Trigonox K-80 overview

Trigonox K-80 is cumyl hydroperoxide (CHP, CAS 80-15-9) at 80–85 % in an aromatic solvent mixture, supplied as a clear liquid by Nouryon. It is a polymerization initiator for the (co)polymerization of styrene, butadiene, acrylonitrile and (meth)acrylates in emulsion, solution and bulk processes, and it is also used as a curing agent for unsaturated polyester resins.

Without accelerators, Trigonox K-80 gives effective polymerization between 50 °C and 200 °C; styrene and methyl methacrylate can be bulk-polymerized at 60–100 °C. In emulsion processes it can be activated with reducing agents or metal compounds to work at room temperature or below. For reproducible low-temperature redox emulsion polymerization, the higher-concentration Trigonox K-90 is the usual choice. See all grades in the organic peroxide range.

Trigonox K-80 key data

Trigonox K-80 TDS & SDS download

The Trigonox K-80 product data sheet (TDS/PDS) lists specifications, half-life data and storage limits. Two safety data sheets (SDS) are available: one for IBC packaging and one for packs under 200 kg. All English documents can be downloaded below. Data sheets for acrylics production and thermoset composites, and Chinese versions, are available on request.

Applications

-Polystyrene and styrene copolymers: emulsion, solution and bulk (co)polymerization of styrene, butadiene and acrylonitrile.

-Acrylics: initiator for (co)polymerization of acrylates and methacrylates; bulk polymerization of methyl methacrylate at 60–100 °C.

-Redox emulsion polymerization: activation with reducing agents or metal compounds for polymerization at room temperature or below.

-Thermoset composites: curing agent for unsaturated polyester resins, including continuous laminating.

Storage and handling

Store Trigonox K-80 between −25 °C and 40 °C in tightly closed original containers, in a dry, well-ventilated area away from heat, ignition sources and direct sunlight. The lower limit prevents crystallization. Keep it away from reducing agents such as amines, acids, alkalis and heavy metal compounds. The SADT depends on the container: 75 °C in small cans, 70 °C in IBCs and 65 °C in bulk tanks.

Trigonox K-80 FAQ

Q:What is Trigonox K-80?

A:Trigonox K-80 is Nouryon's cumyl hydroperoxide (CHP), CAS 80-15-9, at 80–85 % in an aromatic solvent mixture. It initiates the polymerization of styrene, butadiene, acrylonitrile and (meth)acrylates and cures unsaturated polyester resins.

Q: What is the difference between Trigonox K-80 and Trigonox K-90?

A: Both are cumyl hydroperoxide. Trigonox K-80 contains 80–85 % and Trigonox K-90 about 90 %. Trigonox K-90 is the usual choice for reproducible low-temperature redox emulsion polymerization.

Q: What is the active oxygen content of Trigonox K-80?

A: The specification is 8.40–8.94 % active oxygen. The figure of 10.51 % is the theoretical value of pure cumyl hydroperoxide.

Q: At what temperature is Trigonox K-80 used?

A: Without accelerators it polymerizes effectively between 50 °C and 200 °C, and styrene or methyl methacrylate can be bulk-polymerized at 60–100 °C. With reducing agents or metal compounds it works at room temperature or below.

Q: How should Trigonox K-80 be stored?

A: Store it between −25 °C and 40 °C in closed original containers, away from heat, ignition sources, reducing agents, acids, alkalis and heavy metal compounds. Under these conditions it stays within specification for at least 6 months after delivery.

Q:Where can I get the Trigonox K-80 TDS and SDS?

A:The English product data sheet and two safety data sheets, for IBC and for packs under 200 kg, can be downloaded on this page. Send an inquiry for application-specific data sheets or Chinese versions.