申请人:Henkel Kommanditgesellschaft auf Aktien
公开号:EP1647587A1
公开(公告)日:2006-04-19
The curing rate of a two component laminating adhesive is effectively accelerated by incorporating in at least one component a microencapsulated catalyst. When the laminating adhesive is subjected to an effective amount of pressure (for example, the pressure applied when laminating flexible films together using nip rollers), the catalyst (which may be, for example, a dialkyl tin dicarboxylate) is released from encapsulation and is made available to catalyze the polyurethane-forming reaction between the isocyanate groups and the active hydrogen-functionalized groups in the adhesive mixture.
通过在至少一种成分中加入微胶囊催化剂,可有效加快双组分复合胶粘剂的固化速度。当层压胶粘剂受到有效的压力(例如,使用压辊将柔性薄膜层压在一起时施加的压力)时,催化剂(例如,可以是二烷基锡二羧酸盐)从封装中释放出来,并可用于催化异氰酸酯基团与胶粘剂混合物中的活性氢官能团之间的聚氨酯形成反应。