Composites

Families of Peroxides

The main families of organic peroxides used for curing unsaturated polyester are:

• Ketone peroxides, which are generally used at room or mid temperature in combination with cobalt salts.
• Diacyl peroxides, which like benzoyl peroxide can be used at room temperature, activated by tertiary aromatic amines, or without promoter at higher temperature (100°C/212°F).
• Peresters and Perketals, which are used at higher temperatures and are preferred in injection and compression molding processes.
• Hydroperoxides, which are used at higher temperatures in injection and compression molding processes.