Two-part clean-in-place system

Claim 2

A two-part cleaning system, for use in preparing a dilute use solution, comprising: (a) a first concentrated solution comprising: (1) a hydroxide-based alkaline material, (2) a defoamer; (3) a solubilizer or emulsifier; (4) a water hardness control additive; and (b) a second concentrated solution in which free water is substantially absent, comprising: (1) an enzyme which is a protease; and (2) a carrier which is selected from the group consisting of alcohols, surfactants, polyols, glycols, and mixtures thereof.

Claim 3

The system of claim 1, wherein the alkaline material is present in an amount ranging from about 2.5 to about 7.5% by weight, based on the total weight of the first concentrated solution.

Claim 4

The system of claim 1, wherein the defoamer is present in an amount ranging from about 0.5 to about 5% by weight, based on the total weight of the first concentrated solution.

Claim 5

The system of claim 1, wherein the solubilizer or emulsifier is present in an amount ranging from about 1 to about 6% by weight, based on the total weight of the first concentrated solution.

Claim 6

The system of claim 1, wherein the water hardness control additive is present in an amount ranging from about 0 to 16% by weight, based on the total weight of the first concentrated solution.

Claim 7

A two part cleaning system for use in preparing a dilute use solution, comprising: (a) a first concentrated solution, comprising: (1) a hydroxide-based alkaline material which is present in an amount ranging from about 2.5 to about 7.5% by weight, based on the total weight of the first concentrated solution; (2) a polyoxyalkylene nonionic surfactant defoamer which is present in an amount ranging from about 0.5 to about 5% by weight, based on the total weight of the first concentrated solution; (3) a solubilizer or emulsifier selected from the group consisting of alkaline stable amphoteric surfactants, phosphate esters, fatty acids; modified polycarboxylate compounds, and mixtures thereof, the solubilizer or emulsifier being present in an amount ranging from about 1 to about 6%, by weight, based on the total weight of the first concentrated solution; (4) a water hardness control additive selected from the group consisting of phosphates, sodium ethylene diamine tetraacetic acid, polyacrylic acids, mixtures of polyacrylic acid and a salt of polyacrylic acid, and mixtures thereof, the water hardness control additive being present in an amount ranging from about 0 to about 16%, by weight based on the total weight of the first concentrated solution; and (b) a second concentrated solution in which free water is substantially absent, consisting essentially of: (1) an enzyme which is a protease, the enzyme being present in at least 10 ppm; (2) a carrier, selected from the group consisting of alcohols, surfactants, polyols, glycols, and mixtures thereof.

Claim 8

A two part cleaning system for use in preparing a dilute use solution, comprising: (a) a first concentrated solution, comprising: (1) a hydroxide-based alkaline material which is present in an amount ranging from about 2.5 to about 7.5% by weight, based on the total weight of the first concentrated solution; (2) a polyoxyalkylene nonionic surfactant defoamer which is present in an amount ranging from about 0.5 to about 5% by weight, based on the total weight of the first concentrated solution; (3) a solubilizer or emulsifier selected from the group consisting of alkaline stable amphoteric surfactants, phosphate esters, fatty acids; modified polycarboxylate compounds, and mixtures thereof, the solubilizer or emulsifier being present in an amount ranging from about 1 to about 6%, by weight, based on the total weight of the first concentrated solution; (4) a water hardness control additive selected from the group consisting of phosphates, sodium ethylene diamine tetraacetic acid, polyacrylic acids, mixtures of polyacrylic acid and a salt of polyacrylic acid, and mixtures thereof, the water hardness control additive being present in an amount ranging from about 0 to about 16%, by weight based on the total weight of the first concentrated solution; and (b) a second concentrated solution in which free water is substantially absent, consisting essentially of: (1) an enzyme which is a protease, the enzyme being present in at least 10 ppm; (2) a carrier, selected from the group consisting of alcohols, surfactants, polyols, glycols, and mixtures thereof.