Detergent composition for removing polymerized food soils and method for cleaning polymerized food soils

A detergent composition comprising:

• (a) a first metal silicate having the formula:
• MxOy.mSiO2.nH2O
• wherein M is at least one of an alkali metal or a transition metal, x and y are independently integers of 1 to 3, m is greater than 0.2, and n is 0 or greater, and the weight ratio of SiO2 to MxOy is at least about 1.6;
• and
• (b) a second metal silicate having the formula:
• MxOy.mSiO2.nH2O
• wherein M is at least one of an alkali metal or a transition metal, x and y are independently integers of 1 to 3, m is greater than 0.2, and n is 0 or greater, and the weight ratio of SiO2 to MxOy is less than about 1.5;
• and
• (c) wherein the weight ratio of the first metal silicate to the second metal silicate is about 5:1 to about 75:1.

A method for cleaning polymerized food soil comprising:

• (a) applying a detergent composition to polymerized food soil on an oven interior surface, the detergent composition comprising:
• (i) about 2 wt. % to about 50 wt. % of a first metal silicate having the formula:
• MxOy.mSiO2nH2O
• wherein M is at least one of an alkali metal or a transition metal, x and y are independently integers of 1 to 3, m is greater than 0.2, and n is 0 or greater, and the weight ratio of SiO2 to MxOy is at least about 1.6;
• and
• (ii) about 0.5 wt. % to about 10 wt. % of a second metal silicate having the formula:
• MxOy.mSiO2.nH2O
• wherein M is at least one of an alkali metal or a transition metal, x and y are independently integers of 1 to 3, m is greater than 0.2, and n is 0 or greater, and the weight ratio of SiO2 to MxOy is less than about 1.5