Anhydrous autodish formulation

Patent metadata

Field	Value
Publication number	US-11680227-B2
Application number	US-202217896503-A
Country	US
Kind code	B2
Filing date	Aug 26, 2022
Priority date	May 23, 2018
Publication date	Jun 20, 2023
Grant date	Jun 20, 2023

Abstract

A method of washing glassware is provided including: providing automatic dishwashing apparatus; providing soiled glassware; placing soiled glassware in automatic dishwashing apparatus; providing wash water; providing rinse water; selecting anhydrous mixed powder or mixed granule comprising: 2.5-5 wt % of oxidized maltodextrin, wherein oxidized maltodextrin has Degree of Oxidation of 0.4-1.7; 10-25 wt % of amino acid based builder; 20-75 wt % of additional builder, wherein additional builder includes at least one of sodium citrate, sodium carbonate and sodium percarbonate; 2.5-7.5 wt % of bleach activator; 0.5-10 wt % of nonionic surfactant; 0.5-1 wt % of phosphonate; 1-6 wt % of enzyme; 5-15 wt % of filler; and <1 wt % water; placing selected anhydrous mixed powder or mixed granule in automatic dishwashing apparatus; contacting selected anhydrous mixed powder or mixed granule with wash water to form combination; contacting soiled glassware with combination to provide treated glassware; and then contacting treated glassware with rinse water to provide cleaned glassware.

First claim

We claim:

1. A method of washing glassware, comprising:
providing an automatic dishwashing apparatus;
providing soiled glassware;
placing the soiled glassware in the automatic dishwashing apparatus;
providing a wash water;
providing a rinse water;
selecting an anhydrous mixed powder or mixed granule consisting of:
2.5 to 5 wt % of oxidized maltodextrin, wherein the oxidized maltodextrin has a Degree of Oxidation, DO, of 0.4 to 1.7;
10 to 25 wt % of an amino acid based builder, selected from the group consisting of nitrilotriacetic acid; ethylenediaminetetraacetic acid; diethylenetriaminepentaacetic acid; glycine-N,N-diacetic acid; methyl glycine-N,N-diacetic acid; 2-hydroxyethyliminodiacetic acid; glutamic acid-N,N-diacetic acid; 3-hydroxy-2,2′-imonodissuccinate; S,S-ethylenediaminedisuccinate aspartic acid-diacetic acid; N,N′-ethylene diamine disuccinic acid; iminodisuccinic acid; aspartic acid; aspartic acid-N,N-diacetic acid; beta-alaninediacetic acid; polyaspartic acid; salts thereof and mixtures thereof;
20 to 75 wt % of an additional builder, wherein the additional builder is at least one of sodium citrate, sodium carbonate and sodium percarbonate;
2.5 to 7.5 wt % of a bleach activator, wherein the bleach activator is tetraacetylethylenediamine;
0.5 to 10 wt % of a surfactant, wherein the surfactant is a nonionic surfactant;
0.5 to 1 wt % of a phosphonate;
1 to 6 wt % of an enzyme, wherein the enzyme is a mixture of a protease and an amylase;
5 to 15 wt % of a filler, wherein the filler is sodium sulfate;
<1 wt % water; and
optionally, an additive selected from the group consisting of an alkaline source, a bleaching agent, a bleach catalyst, a foam suppressant, a coloring agent, a fragrance, a silicate, an antibacterial agent, a filler and mixtures thereof;

placing the selected anhydrous mixed powder or mixed granule in the automatic dishwashing apparatus;
contacting the selected anhydrous mixed powder or mixed granule with the wash water to form a combination;
contacting the soiled glassware with the combination to provide a treated glassware; and
then contacting the treated glassware with the rinse water to provide a cleaned glassware.

2. The method of washing glassware according to claim 1 , wherein the oxidized maltodextrin has a weight average molecular weight of 2,500 to 6,000 Daltons.

3. The method of washing glassware according to claim 2 , wherein at least 60 mol % of the C6 carbons in the oxidized maltodextrin have been oxidized to a carboxyl group.

4. The method of washing glassware according to claim 3 , wherein less than 30 mol % of the C2 and C3 carbons in the oxidized maltodextrin have been oxidized to a carboxyl group.

5. The method of washing glassware according to claim 4 , wherein the oxidized maltodextrin has ≥0.0001 wt % of at least one of 2,2,6,6-tetramethylpiperidinyloxy or 2,2,6,6-tetramethylpiperidine-1-oxyl.

6. The method of claim 1 ,
wherein the alkaline source is selected from the group consisting of an alkali metal carbonate, and alkali metal hydroxide and mixtures thereof;
wherein the bleaching agent is selected from the group consisting of sodium percarbonate, sodium perborate and mixtures thereof; and
wherein the bleach catalyst is selected from the group consisting of manganese(II) acetate, cobalt(II) chloride, bis(TACN)magnesium trioxide diacetate and mixtures thereof.

7. The method of claim 2 ,
wherein the alkaline source is selected from the group consisting of an alkali metal carbonate, and alkali metal hydroxide and mixtures thereof;
wherein the bleaching agent is selected from the group consisting of sodium percarbonate, sodium perborate and mixtures thereof; and
wherein the bleach catalyst is selected from the group consisting of manganese(II) acetate, cobalt(II) chloride, bis(TACN)magnesium trioxide diacetate and mixtures thereof.

8. The method of claim 3 ,
wherein the alkaline source is selected from the group consisting of an alkali metal carbonate, and alkali metal hydroxide and mixtures thereof;
wherein the bleaching agent is selected from the group consisting of sodium percarbonate, sodium perborate and mixtures thereof; and
wherein the bleach catalyst is selected from the group consisting of manganese(II) acetate, cobalt(II) chloride, bis(TACN)magnesium trioxide diacetate and mixtures thereof.

9. The method of claim 4 ,
wherein the alkaline source is selected from the group consisting of an alkali metal carbonate, and alkali metal hydroxide and mixtures thereof;
wherein the bleaching agent is selected from the group consisting of sodium percarbonate, sodium perborate and mixtures thereof; and
wherein the bleach catalyst is selected from the group consisting of manganese(II) acetate, cobalt(II) chloride, bis(TACN)magnesium trioxide diacetate and mixtures thereof.

10. The method of claim 5 ,
wherein the alkaline source is selected from the group consisting of an alkali metal carbonate, and alkali metal hydroxide and mixtures thereof;
wherein the bleaching agent is selected from the group consisting of sodium percarbonate, sodium perborate and mixtures thereof; and
wherein the bleach catalyst is selected from the group consisting of manganese(II) acetate, cobalt(II) chloride, bis(TACN)magnesium trioxide diacetate and mixtures thereof.

Assignees

• Dow Global Technologies Llc
• Rohm & Haas

Inventors

• Wang Lin
• Ziebarth Robin P
• Belowich Matthew E
• Backer Scott
• Mercando Paul
• He Yiyong

Classifications

• C11D3/3942

  Inorganic per-compounds (C11D3/3902 takes precedence) · CPC title

• C11D3/3902

  combined with specific additives · CPC title

• C11D3/22

  Carbohydrates or derivatives thereof · CPC title

• C11D3/33

  Amino carboxylic acids · CPC title

• C11D3/2086

  Hydroxy carboxylic acids-salts thereof · CPC title