Stock material or miscellaneous articles – Composite – Of metal
Patent
1989-01-30
1989-07-18
Herbert, Thomas J.
Stock material or miscellaneous articles
Composite
Of metal
106 1439, 106 1444, 524428, B32B 1504
Patent
active
048492973
ABSTRACT:
Corrosion inhibiting calcium-containing amorphous precipitated silica is described. The silica is prepared by admixing simultaneously in a reactor aqueous alkali metal silicate, e.g., sodium silicate, acidifying agent, e.g., hydrochloric acid, and a water-soluble source of calcium, e.g., calcium chloride. The product contains from 6 to 9 weight percent calcium (as CaO). The silica product may be incorporated into a coating composition used for corrodible metallic surfaces.
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Carson Dennis W.
Johnson Harlan B.
Jones Laurence E.
Krivak Thomas G.
Mansell J. Douglas
Herbert Thomas J.
PPG Industries Inc.
Stein Irwin M.
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