| 摘要 |
PROBLEM TO BE SOLVED: To obtain a curing agent providing an aqueous one-pack adhesive that has stability and develops thermal resistance and water resistance after long storage in the form of a mixture of polyethyleneimine and carbodiimide. SOLUTION: This curing agent providing an aqueous one-pack adhesive that contains an aqueous dispersion of (non)ionic polyurethane and vinyl and/or acrylic polymers comprises (A) polyethyleneimine, and (B) carbodiimide as a mixture of them preferably in a quantity of 1-10 pts.wt. of component A and 1-12 pts.wt. of component B to 100 pts. by dry weight of the total of the (non)ionic polyurethane and vinyl and/or acrylic polymer. Preferably the weight- average molecular weight of component A is 500,000-1,000,000. Using this curing agent, the aqueous one-can adhesive can be preferably used when a polyvinyl film is laminated on to a wood plate, etc. |
