Polyurethane dispersion and coating material

Abstract

This polyurethane dispersion contains water, a polyurethane resin that is dispersed in water, and a water-insoluble compound that is sealed in the polyurethane resin. The water-insoluble compound has an activity against micro-hazardous substances. The polyurethane resin contains an anionic group and the acid value of the polyurethane resin is 8-25 mgKOH / g, and / or the polyurethane resin contains a polyoxyethylene group and the oxyethylene content ratio of the polyurethane resin is 8-20 mass%.