- 专利标题: EPOXY CURING AGENTS AND USES THEREOF
-
申请号: US18276616申请日: 2021-02-04
-
公开(公告)号: US20240317927A1公开(公告)日: 2024-09-26
- 发明人: Yan Zhenlong , Shiying Zheng , Michael Cook
- 申请人: EVONIK OPERATIONS GMBH
- 申请人地址: DE Essen
- 专利权人: EVONIK OPERATIONS GMBH
- 当前专利权人: EVONIK OPERATIONS GMBH
- 当前专利权人地址: DE Essen
- 国际申请: PCT/CN2021/075361 2021.02.04
- 进入国家日期: 2023-08-09
- 主分类号: C08G59/18
- IPC分类号: C08G59/18 ; C09D163/00
摘要:
The present invention discloses a waterborne amine curing agent, process of making such curing agent, and curable amine-epoxy compositions. The curing agent comprises the product of the reaction of a first polyamine containing primary amine functionality and a first polyepoxide in a ratio of moles of polyamine per equivalents of polyepoxide sufficient to provide an amine terminated intermediate (a) comprising an adduct of about two moles of polyamine and one mole polyepoxide, intermediate (a) being then reacted with urea or formaldehyde to provide an amine terminated intermediate (b), intermediate (b) being then reacted with a second polyepoxide to provide an amine terminated intermediate (c), intermediate (c) being end capped with a monoepoxide composition comprising an aromatic glycidyl ether or an alkyl substituted aromatic glycidyl ether, or a combination of both, to form a polyamine-polyepoxide adduct, and contacting the polyamine-polyepoxide adduct with a second polyamine having two or more active amine hydrogens.
信息查询