- 专利标题: PROCESS FOR PREPARING FOAMED POLYMER-MODIFIED BITUMEN COMPOSITIONS
-
申请号: US17637065申请日: 2020-08-27
-
公开(公告)号: US20220402819A1公开(公告)日: 2022-12-22
- 发明人: Timo MANGEL , Maik SCHACHT , Michael DIETZSCH , Frank WAGNER , Uwe VAGT , Susanne SCHNEIDER , Carmen-Elena CIMPEANU , Ekkehard JAHNS , Sophie PUTZIEN
- 申请人: BASF SE
- 申请人地址: DE Ludwigshafen am Rhein
- 专利权人: BASF SE
- 当前专利权人: BASF SE
- 当前专利权人地址: DE Ludwigshafen am Rhein
- 优先权: EP19194052.7 20190828
- 国际申请: PCT/EP2020/073942 WO 20200827
- 主分类号: C04B26/26
- IPC分类号: C04B26/26 ; C04B24/26 ; C04B38/10
摘要:
The invention relates to a process for preparing foamed polymer-modified bitumen compositions and to the use thereof for the production of asphalt. The invention also relates to foamed polymer-modified bitumen compositions obtainable by this process. Furthermore, the invention relates to a process for producing an asphalt composition and to the use thereof in road applications. The process for the preparation of the foamed polymer-modified bitumen composition comprises the following steps: i) Heating and pressurizing a bitumen to obtain a hot flowing bitumen stream, ii) Injecting under pressure an aqueous polymer dispersion into the hot flowing bitumen stream obtained in step i), to obtain a pressurized flowing mixed stream of the bitumen and the aqueous polymer dispersion; iii) Expanding the flowing mixed stream, in particular to atmospheric pressure, such that the water contained in the aqueous polymer dispersion vaporizes and foams the mixed stream to obtain a foamed polymer-modified bitumen.
信息查询