申请人:Air Products and Chemicals, Inc.
公开号:US04714778A1
公开(公告)日:1987-12-22
This invention relates to a class of alkenylated toluenediamines having at least one alkenyl group ortho to an amine group. More particularly the toluenediamines are represented by the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are hydrogen, C.sub.1-3 aliphatic, phenyl, halogen or alkoxy radicals, or R.sub.2 and R.sub.4 or R.sub.5 are bridged via an alkylene radical --(CH.sub.2).sub.y -- wherein y=2 to 5, and x is one or two provided that in said formula at least one of R.sub.1, R.sub.2, R.sub.3, R.sub.4 or R.sub.5 is C.sub.1 or greater. The above described alkenylated toluenediamines have been found to be well suited as antioxidants and as tri- and tetra functional chain extenders in forming polyurethane/urea elastomers systems and for providing pendant unsaturation for post curing and polymerization.
本发明涉及一类具有至少一个烯丙基团正交于胺基的甲苯二胺衍生物。更具体地,所述甲苯二胺衍生物由以下公式表示:##STR1##
其中R1,R2,R3,R4和R5为氢、C1-3脂肪基、苯基、卤素或烷氧基,或R2和R4或R5通过烷基--(CH2)y--桥接,其中y=2至5,x为1或2,但在所述公式中至少有一个R1、R2、R3、R4或R5为C1或更大。上述描述的烯丙基化甲苯二胺衍生物已被发现非常适用于作为抗氧化剂以及在形成聚氨酯/脲弹性体系统中作为三元和四元功能链延伸剂,并为后固化和聚合提供侧链不饱和度。