ADHESIVE USEFUL FOR INSTALLING VEHICLE WINDOW PROVIDING RAPID DRIVE AWAY TIME

PROBLEM TO BE SOLVED: To provide a composition useful as an adhesive for bonding glass to a vehicle and a building, having moderate press flow viscosity and excellent in curing speed and shock resistance of a cured product.SOLUTION: There is provided the composition containing a) one or more isocyanate functional polyether-based prepolymer having an average polydispersive index of about 2.5 or less calculated by GPC (Gel Permeation Chromatography) at an Mp of over 1,000 and 1.2 to 2.2% of free isocyanate, b) less than 15 wt.% of one or more plasticizer, c) one or more catalyst for a reaction of an isocyanate component and an isocyanate reactive group, d) one or more filler in such a sufficient amount that the composition shows a predetermined press flow viscosity, i.e. about 8 g/min. or more, the composition exhibiting 1.6 MPa or more of a peak strength and about 2.5 J or more of energy absorption at a high speed impact test at 4 m/s according to DIN EN1465 at 30 minutes after being applied. 【課題】ガラスを車輌及び建物に接合する接着剤として有用な組成物であって、適切なプレスフロー粘度を有し、硬化速度と硬化物の耐衝撃性に優れる組成物の提供。【解決手段】ａ）１，０００を超えるＭｐにおいてＧＰＣによって求められる約２．５以下である平均多分散性指数及びプレポリマーの重量に基いて、１．２〜２．２％のフリーイソシアナートを有する１つ以上のイソシアナート官能性ポリエーテル系プレポリマー；ｂ）１５重量％未満の１つ以上の可塑剤；ｃ）イソシアナート成分とイソシアナート反応性基との反応のための、１つ以上の触媒；ｄ）組成物が、所定のプレスフロー粘度、すなわち、約８ｇ／分以上を示すような十分な量での１つ以上のフィラーを含む組成物で、ＤＩＮ ＥＮ１４６５に従う４ｍ／ｓでの高速度衝撃試験において１．６ＭＰａ以上のピーク強度及び約２．５Ｊ以上のエネルギー吸収を塗布後３０分で示す、組成物。【選択図】なし