Detergent composition for removing polymerized food soils and method for cleaning polymerized food soils
A detergent composition includes about 2 wt. % to about 50 wt. % of a first metal silicate having the formula: M x O y .m SiO 2 .n H 2 O 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 SiO 2 to M x O y is at least about 1.6, and about 0.5 wt. % to about 10 wt. % of a second metal silicate having the formula: M x O y .m SiO 2 .n H 2 O 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 SiO 2 to M x O y is less than about 1.5. The detergent composition can be used to clean the interior surface of an oven. A method for cleaning polymerized food soil is provided.
1 . A detergent composition comprising:
(a) about 2 wt. % to about 50 wt. % of a first metal silicate having the formula:
M x O y .m SiO 2 .n H 2 O
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 SiO 2 to M x O y is at least about 1.6; and
(b) about 0.5 wt. % to about 10 wt. % of a second metal silicate having the formula:
M x O y .m SiO 2 .n H 2 O
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 SiO 2 to M x O y is less than about 1.5
2 . A detergent composition according to claim 1 , wherein the detergent composition comprises about 5 wt. % to about 45 wt. % of the first metal silicate and about 0.75 wt. % to about 7 wt. % of the second metal silicate.
3 . A detergent composition according to claim 1 , wherein the weight ratio of the first metal silicate to the second metal silicate is about 5:1 to about 75:1.
4 . A detergent composition according to claim 1 , further comprising about 0.5 wt. % to about 10 wt. % of a surfactant.
5 . A detergent composition according to claim 4 , wherein the surfactant comprises at least one of an amphoteric surfactant or a nonionic surfactant.
6 . A detergent composition according to claim 4 , wherein the surfactant comprises at least one of aliphatic alkoxylates, aryl alkoxylates, aralkyl alkoxylates, ethylene oxide-propylene oxide copolymers, ethylene oxide-butylene oxide copolymers, fatty amides, fatty esters, polyglycosides, silicone polymers, or mixtures thereof.
7 . A detergent composition according to claim 4 , wherein the surfactant comprises at least one of amide oxides, betaines, sultaines, amphoacetates, imidazolines, propionates, amino acid derivatives, silicone derivatives, or mixtures thereof.
8 . A detergent composition according to claim 1 , further comprising about 0.5 wt. % to about 10 wt. % organic solvent.
9 . A detergent composition according to claim 8 , wherein the organic solvent comprises at least one of glycerine, glycol, sorbitol, aliphatic glycol ether, aryl glycol ether, aralkyl glycol ether, benzyl alcohol, ester, or mixture thereof.
10 . A detergent composition according to claim 8 , wherein the organic solvent comprises at least one of propylene glycol, ethylene glycol, hexylene glycol, or mixture thereof.
11 . A detergent composition according to claim 1 , wherein the composition comprises about 30 wt. % to about 95 wt. % water.
12 . A detergent composition according to claim 1 , wherein the first alkali metal silicate has a value of m of at least about 2.0.
13 . A detergent composition according to claim 1 , wherein the second alkali metal silicate has an m value of less than about 1.2.
14 . A detergent composition comprising:
(a) a first metal silicate having the formula:
M x O y .m SiO 2 .n H 2 O
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 SiO 2 to M x O y is at least about 1.6; and
(b) a second metal silicate having the formula:
M x O y .m SiO 2 .n H 2 O
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 SiO 2 to M x O y 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.
15 . 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:
M x O y .m SiO 2 n H 2 O
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 SiO 2 to M x O y is at least about 1.6; and
(ii) about 0.5 wt. % to about 10 wt. % of a second metal silicate having the formula:
M x O y .m SiO 2 .n H 2 O
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 SiO 2 to M x O y is less than about 1.5
16 . A method according to claim 15 , further comprising rinsing the detergent composition from the oven interior surface using water.
17 . A method according to claim 15 , wherein the step of applying comprises applying a foam or gel of the detergent composition to the polymerized food soil.