Product information
Cobalt Accelerator SR-531
Alpha ChemieCobalt accelerator for polyester resin systems, designed to promote and control the curing reaction of unsaturated polyester resins when used with an appropriate peroxide initiator such as MEKP.
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Cobalt Accelerator SR-531 is a curing accelerator used with unsaturated polyester resin systems to promote faster and more controlled curing when combined with a suitable organic peroxide initiator. It is primarily intended for FRP and polyester-based applications where reliable gelation and curing performance are required. The accelerator helps polyester resin systems achieve practical curing times during manufacturing and fabrication. It can be used in applications such as fiberglass composites, FRP components, molded products, laminates, and other polyester-based composite systems. The exact dosage and operating conditions should be established according to the polyester resin manufacturer's recommendations and the technical data supplied for the accelerator, peroxide and resin system.
Applications
FRP manufacturing; fiberglass composites; unsaturated polyester resin systems; hand lay-up; lamination; molded FRP components; fiberglass tanks and pipes; automotive and industrial FRP parts; panels and sheets; sanitary products; marine FRP components; general composite fabrication.
Key features
Promotes curing of unsaturated polyester resin systems Used in combination with peroxide initiators such as MEKP Helps achieve controlled resin gelation and cure Suitable for FRP and fiberglass composite manufacturing Useful for hand lay-up and other polyester processing methods Supports improved production efficiency through controlled curing
Recommended use
Recommended for unsaturated polyester and vinyl ester resin systems where a cobalt-based accelerator is required. Use according to the resin manufacturer's recommended accelerator and peroxide levels. Conduct a trial to establish the optimum dosage, gel time and cure characteristics for each resin formulation and production process.
Not recommended for
Not recommended for direct use with epoxy, polyurethane or other resin systems unless specifically formulated for such use. Do not mix cobalt accelerator directly with organic peroxide/MEKP; follow the resin and peroxide supplier's prescribed mixing procedure
Handling and safety
Handle with appropriate PPE and work in a well-ventilated area. Keep the accelerator away from heat, ignition sources and incompatible chemicals. Never mix cobalt accelerator directly with MEKP or other peroxide initiators, as dangerous reactions can occur. Add and mix components only according to the approved resin-system procedure and supplier instructions. Store in a tightly closed, suitable container under recommended storage conditions.