Method of automatic dishwashing

Patent metadata

Field	Value
Publication number	US-2016177231-A1
Application number	US-201514961931-A
Country	US
Kind code	A1
Filing date	Dec 8, 2015
Priority date	Dec 17, 2014
Publication date	Jun 23, 2016
Grant date	—

Abstract

A method of washing dishware and tableware in a dishwasher using a short program comprising the step of subjecting the ware to a main wash lasting less than 20 minutes wherein the washing liquor of the main wash comprises a low pH detergent composition, the composition having a pH as measured in 1% weight aqueous solution at 25° C. of from about 5 to about 7.5.

First claim

What is claimed is:

1 . A method of washing dishware and tableware in a dishwasher using a short program comprising the step of subjecting the ware to a main wash lasting less than 20 minutes wherein the washing liquor of the main wash comprises a low pH detergent composition, the composition having a pH as measured in 1% weight aqueous solution at 25° C. of from about 5 to about 7.5.

2 . A method according to claim 1 wherein the temperature of the main wash is 50° C. or less.

3 . A method according to claim 1 wherein the length of the main wash is 15 minutes or less.

4 . A method according to claim 1 wherein the composition is substantially builder-free.

5 . A method according to claim 1 wherein the composition comprises a buffer.

6 . A method according to claim 1 wherein the composition comprises an iron chelant.

7 . A method according to claim 1 wherein the composition comprises an iron chelant selected from the group consisting of siderophores, catechols, enterobactin, hydroxamates, hydroxypyridinones (or hydroxypyridine N-Oxides) and mixtures thereof.

8 . A method according to claim 1 wherein the composition is free or substantially free of bleach.

9 . A method according to claim 1 wherein the composition comprises an anionic surfactant.

10 . A method according to claim 1 wherein the composition comprises an anionic surfactant wherein the anionic surfactant comprises an alkyl ethoxy sulfate.

11 . A method according to claim 1 wherein the composition comprises a performance polymer.

12 . A method according to claim 1 wherein the composition comprises a performance polymer wherein the polymer comprises an alkoxylated polyalkyleneimine.

13 . A method according to claim 1 wherein the composition comprises a crystal growth inhibitor.

14 . A method according to claim 1 wherein the composition comprises a low temperature amylase.

15 . A method according to claim 1 wherein the composition comprises a protease selected from the group consisting of:
(i) a metalloprotease;
(ii) a cysteine protease;
(iii) a neutral serine protease;
(iv) an aspartate protease, and
(v) mixtures thereof.

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

17 . A method according to claim 1 wherein the composition is in a multi-compartment unit dose form comprising a water-soluble film or resin based on a polyvinylalcohol polymer or co-polymer.

18 . A method according to claim 1 wherein the composition is in a multi-compartment unit dose form comprising a water-soluble film and wherein the film has a thickness of 70 microns or less.

Assignees

• Procter & Gamble

Inventors

• Souter Philip Frank
• Brooker Alan Thomas
• Ure Colin
• Wilkinson Craig Adam
• Wardle Ian Robert

Classifications

• C11D17/042

  Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions · CPC title

• C11D3/28 Primary

  Heterocyclic compounds containing nitrogen in the ring · CPC title

• C11D3/386

  Preparations containing enzymes {, e.g. protease or amylase} · CPC title

• C11D11/00 Primary

  Special methods for preparing compositions containing mixtures of detergents · CPC title

• C11D2111/18

  Glass; Plastics · CPC title