基本信息:
- 专利标题: PRODUCTION OF PU FOAMS
- 申请号:PCT/EP2022/067706 申请日:2022-06-28
- 公开(公告)号:WO2023275037A1 公开(公告)日:2023-01-05
- 发明人: TERHEIDEN, Annegret , HILDEBRAND, Jens , HINRICHS-TONTRUP, Natalia , HERMANN, Daniela
- 申请人: EVONIK OPERATIONS GMBH
- 申请人地址: Rellinghauser Strasse 1-11
- 专利权人: EVONIK OPERATIONS GMBH
- 当前专利权人: EVONIK OPERATIONS GMBH
- 当前专利权人地址: Rellinghauser Strasse 1-11
- 代理机构: EVONIK PATENT ASSOCIATION
- 优先权: EP21183445.2 2021-07-02
- 主分类号: C08G18/16
- IPC分类号: C08G18/16 ; C08G18/18 ; C08G18/24 ; C08G18/48 ; C08G18/76 ; C08J11/14 ; C08G18/165 ; C08G18/1825 ; C08G18/244 ; C08G18/4804 ; C08G18/4829 ; C08G18/7621 ; C08G2110/0008 ; C08G2110/0083 ; C08J2375/04
摘要:
Process for producing PU foams, preferably flexible PU foams by reacting at least one polyol component, comprising recycled polyol, with at least one isocyanate component in the presence of one or more catalysts that catalyse the isocyanate-polyol and/or isocyanate-water reactions and/or isocyanate trimerization, characterized in that the recycled polyol was obtained by hydrolysis of a polyurethane, comprising contacting said polyurethane with water in the presence of a specific base-catalyst-combination.
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 |
----C08G | 用碳—碳不饱和键以外的反应得到的高分子化合物 |
------C08G18/00 | 异氰酸酯类或异硫氰酸酯类的聚合产物 |
--------C08G18/06 | .与具有活性氢的化合物 |
----------C08G18/08 | ..工艺过程 |
------------C08G18/16 | ...催化剂 |