Aminated sulfite derivatives of coniferous barks

Details Aminated sulfite derivatives of coniferous barks Aminated sulfite derivatives of coniferous barks

1972-07-03

1976-06-29

Winters, Sherman D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603452, 2604735, 71 23, C07G 1700

Patent

active

039667081

ABSTRACT:
Polyphenolic components of coniferous tree barks are reacted with a concentrated aqueous solution containing ammonia and sulfur dioxide to produce aminated sulfite reaction products having high nitrogen contents. The products have a number of valuable applications including utility in the agricultural field. The reaction takes place at temperatures of 130.degree. - 190.degree.C., the ratio of NH.sub.3 /bark is within the range of 0.2 - 1.2 and ratio of SO.sub.2 /bark is within the range of 0.25 - 0.4, on a weight basis.

REFERENCES:
patent: 2823223 (1958-02-01), Steinberg et al.
patent: 2831022 (1958-04-01), Van Blaricom et al.
patent: 3270003 (1966-08-01), Van Blaricom et al.
Name Reactions in Organic Chemistry - Surrey (1954), Academic Press, Inc., pp. 21-22.
Angew. Chem. Int. Ed. Eng. 6 : 307 (1967).

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