The invention relates to a process for preparing polyisocyanates having a high uretdione group content by phosphine-catalysed isocyanate oligomerization in the presence of organic carbonates and/or nitriles.
申请公布号
CA2533080(C)
申请公布日期
2014.07.08
申请号
CA20062533080
申请日期
2006.01.16
申请人
BAYER MATERIALSCIENCE AG
发明人
RICHTER, FRANK;LAAS, HANS-JOSEF;HALPAAP, REINHARD;HECKING, ANDREAS
