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Saret® and crosslinking coagents

Product range
Saret crosslinking coagents

Sartomer offers a number of liquid acrylic coagents with varying functionalities for use in peroxide curing of elastomers. Peroxide curing of elastomers is an alternative to sulfur vulcanization that offers superior heat-aged performance. Curing with peroxide alone, however, is inferior to sulfur vulcanization in areas such as wear resistance and dynamic properties.

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Name Description Chemistry Functionality Application Performance
Name Chemistry Functionality Application Performance
Crosslinking Coagent Monomer 3
  • Adhesives and sealants
  • Hardness
  • Scratch resistance
  • Scorch safety

Key benefits

The addition of crosslinking coagents with the peroxide overcomes these deficiencies, while maintaining the improvement in heat-aged performance. With appropriate coagent selection, improvements in final properties can be realized, including:

  • Scorch protection
  • Low compression set
  • Temperature stability
  • High elongation
  • High modulus
  • Wide hardness range
  • Modulus/compression set
  • Low mooney viscosity
  • High tensile strength
  • Good hot tear strength

Saret® coagents are available as proprietary mixtures with radical-scavenging retarders that provide prolonged scorch safety, while maintaining cure rate and increasing crosslink density. These products are compatible with a variety of elastomers, including EPDM, NBR, CPE, PE, etc.


Product codeChemical nameFunctionalityProduct description
Saret SR519 HP High Performance Trifunctional Coagent Trifunctional Saret SR519HP coagent is a trifunctional, low color, low odor, low staining, scorch retarding coagent that contains non-nitroso inhibitor packages.  When incorporated into peroxide cure natural and synthetic rubber systems, the product improves mechanical and performance properties.
SR297 F NS 1,3-Butylene Glycol Dimethacrylate Difunctional SR297 F NS, 1,3-butylene glycol dimethacrylate, is a difunctional monomer offering good stain resistance and solvency.
SR517 NS Crosslinking Agent (Trifunctional) Trifunctional SR517 NS coagent is a trifunctional, low color,low staining, scorch retarding aid which contains non-nitroso inhibitor packages. When incorporated into peroxide cure natural and synthetic rubber systems, the product improves mechanical and performance properties.

Geographic availability



  • Automotive and transportation
    • Elastomers
  • Chemical and plastics industry
    • Rubber manufacturing


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