Product Description:

• CUROX? M-402R is a red flowable liquid consisting of a methyl ethyl ketone based peroxide that is desensitized by an aliphatic ester.
• It is used as a curing agent for unsaturated polyester resins, and its red color helps to ensure optimal homogenization in the resin mixture.

Technical data:

• Appearance: red liquid
• Active Oxygen Content: Approx. 9.9% 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 ester, UP/VE resin
• SADT: approx. 60°C
• Refrigeration stability: liquid to below -25°C
• Recommended storage temperature: below 30°C
• Activity maintenance time at 30°C from the date of delivery: 6 months

Applications:

• CUROX? M-402R is used as a curing agent for unsaturated polyester resins, usually with a cobalt-based catalyst at room temperature.
• Standard dosage levels: 1 - 31 TP3T of supply, 0.2 - 21 TP3T of 11 TP3T cobalt solution.
• Particularly suitable for cast buttons or centrifugally cast button tabs when small amounts of cobalt catalyst are used at room temperature.

Curing performance:

• Moderate heat release resulting in a low internal stress cure.
• Relatively long mold release time.
• Particularly suitable for processes with short gel times, even when small amounts of cobalt are used.

Processing methods:

• Developed for short gel times for processes such as cast buttons, centrifugally cast UP buttons or button sheets, and continuous impregnation of (corrugated) sheets.

Standard Packaging:

• CUROX? M-402R is available in standard package sizes including 5 kg and 22.5 kg polyethylene bottles.

The document emphasizes that the information provided is based on the company's current knowledge and experience and should not be considered a guarantee of the performance of a particular product. Users are advised to perform careful incoming inspection and testing to verify suitability for the intended application.