Composites

Ketone Peroxides

In most of cases, Ketone peroxides are composed by different species. All Ketone peroxides are liquid.

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Product	Properties	Phlegmatizer	Active oxygen %	Recommended Application
Methyl Ethyl Ketone Peroxide (MEKP) (see structure)
DDM 9 Luperox® K1	Medium activity MEKP-a standard general purpose hardener for a wide variety of ambient temperature application. Low hydrogen peroxide content make these ideal for use in gel coats. Luperox® K1 and DDM9 is the Luperox® recommended for gel coats.	Non-Phthalate Phthalate	8.7 — 9.0 9.2	Hand Lay-up Spray-up Resin Tranfer molding Vacuum molding Centrifugal casting Filament winding Panels & sheets Casting Varnishes Gel coats
DHD 9 Luperox® K10	High activity MEKP - gives fast gel and cure time for a wide variety of ortho and isophtalic resin sytems.	Non-phthalate Phthalate	8.7 — 9.0 9.9	Hand Lay-up Spray-up Centrifugal casting Panels & sheets Varnishes
Luperox® K18	Ultra high activity MEKP - extremely short gel time. Recommended for button sheets, continuous sheet production and varnishes.	Phthalate	9.9	Varnishes Buttons
Delta X9 Luperox® K12	1. Low activity MEKP which gives long gel time in a wide variety of ortho and isophthalic resin systems. Particularly suitable during the warm season and for very large molded pieces. 2. High activity MEKP for use in a wide variety of vinyl ester resins to gain no foaming effect.	Non-phthalate Phthalate	8.7 — 9.0 8.5	Hand Lay-up Centrifugal casting Filament winding Casting Vinyl ester & bisphenol resins
Methyl Isobutyl Ketone Peroxide (MIKP) (see structure)
Luperox® K2	Methyl isobutyl ketone peroxide-for short curing cycles at medium and high temperatures from 65°C to 120°C even without cobalt accelerator. Due to its curing characteristics it is mostly used for the manufacture of flat and corrugated sheets in continuous processes.	Phthalate	10.1	Filament winding Panels & sheets Buttons
Acetyl Acetone Peroxide (AAP) (see structure)
Luperox® K3	Rapid propagation from gel to peak exotherm in many resin systems. This fast curing and heat dissipation are particularly useful for continuous and semicontinuous production processes. Its high activity make it suitable during the cold season. Luperox® K3/cobalt is the only alternative to a benzoyl peroxide/amine system if color stability as well as fast curing is required. It is not recommended for gel coats and vinyl ester resins.	Plasticizer	4.1	Hand Lay-up Resin tranfers molding Vacuum molding Cold molding Centrifugal casting Filament winding Panels & sheets Varnishes Concrete & marble
Cyclohexanone peroxide
Luperox® K4CE	High activity cyclohexanone peroxide - gives relatively short gel times and gradual curing with a low peak temperature. This product ensures curing of even thick wall pieces without stress or crack formation.	Plasticizer	5.1	Hand Lay-up Varnishes Putties Buttons