Method for preparing vanillin from old newsprint

Details Method for preparing vanillin from old newsprint Method for preparing vanillin from old newsprint

1994-12-07

1996-12-31

Czaja, Donald E.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

162 8, 162 16, 162 14, D21C 502

Patent

active

055890300

ABSTRACT:
This invention relates generally to a method for extracting lignosulfonate for the manufacture of vanillin and other specialty chemicals. Specifically, the invention relates to a method for recovering lignosulfonates from newsprint comprising the steps of:

REFERENCES:
patent: 4021493 (1977-05-01), Major et al.
patent: 4321328 (1982-03-01), Hoge
patent: 4474994 (1984-10-01), Makin
patent: 4728728 (1988-03-01), Lin et al.
"Sulfite Treatment of Old Newspaper" Law et al. Abstracts of Papers presented at the 208th Am. Chemical Society National Meeting, Aug. 21-25, 1994, Washington, D.C.

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