MOISTURE-REACTIVE ADHESIVE COMPOSITIONS WITH VERY LOW TEMPERATURE DEPENDENCY OF THE SHEAR MODULUS

摘要

A moisture-reactive adhesive composition is provided to cure without bubbles, to realize excellent mechanical characteristic value, and to show excellent adhesion effect to glass, ceramics, metal and paint. A moisture-reactive adhesive composition comprises (a) one or more dialdimines expressed as the following chemical formula (I); and (b) one or more polyurethane polymer P1 which is liquid at room temperature and contains an isocyanate group. The adhesive compound after being kept at room temperature and under 50% relative humidity for 7 days has the relative ratio of the shear modulus measured at 23°C to the shear modulus measured at -20 °C to be less than 1.7, especially, 1.5, preferably 1.4. In the chemical formula (I), A is C2-15 divalent aliphatic, cycloaliphatic or arylaliphatic hydrocarbon radical; and Y is an aldehyde radical according to the removal of O=CH.