Aqueous cleaning composition for cleaning substrates and method

Details Aqueous cleaning composition for cleaning substrates and method Aqueous cleaning composition for cleaning substrates and method

1997-05-06

1999-02-02

Lieberman, Paul

Cleaning compositions for solid surfaces, auxiliary compositions

Cleaning compositions or processes of preparing

Liquid composition

510245, 510254, 510433, 510435, 510499, 134 38, 134 42, C11D 172, C11D 194, C11D 310

Patent

active

058665285

ABSTRACT:
An alkaline aqueous cleaning composition for cleaning a substrate contaminated with industrial-type soil contaminants contains (i) an aqueous portion and (ii) an active-ingredient portion composed of (A) an alkalinity-providing agent and (B) a surfactant mixture containing (a) an active concentration of an ethoxylated C.sub.12-14 alkanol surfactant having an HLB value at 25.degree. C. of from 8 to 12 and (b) an active concentration of at least one aminocarboxylic acid surfactant of the general formula R--N(H)--R', wherein R is a straight or branched chain aliphatic organic group having from 10 to 20 carbon atoms, and R' is a straight or branched chain carboxylic acid having from 1 to 7 carbon atoms. At an active-concentration ratio of surfactant (a) to surfactant (b) of about 2.5:1, the surfactants have a synergistic effect on the cleaning composition's ability to remove certain types of industrial-soil contaminants. Cleaning of the substrate with the aqueous cleaning composition involves contacting the substrate with the composition for a period of time sufficient to remove at least a substantial portion of the contaminants from the substrate.

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patent: 5158710 (1992-10-01), VanEenam
patent: 5190747 (1993-03-01), Sekiguchi et al.
patent: 5411585 (1995-05-01), Avery et al.

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