Alkali metal bicarbonate particles with increased dissolution time

摘要

The invention relates to powder compositions comprising alkali metal bicarbonate particles and as additive. The invention also relates to a process for preparing alkali metal bicarbonate particles by spray-drying of an aqueous solution or suspension comprising 1 - 10 % by weight of alkali metal bicarbonate and a resin acid or a fatty acid as additive. The invention further relates to a process for preparing alkali metal bicarbonate particles by cogrinding the alkali bicarbonate in the presence of a resin acid as additive.