Process for the recovery of sodium nitrite

Details Process for the recovery of sodium nitrite Process for the recovery of sodium nitrite

2005-02-15

2005-02-15

Langel, Wayne A. (Department: 1754)

Chemistry of inorganic compounds

Nitrogen or compound thereof

Oxygen containing

C548S456000, C548S473000

Reexamination Certificate

active

06855306

ABSTRACT:
A process is provided for the removal of undesirable organic matter from solutions of sodium nitrite that are generated as byproducts in the manufacture of thermoplastic resins. The process employs certain activated carbon types derived from lignite granular material under conditions that are favorable to promote the absorption of the organic matter of a variety of organic substances that are residuals that remain from organic phase specifications in the plastics manufacture.

REFERENCES:
patent: 2032699 (1936-03-01), Hayes et al.
patent: 3928543 (1975-12-01), Gregory et al.
patent: 3965247 (1976-06-01), Hecklinger et al.
patent: 4009246 (1977-02-01), Wendel
patent: 5068353 (1991-11-01), Dellacoletta
patent: 5709800 (1998-01-01), Ross et al.
patent: 6251354 (2001-06-01), Greenwell et al.

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