durability.
• It is suitable for use in NR, IR, SBR, BR, NBR, and EPDM rubber compounds.
• It features poly-sulphidic alkyl structures that align with sulphur deoxidation rates, resisting oxidative degradation while improving heat resistance and crack fatigue performance.
• It reduces puncture risk, rolling resistance, fuel consumption, and carbon-dioxide emissions, supporting carbon reduction efforts and ensuring environmental compliance.
• It acts as a reinforcing agent, enhancing filler performance and significantly improving rubber’s abrasion resistance.
• Casilane HP-669 boosts cut and pressure resistance while reducing hysteresis loss and moisture absorption, thereby enhancing mechanical strength, adhesion, thermal aging resistance, modulus, and flex life.
• It strengthens the bond between substrates and adhesives or coatings, resulting in products that are more durable, reliable, and long-lasting.
• It enhances mechanical properties like tensile strength, modulus, and elongation, making materials tougher, more flexible, and resilient.
• It improves chemical resistance, increasing stability, consistency, and product lifespan.
• It is used in the manufacturing of tires, hoses, rollers, belts, cables, footwear, and molded rubber parts.
• Recommended dosage is 1.0-4.0 PHR.
• It has a shelf life of over 2 years.

MXDA (M-XYLENEDIAMINE) distributed by DKSH is a curing agent which provides excellent curing at low temperatures. It is used as a modifier for MX-Nylon. It provides excellent chemical resistance and epoxy resins will cure fast at low temperatures, allowing a longer outdoor working season.

• It is the raw material of polyurethane resin, functional epoxy resin and also used in synthesis of rubber anti-aging agent, barrier nylon, isocyanate, etc.
• The shelf life of MXDA (M-XYLENEDIAMINE) is 12 months from date of production.
• It is available in Austria, Belgium, Bulgaria, Denmark, Estonia, Finland, France, Germany, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom, China and India.

SILMALINK AR1028 by Silma acts as a coupling agent in thermoplastic HFFR and a crosslinking agent in silane crosslinkable XL-HFFR compounds based on LLDPE/POE/EVA/EBA filled with ATH & MDH. It is a liquid mixture of functional silanes, radical initiator and additives (anti-scorching, processing aid).

• For Sioplas XL-HFFR compounds, it is designed to perfectly work in combination with SILMASTAB AL2690, AL2691 & AL2692, the masterbatches of tin-based catalysts including stabilizers, metal deactivator, antioxidants and processing aids to reduce die-droll & melt-fracture.
• The recommended dosage level is 0.5-1.0% as coupling agent in highly hydrophobic & crack-resistant HFFR (Halogen-free flame retardant) thermoplastic compounds to produce big armored cables exposed to harsh environmental conditions.
• It offers low smoke emission, superior elongation and low moisture uptake of final compound.
• Moreover, 1.2-2.0% dosage is required as crosslinking agent for 2-steps silane crosslinkable XL-HFFR compounds.
• SILMALINK AR1028 has a shelf life of 1 year.

DOWSIL™ Z-6121 Silane by Dow is a multi-purpose adhesion promoter and curing agent. It is aminoethylaminopropyltrimethoxysilane, 50% active in n-butanol/methanol. It is effective over a wide range of concentrations and eliminates the oven cure normally required to develop optimum properties. It improves adhesion and salt-spray resistance of epoxy coatings and adhesion of alkyd finishes to glass. It is suitable for polyamide, polyimide, styrenic resin and urethane. The shelf life of DOWSIL™ Z-6121 Silane is 36 months.

Luna® -cure MACM HP distributed by DKSH is a high purity cycloaliphatic amine. It is a colorless to yellow liquid, free of suspended matter. It is mainly used for curing of low viscosity hardener of epoxy resins for low solvent or solvent-free formulations.

• It is suitable for composites, polyamides synthesis and encapsulating resins for electronics.
• Luna® -cure MACM HP is available in Europe and North America.

CROSSLINKER 08 distributed by DKSH is an aliphatic poly-isocyanate based crosslinker. Added between 2-10% to water-based polyurethane and acrylic resins improve the adhesion to the substrate and consequently the washing fastness both wet and dry.

• It can also be used in solvent-based system.
• CROSSLINKER 08 has a shelf life of 6 months.
• It is available in Europe.

SILMALINK AR1023 by Silma is a liquid mixture of vinyl silane and radical initiator. It is especially designed for use in Sioplas process to produce crosslinkable XLPE and XL-EPR compounds for cable and pipes applications.

• It can perfectly work in combination with SILMASTAB AL2690, AL2691 & AL2692, the masterbatches of tin-based catalysts including stabilizers, metal deactivator, antioxidants and processing aids to reduce die-droll and melt-fracture.
• The recommended dosage level is 1.0-1.5% depending on the reactivity of base polyolefin mixture (LDPE, LLDPE, POE, EPR etc.), and the expected curing conditions (ambient, sauna or water immersion).
• SILMALINK AR1023 has a shelf life of 1 year.

SILMALINK AR1020 by Silma is a liquid mixture of vinyl silane, radical initiator and tin catalyst. It is especially designed for use in Monosil process to produce crosslinkable XLPE and XL-EPR compounds for cable applications.

• It can perfectly work in combination with SILMASTAB AL2638, the polyolefin masterbatch of stabilizers, antioxidants and processing aids.
• SILMALINK AR1020 is particularly suitable for insulation compound applied on direct contact with conductors like red copper.
• The recommended dosage level is 0.9-1.2% depending on the thickness of insulation, on the reactivity of base LLDPE used into Monosil process, and the dosage of SILMASTAB AL2638 stabilizer masterbatch.
• It has a shelf life of 1 year.

SILMALINK AX2292 by Silma is a compatibilizer or/and crosslinker in many reactive applications to build a network copolymerization between organic CH groups and organic/inorganic OH groups in presence of accelerators like peroxide and sulfur. It is 50% of functional silane in thermoplastic granules form. It is used simply to mix with the compound pellets during compound/extrusion or injection molding. In the case of formulation with fillers like MDH, ATH and various number of silicates with the presence of OH groups, it can create a chemical bond with them during crosslinking process. It is suitable in various compounding processes like XLPE, crosslinked EVA and rubbers. It is used at a dosage from 0.5-3% it depends on the needs. SILMALINK AX2292 has a shelf life of 6 months.

SILMALINK AX2292P by Silma is a silane-based coupling- and crosslinking agent available in thermoplastic granules form. It is compatible with EVA, POE, LLDPE and EMA/EBA. It is used in flame retardant fillers (ATH, MDH and natural mineral fillers), in combination with maleated coupling agents at a lower dosage (1-2%). At a higher dosage (4%), it is used in halogen-free flame retardant (HFFR) compounds for cables as a crosslinking agent for XL-HFFR compounds based on POE+MDH and EVA+ATH. SILMALINK AX2292P has a shelf life of 6 months.