NOROX ? AZOX is a colorless solution of acetylacetone peroxide (AAP) or 2,4-pentanedione peroxide containing stabilizers.NOROX ? AZOX is a very effective polymerization initiator for room temperature cure of unsaturated polyester resins, and can be worked in most resin systems at very fast cure times with little or no effect on gel time. This performance characteristic is particularly beneficial in resin transfer molding (RTM), cast polymers, and other applications where rapid mold turnaround is required to improve productivity.

An additional advantage of NOROX ? AZOX is the low fire or explosion hazard. In the United States, a precautionary organic peroxide yellow label is not required for shipping.

Technical data

• Active oxygen: 4.4
• Form: Liquid
• Color: Colorless
• Specific gravity (25°C): 1.15
• Viscosity: 16.0 cps
• Flash Point (C.O.C.): 200°F/93°C, min.
• Flash Point (SETA C.C.): 150°F/66°C, min.
• Soluble in: water, ethers, ketones and alcohols
• Insoluble in: aromatics, chlorinated hydrocarbons and aliphatic hydrocarbons

appliance NOROX ? AZOX is an extremely effective initiator for fast curing in many resin systems without significantly shortening the gel time.NOROX ? AZOX is best suited for resins promoted with cobalt only, using 0.1% to 0.5% cobalt (naphthenic or octanoic acid in 6% solution). In some cases, the addition of diethyl or dimethylaniline from 0.1% to 0.3% can accelerate the resin cure, producing an extremely high exothermic cure. The type and level of resin inhibitor also has a significant effect on the performance of NOROX ? AZOX. In general, high inhibitor levels are often undesirable, and some quaternary ammonium salts can cause significant yellowing of the resin, as well as inhibit the gel and cure characteristics of the resin system.

NOROX ? AZOX curing initiators have observed excellent final cure and dimensional stability in toolmaking and RTM applications.

Application Results Tables I and II show the results that can be obtained with NOROX ? AZOX compared to standard MEKP formulations.

Table I - Gel and Cure Data for Marble Resins Table II - Gel and Cure Data for Composite Resins

In addition, NOROX ? AZOX is often used in combination with standard MEKP formulations, and the exact mixing ratio will give intermediate results between the two products, depending on the mixing ratio. Tables III and IV compare the gel and cure characteristics of several AAP/MEKP blends in casting and laminating resins.

Packaging, transportation and supply

• NOROX ? AZOX is available in standard package sizes of 4x8 lb and 44 lb (20 kg) polyethylene bottles.
• Classification - Refer to sections 14 and 15 of the specific NOROX ? AZOX Safety Data Sheet (SDS) for transportation and regulatory information.

Please note: NOROX ? AZOX is available through a global network. Please contact United Initiators, Inc. for the name of the distributor in your area.

statement denying or limiting responsibility The information provided and all further technical advice - whether verbal, written or experimental - is based on our in-house testing of local raw materials and reflects our current knowledge and experience. The purpose of this information is to inform interested parties about our products and their possible applications. They should not be interpreted as a guarantee of specific product performance or its suitability for a particular application. Furthermore, this information does not contain complete instructions for use. Nor do they guarantee quality or durability. We reserve the right to make changes due to technological advances and company progress. Any existing third party copyrights should be taken into account.

The application and use of our products based on our application expertise recommendations are beyond our control and are solely the responsibility of the user. The user is not exempted from the obligation to verify the fitness and suitability for the chosen purpose.