High forming hard surface cleaning formulations

US6492317B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Charles O. Kerobo · Southfield, US
• Michael C. Welch · Woodhaven, US
• Richard J. Holland · Vancouver, CA
• Susanne M. Gessner · Ypsilanti, US
• Sonia J. Patterson · Detroit, US
• Chacji Thankachan · Beverly Hills, US

Key dates

• Filing date: May 19, 2000
• Grant date: Dec 10, 2002
• Expiry date: May 19, 2020

Classification

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

Abstract

Hard surface cleaning formulations include an associative thickener and a blend of at least two nonionic surfactants selected from the group consisting of ethoxylated alcohols and ethoxylated fatty acids. The formulations exhibit an advantageously high foam volume of at least about 150 cc when a 100 ml aqueous solution containing about 0.1 wt. % of the formulation is agitated at 2,500 rpm for a cumulative agitation period of about 1200 seconds. The formulations also exhibit satisfactory foam stability sufficient to clean at least about 25 plates (ASTM D4009-92). Preferably, the associative thickener is the reaction product of a C6 or greater epoxide compound with a polyoxyalkylene polyol. The ethoxylated alcohols and ethoxylated fatty acids each most preferably contain C8 to C18 carbon chains which are ethoxylated with between about 3 to about 20 moles of ethylene oxide. Especially preferred ethoxylated alcohols are fatty alcohols having oxyethylate moieties of the general formula R(OCH2CH2)xOH, wherein R is a C10 to C13 branched or straight chain alkyl group and x is within the range of about 4 to about 10.