| 摘要 |
The present invention provides: (1) a polysaccharide derivative having hydrophilic functional groups and nitrate groups per one repeating unit in the following range: 0.2</=X</=1.5, 0.4</=Y</=2.2, X+Y<3; wherein X and Y represent the number of hydrophilic functional groups and nitrate groups, respectively; (2) the neutralized polysaccharide derivative; (3) the composition used as a binder containing the neutralized polysaccharide and water; and (4) the composition used as a vehicle containing the neutralized polysaccharide, a resin, an organic solvent and water. The vehicle composition has excellent properties such as drying characteristic, pigment dispersibility, compatibility with water soluble resins and thixotropic property, and it can form a clear continuous film having excellent heat resistance and blocking resistance.
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