Detergent composition

Patent metadata

Field	Value
Publication number	US-11859156-B2
Application number	US-202117161713-A
Country	US
Kind code	B2
Filing date	Jan 29, 2021
Priority date	Feb 4, 2020
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

Abstract

An automatic dishwashing detergent composition can include an alkoxylated polyalkyleneimine said alkoxylated polyalkyleneimine including a polyalkyleneimine backbone, alkoxy chains and quaternization groups wherein the alkoxylated polyalkyleneimine has a degree of quaternization of from about 40% to about 98% and wherein the polyalkyleneimine backbone represents from about 1% to about 40% by weight of the alkoxylated polyalkyleneimine and the alkoxy chains represent from about 60% to about 99% by weight of the alkoxylated polyalkyleneimine; percarbonate bleach; an amylase and a protease; and wherein the composition is free of bleach activator and bleach catalyst, or wherein the composition is free of bleach activator and includes manganese bleach catalyst.

First claim

What is claimed is:

1. An automatic dishwashing detergent composition comprising:
a) from about 0.5 wt % to about 5 wt % of a quaternized alkoxylated polyalkyleneimine comprising a polyalkyleneimine backbone, alkoxy chains and quaternization groups wherein the quaternized alkoxylated polyalkyleneimine has a degree of quaternization of from about 40% to about 98% and wherein:
i) the polyalkyleneimine backbone represents from about 1% to about 40% by weight of the quaternized alkoxylated polyalkyleneimine;
ii) the alkoxy chains represent from about 60% to about 99% by weight of the quaternized alkoxylated polyalkyleneimine, and wherein the alkoxy chains are selected from polyoxyethylene chains having an average of from about 1 to about 50 ethoxy units, polyoxypropylene chains having an average of from about 0 to about 30 propoxy units and mixtures thereof, and wherein said polyalkyleneimine backbone has a weight-average molecular weight of 600 to 5000 g/mol;

b) from about 5 wt % to about 25 wt % of percarbonate bleach;
c) from about 0.05 to about 10 mg of active amylase/g of the composition and from about 0.05 to about 20 mg of active protease/g of the composition; and
wherein the composition is free of bleach activator and bleach catalyst, or wherein the composition is free of bleach activator and comprises manganese bleach catalyst.

2. A composition according to claim 1 further comprising a complexing agent.

3. A composition according to claim 1 wherein the composition is free of phosphate builder.

4. A composition according to claim 1 wherein the composition further comprises a dispersant polymer.

5. A composition according to claim 1 further comprising:
from about 0.5 to about 20% by weight of the composition of carbonate;
from about 0.5 to about 10% by weight of the composition of HEDP;
from about 5 to about 40% by weight of the composition of a complexing agent;
from about 1 to about 5% by weight of the composition of a dispersant agent;
from about 1 to about 10% by weight of the composition of a non-ionic surfactant; and wherein:
the percarbonate bleach comprises sodium percarbonate.

6. A composition according to claim 1 wherein the composition is in unit dose form.

7. A method of cleaning cookware/tableware in an automatic dishwashing machine comprising the step of subjecting the cookware/tableware to a washing liquor comprising the composition according to claim 1 .

Assignees

• Procter & Gamble

Inventors

• Fuller Linsey Sarah
• Sterry Robert William John

Classifications

• C11D3/3792 Primary

  Amine oxide containing polymers · CPC title

• C11D1/34

  Derivatives of acids of phosphorus · CPC title

• C11D1/66

  Non-ionic compounds {(C11D1/002, C11D1/004, C11D1/008 take precedence)} · CPC title

• C11D3/10

  Carbonates {; Bicarbonates} · CPC title

• C11D3/361

  Phosphonates, phosphinates or phosphonites · CPC title