| abstract |
The present invention relates to a modified polyester polyol, the main chain of the modified polyester polyol comprises at least one segment containing ether bonds and side chain hydroxyl groups, and the weight average weight of the modified polyester polyol The molecular weight (Mw) is 10,000 to 100,000 g/mol, the polydispersity index (PDI) is not higher than 25, and the hydroxyl value is 2 to 40 mgKOH/g. The modified polyester polyol prepared by the present invention can form a network structure with a curing agent to maintain stability, thus can improve adhesion and heat and humidity resistance, and is suitable as an adhesive. |