Chemical treatment of treading surfaces

Details Chemical treatment of treading surfaces Chemical treatment of treading surfaces

1996-11-21

1998-12-01

Lisehora, James

Road structure, process, or apparatus

Process

In situ treatment of earth or roadway

404 19, 510214, 510238, 510419, 134 27, B08B 308, C09K 1300

Patent

active

058428151

ABSTRACT:
A chemical solution for neutralizing treading surfaces includes a neutralizing agent such as an alkaline silicate neutralizing solution, a suitable dyestuff (non-indicator dye) and a masking agent (indicator dye) for masking the true color of the dyestuff. The masking agent becomes colorless at a pH of 7.0 or greater. The chemical solution is applied to a suitable treading surface, such as a ceramic tile floor, a suitable time after an acid treatment solution of hydrofluoric acid and nitric acid has been applied to the treading surface. Use of the indicator dye in combination with the non-indicator dye in the chemical solution yields a strongly visible color change which distinguishes the areas that have been sufficiently supplied with neutralizing solution from those that have not been sufficiently supplied with the neutralizing solution.

REFERENCES:
patent: 3650831 (1972-03-01), Jungermann et al.
patent: 4711735 (1987-12-01), Gulley
patent: 4749508 (1988-06-01), Cockrell, Jr. et al.
patent: 4877459 (1989-10-01), Cockrell, Jr. et al.

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