- Product Name: NOROX® HDP-75
- Chemical Composition: Methyl ethyl ketone peroxide / tert-butyl hydroperoxide toluene
- Main Application: A liquid polymerization initiator used for curing special unsaturated polyester and vinyl ester resins at room temperature
- Product Advantages/Properties:
- Low peak exothermic heat release
- Longer pot life (gel time)
- Eliminates the “front-end effect” commonly associated with other peroxides in VRTM applications
- Faster initial strength development compared to other mixtures of tert-butyl hydroperoxide and toluene
- Excellent final cure results
- Eliminates the need for on-site mixing of peroxides
- Reduces foaming potential and gas release when used with vinyl esters in impregnation processes
- Active oxygen content: not more than 9.0%
- Appearance: Liquid
- Color: Pale yellow
- Specific gravity at 25°C: 1.09
- Flash point (C.O.C.): Not less than 200°F/93°C
- Flash point (SETA C.C.): Not less than 150°F/66°C
- Solubility: Oxidizing organic solvents
- Slightly soluble in: water
- A liquid polymerization initiator suitable for unsaturated polyester and vinyl ester resins; ideal for applications requiring lower peak exothermic heat release
- Compared to standard NOROX MEKP products (e.g., MEKP-925, -925H, etc.), it has a longer gel time but typically results in higher hardness of the fully cured resin
- Suitable for applications with thin cross-sections that require control of peak exothermic heat release and fast demolding times
- A comparison of performance with other MEKP products demonstrates the curing characteristics of NOROX® HDP-75 in various resin systems
- Standard packaging sizes: 4x8-pound and 44-pound (20-kilogram) polyethylene bottles
- Pre-colored 44-pound (20 kg) bottles of NOROX® HDP-75 are available
- The information and technical recommendations provided in this document are based on internal testing and are intended to inform interested parties about our products and their potential applications. This information should not be construed as a guarantee of specific product properties or their suitability.
- We reserve the right to make any changes in light of technological advancements and business developments.
- To the extent permitted by law, we assume no liability for the intellectual property rights of third parties.
- The use and application of our products based on our application recommendations are beyond our control and are the sole responsibility of the user. The user is obligated to verify that the product is suitable for its intended use.