申请人:AIR PRODUCTS AND CHEMICALS, INC.
公开号:EP0311901A2
公开(公告)日:1989-04-19
This invention relates to alkenylated diphenyldiisocyanates having at least one alkenyl group ortho to an isocyanate group. More particularly the diphenyldiisocyanates 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 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 fluoroalkylene group, n is 0 or 1 and z is 0 or 1.
The above described alkenylated diphenyldiisocyanates have been found to be well suited for preparing crosslinkable condensation polymers by providing pendant unsaturation for post curing and polymerization. They are also well suited for preparing polyurethane and polyurea elastomer systems.
本发明涉及至少有一个烯基正交于异氰酸酯基团的烯基二苯基二异氰酸酯。更具体地说,二苯基二异氰酸酯由式表示:
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,但一个以上为苯基、X为亚甲基、亚烷基或支链 C₁-C₆亚烷基、氧、硫、羰基、磺酰基或氟烷基,n 为 0 或 1,z 为 0 或 1。
已发现上述烯基化二苯基二异氰酸酯通过提供用于后固化和聚合的悬垂不饱和度, 非常适合制备可交联缩合聚合物。它们还非常适合制备聚氨酯和聚脲弹性体系统。