Use of amino carboxylate for enhancing metal protection in alkaline detergents

摘要

The invention includes ware detergent compositions which prevent buildup of precipitates and also surprisingly provides significant metal protection of items exposed to alkaline detergent composition. According to the invention alkaline ware detergents may include an effective amount of amino carboxylate. Surprisingly, detergents which included amino carboxylate also provided significant metal protection against corrosion, even when traditional corrosion inhibiting components are reduced.

主权项

1. A solid alkaline detergent composition comprising:
a) from about 35 wt. % to about 90 wt. % of a carbonate alkalinity source; b) from about 0.3 wt. % to about 10 wt. % of a chelant, wherein said chelant comprises citrate or citric acid; c) from about 1 wt. % to about 7.5 wt. % of a surfactant; d) a corrosion inhibitor selected from the group consisting of phosphonocarboxylic acids, phosphonates, phosphates, polymers, and mixtures thereof; e) from about 15 wt. % to 33.5 wt. % of a metal protecting component comprising:
i) from about 15 wt. % to about 30 wt. % of a silicate; andii) an amino carboxylate, and f) from about 4 wt. % to about 20 wt. % water, wherein the solid detergent is a solid selected from the group consisting of a cast solid, a pressed solid, or an extruded solid.