NORAC offers the most extensive line of Ketone Peroxide products available to fabricators and casters of unsaturated polyester and vinyl ester resins. The Norox liquid peroxides are characterized by extremely consistent specifications and tightly controlled impurity levels. 

Standard Ketone Peroxides
Norox® MEKP-9

Liquid, 9% Active Oxygen. Clear solution of MEKP in dimethyl phthalate. Excellent all-around product for room temperature cure of polyester resins and gel coats.

Norox® MEKP-9H

Liquid, 9% Active Oxygen. Clear solution of MEKP in dimethyl phthalate. Features reduced level of hydrogen peroxide for critical gel coat applications.

Norox® MEKP-30

Liquid, 5.5% Active Oxygen. Clear solution of MEKP in dimethyl phthalate. Reduced strength version of MEKP-9.

Norox® MEKP-900

Liquid, 9% Active Oxygen. Clear solution of MEKP in dimethyl phthalate. Higher hydrogen peroxide content gives faster gel times in many resins.

Norox® MEKP-925

Liquid, 9% Active Oxygen. Clear solution of MEKP in dimethyl phthalate. Specifically formulated to give improved performance in most vinyl ester resins. Can also give excellent results in general purpose resin systems.

Norox® MEKP-925H

Liquid, 9% Active Oxygen. Clear solution of MEKP in dimethyl phthalate. Formulated for reduced gas generation in vinyl ester resin based gel coats, barrier coatings and corrosion resistant construction.

 

Specialty Ketone Peroxides
Norox® MEC

Liquid, 9% Active Oxygen. Clear liquid mixture of MEKP and cyclohexanone peroxides. Shorter gel to peak exotherm times. Highly recommended for use with gel coats.

Norox® AZOX

Liquid, 4.4% Active Oxygen. Clear, fire-resistant solution of Acetyl Acetone Peroxide. Combines moderate gel times with fast green strength development. Can be used in combination with MEKP for intermediate properties.

Norox® FS-100/9

Liquid 9% Active Oxygen. Clear fire-resistant solution of MEKP. Excellent product for fast green strength development in cast marble and onyx applications. Not recommended for gel coats.

Norox® W-60
 

Liquid, 9% Active Oxygen. Clear, fire-resistant solution of MEKP. Specifically formulated for water-extended polyester.

Norox® MCP

Liquid, 9% Active Oxygen. Pale yellow liquid mixture of MEKP and cumyl hydroperoxide. For use with polyester and vinyl ester resins when low peak exotherm is needed with excellent final cure.

 

As a leading producer of benzoyl peroxide products, NORAC has developed many formulations which are used in the pharmaceutical, auto body filler and polymer industries. Contact NORAC for more information on your special benzoyl peroxide needs.

Benzoyl Peroxides

Benox® A-80

Technical grade benzoyl peroxide containing 20% water, minimum. An easily handled, free-flowing product with uniform granules. 5.1% Active Oxygen

Benox® A-75

Technical grade benzoyl peroxide containing minimum of 25% water in free-flowing granular form. 4.8% Active Oxygen.

Benox® A-70

Technically pure granular form of benzoyl peroxide containing 30% water. Also available in a U.S.P. grade. 4.4% Active Oxygen.

Benox® A-40P
 

Very pure, finely divided 40% slurry of benzoyl peroxide with only a trace of wetting agent. Easily added to formulations without additional grinding.

Benox® B-55

A fine dispersion of 55% benzoyl peroxide in a white paste form with plasticizer diluent. 3.6% Active Oxygen.

Benox® B-50

Provides 50% benzoyl peroxide in a smooth, non-separating cream dispersion. Also available in red and blue pigmented versions. 3.3% Active Oxygen.

Benox® L-40LV

 

Low viscosity dispersion of 40% benzoyl peroxide. Diluted with a non phthalate ester plasticizer, this product can be sprayed with minimum of separation under pressure 2.6% Active Oxygen.



Other Peroxide Products
Norox® TBPB

Liquid, 8.1% Active Oxygen. Exceptionally high purity tertiary-Butyl Peroxybenzoate. Used for polymerization of ethylene and styrene and for high temperature molding of polyester resin systems.

Norox® P-20

Liquid, 6.4% Active Oxygen. A modified version of Norox TBPB. Requires no refrigerated temperature protection and can be used in place of peroxyesters requiring temperature protected shipping and storage.

Norox® CHP

Liquid, 8.2% Active Oxygen. An 85% solution of cumyl hydroperoxide. Use as a polymerization initiator for both vinyl and methacrylate monomers as well as ambient and elevated temperature cure of unsaturated polyester and vinyl ester resins.

Norox® DCP

White crystalline powder, 5.8% Active Oxygen. A 99% active ingredient form of dicumyl peroxide used in vulcanization of elastomers and heat assisted cross-linking of poly-olefins. Also available in 40% active version on inert, free-flowing carriers.

Norox® TBHP

Liquid, 12.4% Active Oxygen. Readily soluble, colorless solution containing 70% tertiary-Butyl Hydroperoxide with water as the major diluent. Convenient source of free radicals for polymerization of various monomers where presence of water is not detrimental.

Norox® DTBP

Liquid, 10.8% Active Oxygen. An exceptionally high purity form of di-tertiary-Butyl Peroxide containing a minimum of hydroperoxide impurity. Excellent source of free radicals in elevated temperature polymerization of monomers and resins.