# US 11,441,107 B2 · Powder and solid alkaline cleaning compositions and use thereof for removing greasy soils

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- Number: US 11,441,107 B2
- Document ID: US11441107B2
- Status: Granted
- Kind: B2
- Application number: 16/451,790
- Filed: 2019-06-25
- Published: 2019-12-26
- Granted: 2022-09-13
- Earliest claimed: 2018-06-26
- Assignees: Ecolab USA Inc.
- Applicants: Ecolab USA Inc.
- Inventors: Devon Beau Hammel; Grace Marie Rapp
- Web page: https://patentgrep.com/patent/US11441107B2

## CPC

- C11D 3/3761: {in solid compositions}
- C11D 7/265: {Carboxylic acids or salts thereof}
- B08B 3/08: the liquid having chemical or dissolving effect
- C11D 3/0047: {pH regulated compositions}
- C11D 3/044: {Hydroxides or bases}
- C11D 3/10: Carbonates {; Bicarbonates}
- C11D 7/06: Hydroxides
- C11D 7/12: Carbonates {bicarbonates}
- C11D 7/5004: {Organic solvents}
- C11D 17/0008: {aqueous liquid non soap compositions (C11D3/0015, C11D3/3947, C11D3/3956 take precedence)}
- C11D 17/0052: {Cast detergent compositions}
- C11D 17/06: Powder; Flakes; Free-flowing mixtures; Sheets
- C11D 2111/14: Hard surfaces
- C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL

## Abstract

Powder and cast solid alkaline cleaning compositions are disclosed. Powders and/or solidification of a highly alkaline detergent composition are provided including sodium hydroxide beads and/or liquid and sodium carbonate in combination with water conditioning polymers. Methods of cleaning for soil removal of baked on, greasy soils, including those found in ovens, are also disclosed.

## Claims

### Claim 1

A solid alkaline cleaning composition comprising:
at least one alkali metal hydroxide alkalinity source;
a first polycarboxylic acid polymer or salt or derivative thereof comprising a phosphorus end group according to the formula:
wherein R1 is a phosphino (—PH(═O)(OH)) or phosphono (—P(═O)(OH)2) end group, wherein m is an integer of 0 or larger, and wherein n is an integer of 2 or larger;
a second polycarboxylic acid polymer or salt or derivative thereof without a phosphorus end group and comprising a polyacrylic acid polymer and having a molecular weight of between about 2,500 g/mol and about 5,000 g/mol; and
from about 0.1 wt-% to about 5 wt-% of a processing aid comprising a propylene glycol and/or a hexylene glycol;
wherein the solid composition is free of sodium carbonate and surfactants.

### Claim 2 (depends on 1)

The solid composition of claim 1, wherein the alkali metal hydroxide comprises sodium hydroxide.

### Claim 3 (depends on 1)

The solid composition of claim 1, comprising two alkali metal hydroxide alkalinity sources.

### Claim 4 (depends on 3)

The solid composition of claim 3, wherein the first alkali metal hydroxide alkalinity source is a liquid and the second alkali metal hydroxide alkalinity source is a solid.

### Claim 5 (depends on 4)

The solid composition of claim 4, wherein the ratio of the first liquid alkali metal hydroxide alkalinity source to the second solid alkali metal hydroxide alkalinity source is from about 1:2 to about 1:6.

### Claim 6 (depends on 1)

The solid composition of claim 1, wherein the composition comprises between about 60 wt-% and about 95 wt-% of the alkali metal hydroxide alkalinity source, optionally between about 5 wt-% and about 20 wt-% of a first liquid alkali metal hydroxide alkalinity source and between about 40 wt-% and about 90 wt-% of a second solid alkali metal hydroxide alkalinity source, and between about 10 wt-% and about 40 wt-% of the first and second polycarboxylic acid polymers or salts or derivatives thereof.

### Claim 7 (depends on 1)

The solid composition of claim 1, wherein the solid composition at a temperature of 120° F. is dimensionally stable and has a growth exponent of less than 3%.

### Claim 8 (depends on 1)

The solid composition of claim 1, wherein the composition excludes additional functional ingredients.

### Claim 9 (depends on 1)

A method of cleaning comprising:
contacting a hard surface in need of cleaning with a use solution of the solid cleaning composition of claim 1; and
removing soils from the surface,
wherein the solid cleaning composition provides at least equivalent cleaning performance to a highly alkaline liquid cleaning composition.

### Claim 10 (depends on 9)

The method of claim 9, wherein the contacting is for a period of at least 2 hours.

### Claim 11 (depends on 9)

The method of claim 9, wherein the soils removed include greasy and/or fatty soils.

### Claim 12 (depends on 9)

The method of claim 9, wherein the method does not require use of a dispenser to provide the solid cleaning composition to the hard surface.