发明授权
- 专利标题： Method of making purely primary diamines from nitrogen containing nocleophile and terminally electrophilically active polyether
- 专利标题（中）： 从含氮嗜酸性粒细胞和终末亲电活性聚醚制备纯原始二胺的方法
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申请号： US67555申请日： 1987-06-26
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公开(公告)号： US4833213A公开(公告)日： 1989-05-23
- 发明人: Charles M. Leir , Jerome J. Hoffman , John E. Stark
- 申请人： Charles M. Leir , Jerome J. Hoffman , John E. Stark
- 申请人地址： MN St. Paul
- 专利权人： Minnesota Mining and Manufacturing Company
- 当前专利权人： Minnesota Mining and Manufacturing Company
- 当前专利权人地址： MN St. Paul
- 主分类号： C08G65/32
- IPC分类号： C08G65/32 ; C08G18/50 ; C08G65/20 ; C08G65/333
摘要：
The present invention provides a method for making primary amine terminated linear polyethers of molecular weight above about 3500 which have virtually no contamination from in-chain secondary amine functionalities or amine-terminated tertiary amine side-chains. This method involves the production of novel intermediates.The invention also provides purely linear polyether-polyurea block copolymers formed by chain extension of the primary amine terminated linear polyethers.
公开/授权文献
- USD391753S Side element of a shoe upper 公开/授权日：1998-03-10