Aqueous polyurethane resin dispersion and method for producing same, paint, film arrangement, and structure
AssigneeDainichiseika Color & Chemicals Mfg. Co., Ltd.
InventorsYusuke Suzuki, Kazuya Sasaki, Tatsuzo Murakawa
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Abstract
An aqueous polyurethane resin dispersion containing polyurethane resin particles dispersed in water, which contains a nonvolatile component in an amount of 45% by mass or more and in which the polyurethane resin particles contain a polyol component and an isocyanate component, at least 10 mol % or more of the isocyanate component is a linear aliphatic isocyanate component having 4 to 10 carbon atoms, and the volume-average particle size of the polyurethane resin particles is 0.05 to 5 μm.
Claims18
An aqueous polyurethane resin dispersion, comprising polyurethane resin particles dispersed in water, which contains a nonvolatile component in an amount of 45% by mass or more,
- wherein the polyurethane resin particles comprise a polyol component, an isocyanate component, and a diamine component,
- the polyurethane resin particles comprise a reaction product of the polyol component, the isocyanate component, and the diamine component,
- at least 50 mol % or more of the isocyanate component comprises 1,5-pentamethylene diisocyanate, and
- the polyurethane resin particles have a volume-average particle size determined by dynamic light-scattering of from 0.05 to 5 μm.
Dependencies are inferred from the claim text.