基本信息:
- 专利标题： VERFAHREN ZUR WIEDERGEWINNUNG VON ROHSTOFFEN AUS POLYURETHANPRODUKTEN
- 专利标题（英）：METHOD FOR RECOVERING RAW MATERIALS FROM POLYURETHANE PRODUCTS
- 申请号：PCT/EP2022/081487 申请日：2022-11-10
- 公开(公告)号：WO2023083968A1 公开(公告)日：2023-05-19
- 发明人： HINZMANN, Dirk , BRANDT, Verena , SCHERF, Sebastian , FRANCISCO CASAL, Maria , LUEDTKE, Michelle , HAGEN, Torsten
- 申请人： COVESTRO DEUTSCHLAND AG
- 申请人地址： Kaiser-Wilhelm-Allee 60
- 专利权人： COVESTRO DEUTSCHLAND AG
- 当前专利权人： COVESTRO DEUTSCHLAND AG
- 当前专利权人地址： Kaiser-Wilhelm-Allee 60
- 代理机构： LEVPAT
- 优先权： EP21208004.8 2021-11-12
- 主分类号： C08J11/14
- IPC分类号： C08J11/14 ; C08J11/16 ; C08J11/28
The invention relates to a method for recovering raw materials from polyurethane products, said method having a chemolysis process. The chemolysis process is characterized in that the polyurethane products are reacted with (i) an aminic chemolysis reagent selected from (a) a primary or secondary organic amine, (b) an amino alcohol with a primary or secondary amino group, or (c) a mixture of (a) and (b) and (ii) water in the presence of (iii) a catalyst at a temperature ranging from 100 °C to 195 °C and at a pressure ranging from 900 mbar (abs) to 2000 mbar (abs), wherein the mass ratio of aminic chemolysis reagent and water to the polyurethane product ranges from 0.5 to 2.5, and the mass of the water ranges from 3.0% to 22% of the mass of the aminic chemolysis reagent.
IPC结构图谱:
| C | 化学；冶金 |
| --C08 | 有机高分子化合物；其制备或化学加工；以其为基料的组合物 |
| ----C08J | 加工；配料的一般工艺过程；不包括在C08B，C08C，C08F，C08G或C08H小类中的后处理 |
| ------C08J11/00 | 废料的回收或加工 |
| --------C08J11/04 | .聚合物的 |
| ----------C08J11/06 | ..无化学反应 |
| ------------C08J11/14 | ...用蒸气或水处理 |