公开(公告)号：US20210054146A1

公开(公告)日：2021-02-25

申请号：US16545430

申请日：2019-08-20

申请人： COVESTRO LLC

发明人： Jay Johnston ,  Edward P. Squiller ,  Charles Todd Williams ,  Matthew Stewart ,  Wendy Gustavich ,  Mark Morris ,  Adam Miller

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.