Heat resistance imparting agent for asphalt and method for imparting heat resistance
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- ニチレキグループ株式会社
- Filing Date
- 2024-12-11
- Publication Date
- 2026-06-23
AI Technical Summary
【0013】 本発明の一側面に係る熱耐性付与剤又は熱耐性付与方法によれば、アスファルトへ熱耐性を付与することができる。また、本発明の一側面に係るアスファルト組成物は、従来のアスファルトと比較して高い熱耐性を発揮し得る。
Smart Images
Figure 2026102235000001_ABST
Abstract
Claims
1. A heat-resistant agent for asphalt containing lignin as an active ingredient.
2. The heat resistance imparterant according to claim 1, wherein the lignin is one or more selected from Kraft lignin, lignin sulfonic acid or a salt thereof, dealkalized lignin, and glycol-modified lignin.
3. The heat resistance imparting agent according to claim 1 or 2, used such that the amount of lignin added per 100 parts by mass of asphalt is 1 part by mass or more and 10 parts by mass or less.
4. A method for imparting heat resistance to asphalt, characterized by incorporating lignin into the asphalt.
5. The method according to 4, characterized in that the lignin is one or more selected from Kraft lignin, lignin sulfonic acid or a salt thereof, dealkalized lignin, and glycol-modified lignin.
6. The method according to claim 4 or 5, characterized in that the lignin is contained in an amount of 1 to 10 parts by mass per 100 parts by mass of asphalt.
7. An asphalt composition containing asphalt and lignin.
8. The asphalt composition according to claim 7, wherein the lignin is one or more selected from kraft lignin, lignin sulfonic acid or a salt thereof, dealkalized lignin, and glycol-modified lignin.
9. The asphalt composition according to claim 7 or 8, which contains 1 to 10 parts by mass of lignin per 100 parts by mass of asphalt.