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Polyphosphoric acid (PPA) is widely used as a modifier to enhance bitumen properties.
When added to bitumen, PPA chemically interacts with the asphaltenes and resins, improving the overall performance of the asphalt binder such as stiffness, making it more resistant to high-temperature deformation, and rutting, while maintaining flexibility at lower temperatures, preventing cracking.
When combined with polymer, PPA also helps reduce the amount of polymer required to achieve desired performance, making it a cost-effective solution for enhancing bitumen quality. Its effectiveness at low concentrations means it can improve the properties of bitumen without significantly altering the production process, offering a versatile and efficient method for improving asphalt performance.
If a crosslinker is employed, make sure to crosslink the polymer first and wait enough time before adding PPA.
When added to bitumen, PPA chemically interacts with the asphaltenes and resins, improving the overall performance of the asphalt binder such as stiffness, making it more resistant to high-temperature deformation, and rutting, while maintaining flexibility at lower temperatures, preventing cracking.
When combined with polymer, PPA also helps reduce the amount of polymer required to achieve desired performance, making it a cost-effective solution for enhancing bitumen quality. Its effectiveness at low concentrations means it can improve the properties of bitumen without significantly altering the production process, offering a versatile and efficient method for improving asphalt performance.
If a crosslinker is employed, make sure to crosslink the polymer first and wait enough time before adding PPA.
Polyphosphoric acid
Applications
Products
ValoChem’s range of PPA, called PolyValTM, offers several advantages:
Binder improvement:
Application benefits:
Other:
Binder improvement:
- Improved high-temperature resistance
- Enhanced low-temperature flexibility
Application benefits:
- Cost-effective (reduces the need for expensive polymer additives)
- Easy integration into existing production processes
Other:
- PPA is a highly viscous liquid at room temperature. We supply the product in heated bulk or self-heating IBC to ease the handling of the product
Polyphosphoric acid
Applications
Products
Hydrogen sulphide (H2S) is a gas naturally present in many of the world's petroleum crudes. During the refining process, the sulphur naturally present is progressively concentrated, which regularly results in distillation residues loaded with sulphur or related molecules. H2S is therefore present in the gaseous atmosphere above all bitumen, in varying concentrations.
An additional factor in the emission of H2S in the case of bituminous binders is that, because of their viscosity, they are used (produced, transported, modified and applied) at temperatures high enough to induce thermal degradation of the sulphur molecules present.
ValoChem scavengers trap these poisonous emissions inside the bitumen, significantly reducing the HSE risks related to these hazardous particles.
An additional factor in the emission of H2S in the case of bituminous binders is that, because of their viscosity, they are used (produced, transported, modified and applied) at temperatures high enough to induce thermal degradation of the sulphur molecules present.
ValoChem scavengers trap these poisonous emissions inside the bitumen, significantly reducing the HSE risks related to these hazardous particles.
Polyphosphoric acid
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