申请人:Bayer Aktiengesellschaft
公开号:US03985789A1
公开(公告)日:1976-10-12
Novel compounds which upon heating are converted into the corresponding phenol which is a catalyst for the trimerization of compounds having isocyanato groups to form isocyanurates have the formula: ##SPC1## In which n represents an integer of from 1 to 4 A represents an aromatic hydrocarbon group obtained by removing the NCO group from a monomeric aromatic monoisocyanate containing 6 - 14 carbon atoms, R.sub.1 and R.sub.2 may be the same or different and represent a C.sub.1 to C.sub.6 alkyl group or a polymethylene chain containing 4 to 8 carbon atoms which together with a nitrogen atom form a heterocyclic ring, R.sub.3 may be hydrogen, chlorine, bromine or a C.sub.1 - C.sub.18 -alkyl group.
通过加热转化为相应酚并用作三聚化异氰酸酯的催化剂的新化合物具有以下公式:##SPC1## 其中n表示1至4之间的整数,A表示从含有6-14个碳原子的单体芳香基单异氰酸酯中去除NCO基团后得到的芳香烃基团,R.sub.1和R.sub.2可以相同或不同,表示C.sub.1至C.sub.6烷基或含有4至8个碳原子的聚亚甲基链,与氮原子一起形成杂环环,R.sub.3可以是氢,氯,溴或C.sub.1-C.sub.18烷基。