Paste or printable ink compositions

摘要

A water-based paste or ink composition which comprises at least one powdered or flaked material and a transient carrier vehicle which is an aqueous medium including therein at least one associative thickener (as hereinbefore defined), the amounts of the powdered or flaked material, the vehicle and any optional additives included in the composition being chosen so that the composition has an appropriate rheology for it to be dispensed or printed and the transient carrier vehicle being removable from the composition by heating or pyrolysis to leave no or substantially no residues.