Process for preparing low-odor and storage-stable monomer-containing polyisocyanurates from isophorone diisocyanate
申请人:Degussa AG
公开号:US20020022726A1
公开(公告)日:2002-02-21
The present invention provides a process, which includes:
partially trimerizing isophorone diisocyanate in the presence of a catalyst having the formula:
[R—NX
3
]
⊕
Y
⊖
wherein R and X are butyl groups and Y
−
is CH
3
COO
−
; or
wherein R is a benzyl group, Y
−
is a carboxylate anion having from 4 to 8 carbon atoms and each X is an alkylene group having from 2 to 3 carbon atoms, wherein the three alkylene groups share a common carbon atom and, together with the N atom in the formula, form a tricyclic structure, and wherein at least one alkyene group has at least one OH group in an &agr; or &bgr; &ggr; position relative to the N atom,
to obtain a monomer-containing polyisocyanurate mixture. The present invention also provides a monomer-containing polyisocyanurate mixture made from the above process.
本发明提供了一种方法,包括:在具有以下结构的催化剂存在下,部分三聚异佛酮二异氰酸酯:[R—NX3]⊕Y⊖其中R和X为丁基基团,Y−为CH3COO−;或其中R为苄基基团,Y−为具有4至8个碳原子的羧酸根离子,每个X为具有2至3个碳原子的烷基基团,其中三个烷基基团共享一个共同的碳原子,并且与公式中的N原子一起形成一个三环结构,并且至少一个烷基基团在与N原子相对的α或β或γ位置上至少有一个OH基团,以获得含单体的聚异氰酸酯混合物。本发明还提供了由上述方法制备的含单体的聚异氰酸酯混合物。