Compositions – Preservative agents – Anti-corrosion
Patent
1985-05-29
1987-08-18
Lilling, Herbert J.
Compositions
Preservative agents
Anti-corrosion
106 1405, 106 1425, 106 1439, 10628734, 106288B, 106309, 264 12, 264345, 423326, 423331, 423334, 523200, 523216, 524403, 524437, 524443, 524450, 524456, C09D 508, C09K 1502, C23F 1118, C08K 900
Patent
active
046875956
ABSTRACT:
A process for producing corrosion inhibiting particles comprising binding corrosion inhibiting cations by ion-exchange to particles of silica or alumina, which preferably have a BET surface area of at least 500 m.sup.2 /g, to form cation exchanged particles, the cations of which are releasable by further ion-exchange, the BET surface area of the cation-exchanged particles being reduced, preferably to less than 150 m.sup.2 /g, by subjecting the cation-exchanged particles to a heat treatment which comprises heating the particles at a temperature of from 50.degree. to 120.degree. C. while maintaining the water content of the particles at more than 15% by weight, followed by heating with removal of water to dry the particles. An embodiment of the invention comprises heating a slurry of the cation exchanged particles followed by drying e.g. spray drying.
REFERENCES:
patent: 4419137 (1983-12-01), Cayless et al.
patent: 4459155 (1984-07-01), Cayless
patent: 4474607 (1984-10-01), Goldie et al.
Howes Roger J.
Othen David G.
Lilling Herbert J.
The British Petroleum Company p.l.c.
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