Automatic dishwashing detergent composition

Patent metadata

Field	Value
Publication number	US-11459528-B2
Application number	US-202016912726-A
Country	US
Kind code	B2
Filing date	Jun 26, 2020
Priority date	Jul 2, 2019
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

An automatic dishwashing cleaning composition comprising:a) a mixed builder system comprising soluble builder and crystalline silicate wherein the soluble builder comprises a complexing agent, a phosphonate and a dispersant polymer and wherein the level of each soluble builder in the composition is:a1) from 15% to 40% by weight of the composition of the complexing agent;a2) from 2% to 7% by weight of the composition of the phosphonate; anda3) from 1% to 7% by weight of the composition of the dispersant polymer wherein the soluble builder and the crystalline silicate are in a weight ratio of from 8:1 to 15:1b) a bleaching system comprising bleach, a bleach catalyst and a bleach activator; andc) from 0% to 20% by weight of the composition of carbonate.

First claim

What is claimed is:

1. An automatic dishwashing cleaning composition comprising:
a) from about 20% to about 40% by weight of the composition of methylglycinediacetic acid;
b) from about 2% to about 6% by weight of the composition of 1-hydroxyethane 1,1-diphosphonic acid;
c) from about 2% to about 6% by weight of a dispersant polymer comprising sulfonate monomers;
d) from about 2% to about 6% by weight of the composition of a crystalline silicate having the formula Na 2 Si 2 O 5 , wherein the total amount of the methylglycinediacetic acid, hydroxyethane 1,1-diphosphonic acid, and dispersant polymer;
e) a bleaching system comprising from about 8% to about 30% by weight of the composition of sodium percarbonate; from about 0.001% to about 1% by weight of the composition of a bleach catalyst, and from about 0.5% to about 5% by weight of the composition of tetraacetylethylene diamine;
f) from about 0% to about 20% by weight of the composition of carbonate;
g) a granulate enzyme comprising sodium sulfate and an enzyme selected from the group consisting of amylase, protease and mixtures thereof in a weight ratio of sodium sulfate to enzyme of greater than 4:1.

2. A composition according to claim 1 wherein the bleach catalyst comprises a manganese catalyst.

3. A composition according to claim 1 further comprising non-ionic surfactant.

4. A composition according to claim 1 further comprising a cationic polymer wherein the cationic polymer comprises in copolymerized form from:
i. 60% to 99% by weight of the cationic polymer of at least one monoethylenically unsaturated polyalkylene oxide monomer of the formula I (monomer (A))

in which the variables have the following meanings:
X is —CH2- or —CO—, if Y is —O—;
X is —CO—, if Y is —NH—;

Y is —O— or —NH—;
R1 is hydrogen or methyl;
R2 are identical or different C2-C6-alkylene radicals;
R3 is H or C1-C4 alkyl;
n is an integer from 3 to 100,
ii. from 1 to 40% by weight of the cationic polymer of at least one quaternized nitrogen-containing monomer, selected from the group consisting of at least one of the monomers of the formula IIa to IId (monomer (B))

in which the variables have the following meanings:
R is C1-C4 alkyl or benzyl;
R′ is hydrogen or methyl;
Y is —O— or —NH—;
A is C1-C6 alkylene;
X− is halide, C1-C4-alkyl sulfate, C1-C4-alkylsulfonate and C1-C4-alkyl carbonate.
iii. from 0 to 15% by weight of the cationic polymer of at least one anionic monoethylenically unsaturated monomer (monomer (C)), and
iv. from 0 to 30% by weight of the cationic polymer of at least one other nonionic monoethylenically unsaturated monomer (monomer (D)),
and the cationic polymer has a weight average molecular weight (Mw) from about 2,000 to about 500,000.

5. A water-soluble automatic dishwashing cleaning pouch comprising a water-soluble enveloping material and a composition according to claim 1 .

6. A pouch according to claim 5 wherein at least part of the composition is in the form of loose powder.

7. A pouch according to claim 5 wherein the weight of the pouch is from about 15 to about 20 grams.

8. A composition according to claim 1 , wherein the composition has from greater than 0% to less than about 2% of carbonate by weight of the composition.

9. A composition according to claim 1 , wherein the granulate enzyme comprises the sodium sulfate and the enzyme in a weight ratio of 5:1 and 20:1.

10. A method of removing tea stains from tableware in a dishwasher comprising the steps of:
i) providing the stained tableware;
ii) treating the dishware with a wash liquor comprising water having from about 250 ppm to about 450 ppm of bicarbonate and a cleaning composition according to claim 1 ; and
iii) optionally rinsing the dishware.

Assignees

• Procter & Gamble

Inventors

• Aksoy Abaci Nilgun Esin
• Delplancke Patrick Firmin August
• Lukic Nevena
• Verstraeten William Mario Laurent

Classifications

• C11D3/33

  Amino carboxylic acids · CPC title

• C11D3/378

  (Co)polymerised monomers containing sulfur, e.g. sulfonate · CPC title

• C11D3/10

  Carbonates {; Bicarbonates} · CPC title

• C11D3/38609

  Protease or amylase in solid compositions only · CPC title

• C11D3/2086

  Hydroxy carboxylic acids-salts thereof · CPC title