ADHESIVE USEFUL FOR INSTALLING VEHICLE WINDOWS PROVIDING RAPID DRIVE AWAY TIME

In one embodiment, the invention is a composition comprising: a) one or more isocyanate functional polyether based prepolymers having a polydispersity of less than about 2.5 determined by Gel Permeation Chromatography at a Mp of >1000; b) one or more plasticizers in sufficient amount that the composition can be pumped and applied to a substrate at a temperature of −10° C., preferably in an amount of about 15 percent by weight or less; c)one or more fillers in sufficient amount such that the composition exhibits a press flow viscosity or about 8 grams per minute or more; d) one or more catalysts for the reaction of isocyanate moieties with isocyanate reactive groups; wherein the composition demonstrates 30 minutes after application a high speed impact of about 1.6 MPa or greater according to DIN EN 1465 high speed impact test. Preferably, the adhesive exhibits 30 minutes after application a peak strength of about 1.6 MPa or greater and an energy uptake of about 2.5 J or greater in a high speed impact test at 4 m/s and more preferably after full cure a strength of at least 3 MPa in a quasi-static lap shear test at 10 mm/min according to DIN EN 1465. In a preferred embodiment, the filler comprises one or more carbon blacks, one or more non-pigmented fillers, one or more calcium carbonates, one or more thixotropes or a combination thereof. In a preferred embodiment, the one or more carbon black compositions are present in an amount such that the composition has a resistivity of at least 1010 Ohm-cm. In another preferred embodiment, a combination of one or more fillers and one or more isocyanate functional polyester based prepolymers is present in a sufficient amount that the composition exhibits a press flow viscosity of about 8 grams per minute or more.