Patent ID: 8263540

Claim:
A detergent composition comprising: (a) an alkaline source in an amount effective to provide a use composition having a pH of at least about 8 and obtained by diluting the warewashing detergent composition with water; said alkaline source in an amount of from about 35 wt. % to about 55 wt. % (b) a corrosion inhibitor component in an amount of from about 20 wt. % to about 35 wt. % said amount sufficient for reducing corrosion of aluminum or aluminum containing alloys, the corrosion inhibitor component consisting of polyacrylic and polymaleic homopolymers or their salts in a wt. % ratio of about greater than 1:1 polyacrylic homopolymer to polymaleic homopolymer (c) a surfactant in an amount of from about 1 wt. % to about 5 wt. % and (d) water in an amount from about 10 wt % to about 60 wt. %.