Biopolymer asphalt substitute
By using 3-hydroxybutyrate and 3-hydroxyvalerate copolymer (PHBV) as an asphalt substitute, the problem of crude oil cost and supply shortage in the asphalt industry has been solved, realizing an environmentally friendly alternative that utilizes waste streams from wastewater treatment processes to meet the performance requirements of road and roofing materials.
Patent Information
- Application Number
- CN202480048024.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-07-19
- Filing Date
- 2024-04-11
- Publication Date
- 2026-03-27
AI Technical Summary
The existing asphalt industry faces rising crude oil costs and tight supply, and plant-based asphalt alternatives compete with human and animal food supplies. Therefore, it is necessary to find non-plant-based alternative materials to achieve CO2 neutralization goals for road transport infrastructure and other application areas.
A copolymer of 3-hydroxybutyrate monomer and 3-hydroxyvalerate (PHBV) is used as an asphalt substitute, especially when blended with mineral aggregates in asphalt compositions. The asphalt substitute is prepared by high temperature and high shear process and is used for road and roof materials.
PHBV, as a bitumen substitute, provides an environmentally friendly solution while maintaining or improving mechanical properties. It utilizes waste streams from wastewater treatment processes, reducing dependence on crude oil and supporting a circular economy.