Cleaning compositions containing a colorant stabilized against f

Details Cleaning compositions containing a colorant stabilized against f Cleaning compositions containing a colorant stabilized against f

1987-09-23

1989-04-18

Lieberman, Paul

Compositions

Water-softening or purifying or scale-inhibiting agents

252100, 252143, 252407, 252170, 252DIG10, C11D 700, C11D 760, B66D 304

Patent

active

048228540

ABSTRACT:
An acidic, aqueous cleaning composition comprising a surfactant; up to about 50% of a higher boiling solvent, typically in alkyl ether of an alkylene glycol, said solvent introducing impurities into the composition in an amount and of a nature normally chemically incompatible with oxidizable dye chromophores; a dye in an amount to provide a desired tinctorial value, and oxalic acid or a salt thereof in an amount effective to retard fading of the dye. In another aspect of the invention, the oxalic acid incorporated into compositions containing a solvent, a surfactant, and water, and optionally a dye provides a beneficial cleaning result. In yet another aspect of the invention, the oxalic acid beneficially retards the development of malodors when the compositions of the present invention are contained in a PVC container. Broadly, the incorporation of oxalic acid in said solvent can be employed to neutralize said impurities.

REFERENCES:
patent: 3214380 (1965-10-01), Gangwisch
patent: 3463735 (1969-08-01), Stonebraker et al.
patent: 3503885 (1970-03-01), Wedell
patent: 4212759 (1980-07-01), Young et al.
patent: 4302348 (1981-11-01), Requejo
patent: 4412933 (1983-11-01), Klar et al.
patent: 4526701 (1985-07-01), Rubin
patent: 4606842 (1986-08-01), Keyes et al.
patent: 4612135 (1986-09-01), Wenzel
patent: 4698065 (1987-11-01), Hoeffkes et al.

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