Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1989-10-30
1992-01-14
Cooper, Jack
Compositions
Water-softening or purifying or scale-inhibiting agents
252173, 25217422, 252541, 252170, 252 70, 252DIG10, C11D 172, C11D 700
Patent
active
050808257
ABSTRACT:
A water based cleaning composition suitable for use in tape drives including very small quantities of a surfactant, preferably a tridecyl alcohol ether of polyoxyethylene, and an ionic salt of ammonia is disclosed. The quantity of surfactant is such that it is totally water soluble and furthermore does not exist as a free solvent susceptible to evaporation into the environment. The combination of the surfactant and an ionic salt of ammonia, preferably ammonium carbonate, enhances detergency and the suspension of debris without leaving a residue. In addition, the ionic salt of ammonia is provided in a quantity which maintains a neutral pH, thereby minimizing the corrosiveness of the cleaning composition and eliminating static.
REFERENCES:
patent: 3839234 (1974-10-01), Roscoe
patent: 4343725 (1982-08-01), Kiewert et al.
patent: 4692277 (1987-09-01), Siklosi
Gudjons et al., "Study of Windshield Washer Fluids", Seifen, Oele, Felte, Wachse, 109(7), 204-206, 1983.
Cooper Jack
International Business Machines - Corporation
Schecter Manny W.
Silbermann J.
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