| 摘要 |
<p>A polyester-based silane curable polyurethane is provided to show low viscosity, to be processed at the ambient temperature, and to ensure strong adhesion power and high extensibility in curing. An alkoxysilane group-containing polyurethane is represented by the chemical formula 1. In the formula, PIC is a diisocyanate residue reduced with an isocyanate radical; PES is generated from the mixture of adipic acid and butanediol or hexanedio and neopentyl glycol in a ratio of respective 90 weight% or more(based on an acid and alcohol) and 20 weight% or more(based on mixture) and is a residue of polyester polyol having 2-3 OH groups which is reduced with the OH group and has the number average molecular weight(Mn) of 500 g/mole - 2500 g/mole; a is 0 or 1, b is 0 or 5 and c is 1 or 2.</p> |
