申请人:AIR PRODUCTS AND CHEMICALS, INC.
公开号:EP0235825A2
公开(公告)日:1987-09-09
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:
wherein R1, R2, R3, R4 and Rs are hydrogen. C1-3 aliphatic, phenyl, halogen or alkoxy radicals, or R2 and R4 or Rs are bridged via an alkylene radical -(CH2)y- wherein y=2 to 5, and x is one or two provided that in said formula at least one of R1, R2, R3, R4 or R5 is C1 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.
本发明涉及一类至少有一个烯基与胺基正交的烯化甲苯二胺。更具体地说,这些甲苯二胺由式表示:
其中 R1、R2、R3、R4 和 Rs 为氢。C1-3脂肪族、苯基、卤素或烷氧基,或 R2 和 R4 或 Rs 通过亚烷基-(CH2)y-桥接,其中 y=2 至 5,且 x 为 1 或 2,条件是在所述式中,R1、R2、R3、R4 或 R5 中至少有一个是 C1 或更大。
已发现上述烯基化甲苯二胺非常适合作为抗氧化剂和三官能和四官能链延伸剂,用于形成聚氨酯/尿素弹性体体系,并为后固化和聚合提供悬垂不饱和度。