Non-caustic cleaning composition comprising peroxygen compound, meta/sesqui-silicate, chelate and method of making same in free-flowing, particulate form
AssigneeCharvid Limited Liability Co.
InventorCharles Bullick Talley
Life of this patent
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Abstract
The present invention discloses an alkaline cleaning composition for cleaning heavily soiled metal surfaces such as food fryers, baking pans, high temperature pasteurizers, and beer kettles, ceramic surfaces such as restaurant grade ceramic china plates and platters, and plastic surfaces. The cleaning composition is noncaustic and includes a peroxygen compound, a chelate, and a metasilicate and/or sesquisilicate. A preferred cleaning composition further includes a surfactant and hydrated builder.
Claims31
A cleaning composition, comprising:
- (a) from about 25% to about 40% by weight of a peroxygen compound;
- (b) at least about 15% by weight of a silicate that is at least one of a metasilicate or a sesequisilicate, wherein the silicate includes an anhydrous silicate and the hydrated counterpart of the anhydrous silicate;
- (c) at least about 2% by weight of a chelate that is selected from the group consisting of a carboxylic acid and salts thereof, a phosphonic acid and salts thereof, and mixtures thereof.
A method for forming a free-flowing, particulate cleaning composition, comprising:
- (a) contacting water, a surfactant, and an anhydrous builder to form an intermediate composition including a hydrated builder formed from at least a portion of the anhydrous builder wherein the duration of the contacting step (a) is sufficient for substantially all of the water to react with the anhydrous builder;
- and
- (b) thereafter contacting the intermediate composition with a peroxygen compound, a silicate that is at least one of a metasilicate or a sesquisilicate, and a chelate having a different chemical composition than the anhydrous builder and hydrated builder and the silicate to form a free-flowing, particulate cleaning composition, wherein the cleaning composition includes from about 0.1 to about 0.5 wt % water, the water being selected from the group consisting of free water, water of hydration and mixtures thereof.
A method for forming a free-flowing particulate cleaning composition, comprising:
- (a) contacting water, a surfactant, and an anhydrous silicate to form an intermediate composition including a hydrated silicate formed from at least a portion of the anhydrous silicate, wherein the anhydrous silicate is at least one of an anhydrous metasilicate or a sesquisilicate;
- and
- (b) thereafter contacting the intermediate composition with a chelate and peroxygen compound to form the free-flowing particulate cleaning composition.
A liquid cleaner, comprising:
- (a) a peroxygen compound;
- (b) a silicate that is at least one of a metasilicate or a sesquisilicate;
- (c) a chelate that is selected from the group consisting of a carboxylic acid and salts thereof, a phosphonic acid and salts thereof, and mixtures thereof;
- (d) a surfactant;
- (e) a builder selected from the group consisting of a sulfate, a phosphate, a carbonate, and mixtures thereof;
- and
- (f) a carrier liquid, wherein the liquid cleaner has a pH ranging from about pH 8 to pH 12.
A method for forming a free-flowing, particulate cleaning composition, comprising:
- (a) contacting water, a surfactant, and an anhydrous builder to form an intermediate composition including a hydrated builder formed from at least a portion of the anhydrous builder wherein the duration of the contacting step (a) is sufficient for substantially all of the water to react with the anhydrous builder;
- and
- (b) thereafter contacting the intermediate composition with a peroxygen compound, a silicate that is at least one of a metasilicate or a sesquisilicate, and a chelate having a different chemical composition than the anhydrous builder and hydrated builder and the silicate to form a free-flowing, particulate cleaning composition, wherein the molar ratio of anhydrous builder to water ranges from about 50:1 to about 175:1.
A liquid cleaner, comprising:
- (a) a peroxygen compound;
- (b) a silicate that is at least one of a metasilicate or a sesquisilicate;
- (c) a chelate that is selected from the group consisting of a carboxylic acid and salts thereof, a phosphonic acid and salts thereof, and mixtures thereof;
- (d) a surfactant;
- and
- (e) a carrier liquid, wherein the liquid cleaner has a pH ranging from about pH 8 to pH 12, wherein the carrier liquid comprises from about 92 to about 99% by weight of the liquid cleaner.
Dependencies are inferred from the claim text.