Process for cleaning dishware

US9938489B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Holger Tuerk · Ludwigshafen, DE
• Heike Weber · Mannheim, DE
• Juergen Detering · Schifferstadt, DE
• Gazi Tuerkoglu · Ludwigshafen, DE

Key dates

• Filing date: Jun 24, 2014
• Grant date: Apr 10, 2018
• Expiry date: Oct 27, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D2111/14
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Process for cleaning dishware soiled with fatty residue, characterized in that said process is carried out at a temperature in the range of from 45 to 65° C. and using at least one formulation, comprising (A) in the range of from 1 to 50% by weight of at least one complexing agent, selected from the alkali metal salts of citric acid, aminocarboxylic acids and from sodium tripolyphosphate, (B) in the range of from 2 to 8% by weight of at least one non-ionic surfactant of general formula (I) R1—CH(OH)—CH2—O-(AO)x—R2 (I) (C) in the range of from 0.25 to less than 4% by weight of a copolymer, being obtained from copolymerizing the following comonomers (a) at least one comonomer selected from ethylenically unsaturated C3-C4-carboxylic acids and ethylenically unsaturated C4-C8-dicarboxylic acids or their respective anhydrides, (b) at least one comonomer selected from isobutene, diisobutene, C2-C28-a-olefins, and C12-C24-alkyl esters of (meth)acrylic acid, (c) optionally, at least one further comonomer selected from non-ionic comonomers, the integers being defined as follows: R1 being selected from C4-C30-alkyl, straight-chain or branched, and from C4-C30-alkenyl, straight-chain or branch…