Composition for rubber articles and rubber articles having low carbon footprint and high mechanical strength
HTC lignin, derived from superheated steam carbonization, addresses the mechanical property deterioration issue in rubber compounds by improving tensile strength and abrasion resistance when used with functionalized rubbers, allowing higher RFF content and reduced carbon footprint.
Patent Information
- Application Number
- JP2025534411
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-01-19
- Publication Date
- 2026-03-02
AI Technical Summary
Replacing a large proportion of carbon black in rubber compounds with renewable functional fillers (RFF) leads to a deterioration in mechanical properties, limiting the amount of RFF that can be used and reducing the potential for weight and carbon footprint reduction, especially in non-polar rubbers like EPDM.
Incorporating HTC lignin, obtained through superheated steam carbonization of lignin, with functionalized rubbers such as EPDM-g-MAH, or in combination with non-functionalized rubbers, enhances mechanical properties and allows for higher reinforcement levels of RFF, improving tensile strength, dynamic properties, and abrasion resistance.
HTC lignin improves stress-strain properties, increasing tensile strength, rebound resilience, and reducing abrasion while maintaining hardness and elongation at break, thus enhancing the mechanical performance of rubber compositions.