Alkenylated phenylenediamines for use in preparing cross linkable condensation polymers
申请人:AIR PRODUCTS AND CHEMICALS, INC.
公开号:EP0290962A2
公开(公告)日:1988-11-17
This invention relates to a class of alkenylated phenylenediamines having at least one alkenyl group ortho to an amine group. More particularly the phenylenediamines are represented by the formula:
wherein R₁, R₂, R₃, R₄ and R₅ are hydrogen, C₁₋₃ aliphatic, phenyl, halogen or alkoxy radicals, or R₂ and R₄ or R₅ are bridged via an alkylene radical -(CH₂)y- wherein y=2 to 5 and ortho to an amine group,provided that in said formula at least one of R₁, R₂, R₃, R₄ or R₅ is C₁ or greater and not more than one is phenyl, halogen or alkoxy and x is one or two.
The above described alkenylated phenylenediamines 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苯二胺。更具体地说,这些苯二胺由式表示:
其中 R₁、R₂、R₃、R₄ 和 R₅ 是氢、C₁₋₃ 脂肪族、苯基、卤素或烷氧基、或 R₂ 和 R₄ 或 R₅ 通过亚烷基-(CH₂)y-桥接,其中 y=2 至 5 并与胺基正交、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,且不多于一个是苯基、卤素或烷氧基,且 x 为 1 或 2。
研究发现,上述烯基化苯二胺非常适合作为抗氧化剂、三官能团和四官能团扩链 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。