| 摘要 |
Disclosed is an aqueous polyurethane dispersion having excellent dispersibility and productivity (specifically, a polyurethane dispersion, reactions of which can be easily controlled, and which can be supplied to the market with a stable quality). The aqueous polyurethane dispersion can provide a resin which has toughness and flexibility at the same time. Also disclosed is a method for producing the dispersion. The aqueous polyurethane dispersion uses a diphenylmethane diisocyanate, which contains 2,4'-diphenylmethane diisocyanate at a ratio not less than a specific ratio, and an alicyclic diisocyanate at a ratio within a specific range. |
