Formation of colloidal dispersions of selenium by the locus cont

Details Formation of colloidal dispersions of selenium by the locus cont Formation of colloidal dispersions of selenium by the locus cont

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.

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