Method of removing tubercles using organic polymers and silica and/or chromium compounds
Abstract
Abstract A METHOD OF REMOVING TUBERCLES OF CORROSION FROM A SUBSTRATE AND INHIBITING FURTHER CORROSION AND SCALE FORMATION ON THE SUBSTRATE INCLUDING THE STEPS OF PROVIDING AN AQUEOUS SOLUTION OF TWO ORGANIC POLYMERS AND A WATER SOLUBLE SILICA CONTAINING COMPOUND AND/OR A WATER SOLUBLE CHROMIUM CONTAINING COMPOUND AND APPLYING IT TO THE SUBSTRATE. ONE OF THE POLYMERS (1) IS PREPARED FROM COMPOUNDS CHARACTERIZED BY THE FORMULA: >C=C(-R)- WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF NITRILE, IMINE, AMIDE AND CARBOXYL RADICALS, (2) HAS AN AVERAGE MOLECULAR WEIGHT RANGING FROM ABOUT 15,000 TO 15,000,000 AND (3) HAS A WEIGHT CONCENTRATION OF AOUT 0.01 TO 300 PARTS PER MILLIONPARTS OF WATER. THE OTHER POLYMER IS SELECTED FROM THE GROUP CONSISTING OF POLYACRYLIC ACID, POLYACRYLATE, ORGANIC PHOSPHONATES AND MIXTURES THEREOF HAVING AN AVERAGE MOLECULAR WEIGHT APPROXIMATELY IN THE RANGE 1,000-50,000.
Inventors
- 👤 Paul R Puckorius
- 👤 William E Zimmie
Bibliographic Details
Claims Analysis
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