| 摘要 |
<p>A process for preparing in-situ water-soluble zinc salts for use in as a base or additive in preparing an automatic dishwashing composition, said process is characterized by comprising the steps of: a) dispersing zinc oxide in water; b) combining an acid with said zinc oxide/water mixture; c) mixing said zinc oxide/water mixture and said acid until said zinc oxide is at least partially dissolved; d) maintaining said zinc oxide/water/acid mixture within an acidic pH range; and e) combining said zinc oxide/water/acid mixture with at least one rinse aid ingredient to form a rinse aid composition; wherein the order of addition of said process steps (a) and (b) is not critical.</p> |
