A broad class of roofing materials is now made from Thermoplastic Polyolefins (TPO) to meet today's demanding building and construction applications. Unlike historically used EPDM membranes, TPO products are typically light in color and can reflect heat away from the building, decreasing cooling costs in the summer.
TPO roof membranes are heat-weldable, so seams are more potent and longer lasting. Unlike PVC roofing, TPO is eco-friendly and fully recyclable. TPO roof membranes are also cost-effective, exhibiting high resistance to puncture, impact, and tearing.
TPO membrane roofing applications are not without their shortcomings and significant challenges in enduring the high heat and UV loads to which most commercial roofs are exposed. Therefore, it is critical to incorporate a robust and proven stabilization package from the SI Group into your TPO formula.
The SI Group portfolio of antioxidant and UV stabilizer solutions below are used in various building and construction applications depending on your formulation needs and end-use.
| Product | Type | Description |
|---|---|---|
| ALKANOX™ Phosphite Antioxidants | Antioxidant | An Organo-phosphite antioxidant that exhibits excellent hydrolytic stability; Effectively reduces peroxide induced oxidative degradation during processing, including at high temperatures |
| ANOX™ Binary Blend Antioxidants | Antioxidant | Solid binary synergistic blends used to protect polymers during high temperature processing and long term aging; Non-Dusting Blends are compact, often customized, cost-effective antioxidant blends |
| ANOX™ Hindered Phenolic Antioxidants | Antioxidant | Provides very low volatility and excellent resistance to extraction from polymer compounds.; Particularly effective against degradation during long-term aging, but can also be an effective process stabilizer and exhibit good discoloration resistance |
| LOWILITE™ Benzotriazole UV Absorbers | UV Stabilizer | Benzotriazole and Benzophenone UV Absorbers; Ideal for UV resistance in a variety of polymer systems |
| LOWILITE™ Hindered Amine Light Stabilizers | UV Stabilizer | Hindered Amine Light Stabilizers; Maximizes color yield in pigmented systems, improves resistance to acidic conditions, and does not migrate easily |
| LOWINOX™ Hindered Phenolic Specialty Antioxidants | Antioxidant | Antioxidants that provide low volatility and excellent resistance to extraction from polymer compounds, allowing exceptional processing and end-use stability |
| LOWINOX™ S-Bridged Phenolic Specialty Antioxidants | Antioxidant | Sulfur containing secondary stabilizers that are non-discoloring and non-staining |
| NAUGARD™ Metal Deactivators | Antioxidant | Unique antioxidant that includes metal deactivation; May be used where there is interference from metallic ions such as from residual polymer catalyst, inorganic pigments, or mineral filled polymers |
| NAUGARD™ Thioester Specialty Antioxidants | Antioxidant | Auxiliary stabilizers used to promote long term ambient aging properties and allow for excellent color and processing |
| ULTRANOX™ Solid Phosphite Antioxidants | Antioxidant | Features a higher phosphorus content than competitive phosphite antioxidants, offers high performance even at low loading levels for a more cost effective formula |
| WESTON™ Liquid Phosphite Ester Antioxidants | Antioxidant | High-purity secondary stabilizer additives for PVC systems |
| WESTON™ Solid Phosphite Antioxidants | Antioxidant | High-purity phosphite antioxidants that are effective heat, color, and viscosity stabilizers which provide additional synergies when paired with hindered phenols |
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