- 专利标题： FAST PREPARATION OF LOW PRIMARY AMINE CONTAINING POLYASPARTIC ESTERS AND USE OF THESE POLYASPARTIC ESTERS IN SLOW REACTIVITY POLYUREA SYSTEMS
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申请号： US16545430申请日： 2019-08-20
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公开(公告)号： US20210054146A1公开(公告)日： 2021-02-25
- 发明人: Jay Johnston , Edward P. Squiller , Charles Todd Williams , Matthew Stewart , Wendy Gustavich , Mark Morris , Adam Miller
- 申请人： COVESTRO LLC
- 申请人地址： US PA Pittsburgh
- 专利权人： COVESTRO LLC
- 当前专利权人： COVESTRO LLC
- 当前专利权人地址： US PA Pittsburgh
- 主分类号： C08G69/44
- IPC分类号： C08G69/44 ; C08G69/28 ; C08G18/60 ; C08G18/73 ; C08J5/18 ; C09D177/06 ; C09D177/12 ; C09J177/06 ; C09J177/12 ; C09K3/10
摘要：
Low primary amine (LPA) polyaspartic esters are provided which comprise a reaction product of an aliphatic diamine and an excess of a Michael addition receptor optionally, in the presence of a C1-C10 alcohol, wherein the low primary amine (LPA) polyaspartic ester has a monoaspartate content of less than 10%. The low primary amine (LPA) polyaspartic esters of the invention may find use in slow reactivity polyurea systems and react with polyisocyanates to produce polyurea coatings, adhesives, sealants, films, composites, castings, and paints.
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