| abstract |
An aqueous dispersion of polyester resin which comprises (A) a crystalline polyester having a melting point in the range of from 70 to 200 DEG C and containing from 0.5 to 10% by mole of an aromatic dicarboxylic acid containing a metal sulfonate group as the polycarboxylic acid component, (B) a noncrystalline polyester having a softening point in the range of from 40 to 200 DEG C and containing from 0.5 to 10% by mole or an aromatic dicarboxylic acid containing metal sulfonate group as the polycarboxylic acid component, (C) a water-soluble organic compound having a boiling point in the range of from to 200 DEG C, and (D) water, the components (A), (B), (C) and (D) being incorporated in the dispersion in the following weight ratios: (1) A/B = 0-95/100-5 (2) A+B/C/D = 10-70/2-40/20-88 (3) 0.02 </= C/C+D </= 0.66 The aqueous dispersion of this invention has an excellent dispersibility in water and can provide coating layers having an excellent water resistance and weatherability and hence is useful for preparation of various laminated products, coating compositions, aqueous printing inks, aqueous binders for coating purposes and surface treating agents. |