Thixotropic moisture cure urethane adhesive

摘要

An adhesive composition which is a mixture of: (A) between about 30 and about 99 wt% of a first urethane adhesive component which is formed from a polyether polyol having a weight average molecular weight of between about 400 and about 10,000, the polyether polyol being end-capped with an isocyanate and having an isocyanate functionality between about 2.0 and about 3.0; (B) between about 1 and about 70 wt% of a second urethane adhesive component formed from a polyester diol or polyester diol mixture having hydroxyl functionalities of at least about 2, the polyester diol or polyester diol mixture being end-capped with an isocyanate and has a isocyanate functionality of between about 2 and about 2.3; and (C) between about 1 and about 70 wt% of unreacted isocyanate having an isocyanate functionality of between about 2 and about 3.