Water-dispersible ester resin containing a moiety of polyacid or bivalent alcohol containing a sulfo group
AssigneeDynamit Nobel Aktiengesellschaft
InventorGerhard Schade
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Abstract
A water-dispersible polycondensation polyester resin having moieties of at least one polycarboxylic acid and at least one polyvalent alcohol having a terminal hydroxyl group, said polyester having a molecular weight between 300 and 3,000, a softening point between 30.degree. and 60.degree. C, said polyester additionally containing an amount of 1 to 5 mole percent based upon the moieties of polycarboxylic acid or polyvalent alcohol; moieties of an alkali metal-sulfo group containing polycarboxylic acid or polyvalent alcohol; aqueous dispersions of such water-dispersible polyester resin and the use of such water dispersions as baked upon lacquer compositions.
Claims24
A water-dispersible polycondensation polyester resin having moieties of at least one dicarboxylic acid and at least one bivalent alcohol having terminal hydroxyl groups, said polyester having a molecular weight between 300 and 3,000, a softening point between 30.degree. and 60.degree. C, a hydroxyl number of at least 35 mg KOH/g, an acid number of less than 5 wherein said polyester additionally contains an amount of 1 to 5 mole percent, based upon the moieties of polycarboxylic acid or bivalent alcohol, moieties of an alkali metal - sulfo group containing polycarboxylic acid or bivalent alcohol.
Dependencies are inferred from the claim text.