| 摘要 |
<p>This invention relates to a class of alkenylated dianilines having at least one alkenyl group ortho to an amine group and in conjugated relationship to the ring. More particularly the dianilines are represented by the formula: <CHEM> 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 provided not more than one is phenyl, halogen or alkoxy, X is methylene, alkylene, or branched C1-C6 alkylene group, oxygen, sulfur, carbonyl, sulfonyl; or per fluoroalkylene group, n=1 or 0, and z=0 or 1. The above described alkenylated dianilines have been found to be well suited as tri-and tetra functional chain extenders in forming polyurethane/urea elastomers systems and for providing pendant unsaturation for post curing and polymerization.</p> |
