Product Description: Name: CUROX ? M-200 Chemical: Methyl ethyl ketone peroxide Appearance: Colorless liquid Reactive oxygen content: Minimum 9.0% w/w Sensitizer: Phthalate Plastic Additives Density (20°C): Approx. 1.148 g/cm3 Viscosity (20°C): Approx. 23 mPa.s Solubility: Insoluble in water, but soluble in phthalates. APPLICATIONS: Primary use: as a curing agent (free radical source) for unsaturated polyester and vinyl ester resins. Types of resins for which the curing agent is suitable: Unsaturated polyester resins, particularly suitable for phthalic and isophthalic acid resins. Conventional dosage:

Description: CUROX? M-202 is a colorless liquid consisting of a mixture of peroxides based on methyl ethyl ketone peroxides using desensitized aliphatic esters. This methyl ethyl ketone peroxide is mainly used as an initiator (free radical source) in the curing of unsaturated polyester resins. The main application is the curing of molded parts at room temperature with cobalt accelerators. Technical Data: Appearance: Colorless liquid Active oxygen: approx. 9.11 TP6T (% by mass) Desensitizer: Aliphatic ester Density (20°C): approx. 1.01 g/cm3 Viscosity (20°C): approx. 16 mPa-s Not miscible with water but can be mixed with esters, unsaturated polyester resins.

Description: CUROX? M-300 is a colorless liquid consisting of a mixture of peroxides based on methyl ethyl ketone peroxides desensitized with phthalate plasticizers. This methyl ethyl ketone peroxide is mainly used as an initiator (free radical source) in the curing of unsaturated polyester and vinyl ester resins. Technical Data: Appearance: Colorless liquid Active oxygen: not less than 9.81 TP6T (mass %) Desensitizer: Phthalate plasticizer Density (20°C): approx. 1.148 g/cm3 Viscosity (20°C): approx. 23 mPa-s Not miscible with water, but soluble in phthalates Criticality

Description: CUROX? M-303 is a colorless liquid consisting of a mixture of peroxides based on methyl ethyl ketone peroxides desensitized mainly by phthalate plasticizers. The peroxide is used as initiator (free radical source) in the curing of unsaturated polyester resins. Main application areas: Room temperature curing of gelatin layers, molded, cast or glass fiber reinforced products, in combination with cobalt accelerators. Technical Data: Appearance: Colourless liquid Active oxygen: approx. 9.1% (% by mass) Free hydrogen peroxide content: approx. 1.7% (% by mass) Moisture content: approx. 1.5% (% by mass) Desensitizing agent: o-o

Description: CUROX? M-312 is a colorless liquid consisting of a mixture of peroxides based on methyl ethyl ketone peroxides desensitized mainly by fatty acid esters. The peroxide is used as a free radical initiator for the curing of unsaturated polyester resins in combination with cobalt accelerators at room temperature. Suitable for curing molded parts at room temperature in combination with cobalt accelerators. Particularly suitable for special pre-accelerated and stabilized resin types. Technical Data: Appearance: Colorless liquid Desensitizer: Fatty Acid Ester Active Oxygen (AO): approx. 8.6 - 9.21 TP3T (% by mass) Hydrogen Peroxide Content: approx. 2.61 TP3T (% by mass) Density

Description: CUROX? M-312R is a red liquid consisting of a mixture of peroxides based on methyl ethyl ketone peroxides desensitized mainly by fatty acid esters. The peroxide is used as a free radical initiator for unsaturated polyester resins cured at room temperature in combination with cobalt accelerators. It is suitable for curing molded parts at room temperature in combination with cobalt accelerators. The red peroxide allows for controlled homogenization in the resin and the red color disappears after curing. Suitable for special pre-accelerated and stabilized resin types. Technical Data: Appearance: Colorless Liquid Desensitizer: Fatty Acid Ester Active Oxygen (AO): min. 7.7 - 9.2% (

Product Description: CUROX? M-370 is a colorless to slightly yellowish liquid mixture consisting of methyl ethyl ketone peroxide and acetyl acetone peroxide mixed through dimethyl phthalate. The main application is the curing of unsaturated polyester resins with cobalt accelerators at 20 - 40 °C for molded polyester parts at ambient temperatures. Technical Data: Appearance: Clear liquid with a slight yellow color. Inhibitor: Dimethyl phthalate. Active Oxygen (AO): min. 7.71 TP3T w/w. Density (20°C): approx. 1.13 g/cm3. Viscosity (20°C): approx. 28 mPa-s. Flash Point: &

Product Description: CUROX? M-402 is a clear liquid mixture based on methyl ethyl ketone peroxide used primarily as a curing agent for unsaturated polyester resins. It is modified to minimize sensitivity and is mainly used for casting buttons or button tabs at room temperature in combination with small amounts of cobalt accelerators. Technical data: Appearance: colorless liquid Reactive oxygen content: approx. 9.91 TP6T (mass fraction) Desensitizer: aliphatic ester Density (20°C): approx. 1.04 g/cm3 Viscosity (20°C): approx. 21 mPa-s Solubility: insoluble in water, mixed with esters, UP/VE resins Critical temperature (SADT): approx. 60°C Cold storage stability

Product Description: CUROX? M-402R is a red flowable liquid consisting of a peroxide based on methyl ethyl ketone, which is desensitized by means of an aliphatic ester. It is used as a curing agent for unsaturated polyester resins and its red color helps to ensure optimum homogenization in the resin mixture. Technical Data: Appearance: Red Liquid Reactive Oxygen Content: approx. 9.91 TP6T w/w Desensitizer: Aliphatic Ester Density at 20°C: approx. 1.04 g/cm3 Viscosity at 20°C: approx. 22 mPa-s Refractive Index at 20°C: 1.434 Solubility: Insoluble in water, soluble in esters, UP/VE resins Critical Temperature (SAD)