Compositions – Preservative agents – Anti-corrosion
Patent
1977-09-19
1978-10-24
Lovering, Richard D.
Compositions
Preservative agents
Anti-corrosion
96 15R, 252309, 252501, B01J 1300
Patent
active
041220307
ABSTRACT:
The present invention is a method for preparing a colloidal dispersion of selenium by the locus control process. In one embodiment the method involves adding hydrazine to a solution containing submicron sized domains of a soluble second phase which domains bear a plurality of pendant acid groups to form a salt between the hydrazine and pendant acid groups. Addition of selenous acid to the solution results in reduction of the selenium contained therein to zero valent selenium which selenium is produced in the form of a stable colloidal dispersion.
REFERENCES:
patent: 3130012 (1964-04-01), Prater et al.
patent: 3962113 (1976-06-01), Schiessl et al.
Gunther Wolfgang H. H.
Smith Thomas W.
Lovering Richard D.
Xerox Corporation
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