A process for preparing high-functionality highly branched polyureas which comprises reacting one or more carbonates with one or more amines having at least two primary and/or secondary amino groups, at least one amine having at least three primary and/or secondary amino groups.
Highly Functional, Highly Branched Polyureas
申请人:Bruchmann Bernd
公开号:US20080306237A1
公开(公告)日:2008-12-11
The present invention relates to a process for preparing high-functionality highly branched polyureas which comprises reacting one or more ureas with one or more amines having at least two primary and/or secondary amino groups, at least one amine having at least three primary and/or secondary amino groups.
US7176271B2
申请人:——
公开号:US7176271B2
公开(公告)日:2007-02-13
US7645855B2
申请人:——
公开号:US7645855B2
公开(公告)日:2010-01-12
Novel hyperbranched polymer based on urea linkages
作者:Anil Kumar、E. W. Meijer
DOI:10.1039/a803676d
日期:——
The thermal decomposition of 3,5-diaminobenzoyl azide, to generate in situ the corresponding 3,5-diaminophenyl isocyanate, was found to give hyperbranched polyureas, whose structure was established using IR and NMR spectroscopy.