Hydroxyl-terminated polybutadiene-based polyurethane (HTPB-PU)-modified asphalt and preparation method thereof

US12122868B2 · kind B2 · utility

Assignee

• TONGJI UNIVERSITY · CN

Inventors

• Hui Li · Santa Clara, US
• Xin Zuo · Lo Wu, CN
• Yuzhao Han · Shanghai, CN
• Ning Xie · 恩江镇, CN
• Ming Jia · Ottawa, CA
• Bing Yang · Shanghai, CN
• Jiawen Liu · Shanghai, CN
• XUE-QIN ZHANG · Nanhu, CN
• Yu Tian
• Yuzhe Jiang · Shanghai, CN

Key dates

• Filing date: Oct 26, 2023
• Grant date: Oct 22, 2024
• Expiry date: Oct 26, 2043

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02A30/30
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Disclosed are a hydroxyl-terminated polybutadiene-based polyurethane (HTPB-PU)-modified asphalt and a preparation method thereof. In the disclosure, the HTPB-PU-modified asphalt includes the following components in parts by weight: 90 parts to 97 parts of a base asphalt and 3 parts to 10 parts of HTPB-PU, where the HTPB-PU is prepared from raw materials including an isocyanate and a polyol, and the polyol includes hydroxyl-terminated polybutadiene (HTPB) with a weight percentage of not less than 80%.