Category overview

Chain Extenders

Based on 176 products - Last update on the Jun 26, 2025

Chain extenders are used to increase the molecular weight of polymers by linking shorter polymer chains together. These agents, often composed of reactive polymers like carbodiimides or epoxy-based compounds. They work by forming chemical bonds with the polymer matrix, thereby enhancing the material's mechanical properties and processability. Key features include their ability to improve melt strength, durability, and resistance to thermal degradation. Chain extenders are used in biodegradable plastics, packaging, and automotive parts.

Alternatives to chain extenders include plasticizers and stabilizers. Sub-types include monomeric and polymeric variants.

Applications

Automotive11 products

Electronics / Computers7 products

Wiring & Cables5 products

Claims / benefits

Crosslinking/ Hardening, ...32 products

Curing & Polymerisation C...10 products

Formulation Cost, Low9 products

Properties

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CESA™ Fiber Additives

by Avient (Formerly PolyOne)

CESA™ Fiber Additives by Avient (Formerly PolyOne) include UV stabilizers, flame retardants, optical brighteners, antimicrobials, antioxidants, anti-static, heat preservation additives, and chain extenders for synthetic fibers. Stain-resistant additive concentrates are the latest addition to its portfolio. They are designed for spun-dyed polyester, polypropylene and polyamide. They provide excellent spinnability and can be combined with colors into a single masterbatch for convenience.<br> <ul style="padding-left: 40px;"><li>Anti-stain concentrates are formulated without fluorine-based raw materials and can prevent soils from setting in polyester fibers, enabling easy stain removal with common cleaners like wipes, sprays, or steamers.</li> <li>Antimicrobial additive concentrates (organic or inorganic) help protect textiles from stains and odors caused by microbial growth and are used in apparel, sportswear, household furnishings and carpets.</li> <li>Chain extenders provide smoother and more stable processing of recycled PET into fibers, which are used in clothing, automotive textiles and home textiles. <li>Fiber-specific flame-retardant systems are used in automotive textiles, home and office furnishings, clothing and carpeting.</li> <li>Heat preservation additives are suitable for clothing, home textiles and technical fabrics.</li> <li>Light stabilizer systems are recommended for carpeting, upholstery, automotive textiles, artificial turf, sun protection textiles, tents, sun loungers and garden furniture textiles.</li> <li>CESA™ Fiber Additives also consist of concentrates that impart immediate soft touch effect to PP, PES, PA and PLA fibers resist regular washing and are suitable for hygiene articles, clothing, home textiles and carpets.</li> <li>Hydrophobic additive concentrates offer fast and durable water repellency and IPA repellency grade 6 to PP nonwovens, which are used in roofing underlay, cable wrapping, geotextiles, surgical gowns and drapes, sterile tray wraps, hospital bed sheets, curtains and various filtration applications.</li></ul>

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REGRANYL 90

by Greenchemicals

REGRANYL 90 by Greenchemicals acts as a regrind and re-polymerization agent, through the extrusion process of polyamides. It also acts as a chain extender.<br> <ul style="padding-left: 40px;"> <li> Offers homogeneous rheological behavior without pulsation.</li> <li> It has its effect on both virgin and recycled polyamide.</li> <li> It increases the mechanical properties of virgin polyamide.</li> <li> When 0.5% of REGRANYL 90 is added, it shows increased viscosity of PA6 and PA66 whereas the viscosity variation is much higher in PA12.</li></ul>

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REGRATEX MB-D

by Greenchemicals

REGRATEX MB-D by Greenchemicals is an intrinsic viscosity enhancer, chain extender, regrader and re-polymerizating agent, through the extrusion process. It also acts as a processing aid.<br> <ul style="padding-left: 40px;"><li> It increases the viscosity of polymers, improves the mechanical properties and increases the pressure on the extruder die when compounded into polyesters.</li> <li> It is suitable for PET transparent such as bottles, films, sheets and straps.</li> <li> Recommended dosage level of REGRATEX MB-D is 0.1 to 1%.</li></ul>

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BRUGGOLEN® M1251

by Brüggemann

BRUGGOLEN® M1251 by Brüggemann is a highly reactive chain extender based on modified polyamide. It provides increased melt viscosity, improved impact strength and increased elongation at break in glass reinforced polyamides. It offers regeneration and transformation of polyamide fiber waste to higher quality extrusion grades, applicable for common technical parts at much lower price levels. It possess no influence on the homogeneity of the polyamide melt and no formation of gel structures. It is suitable for processing by injection molding and compounding on twin screw extrusion machines. The dosage level of the grade is 0.5-2.0%, depending on the basic polyamide and the desired properties of the finished parts. The shelf life of BRUGGOLEN® M1251 is 12 months under (sealed, dry, 25°C) conditions.

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Greenchemicals

217 Products

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Brüggemann

85 Products

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DKSH

450 Products

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