Desulfurized black liquor soap compositions and processes for producing

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United States of America Patent

PATENT NO 11034914
APP PUB NO 20190338218A1
SERIAL NO

16395526

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Abstract

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A method to purify black liquor soap (BLS) from sulfur compounds is disclosed. In the BLS desulfurization method, a BLS composition is heated in an inert atmosphere and sulfur is removed via aqueous extractions with inorganic base in the absence of other chemicals such as brine, sulfate salts and carbonate salts. The purified BLS composition exhibits favorable properties, including reduced sulfur content, lower color, and improved odor characteristics. The resulting tall oil compositions, depitched tall oil compositions, tall oil distillation fractions, and products derived therefrom also show reduced sulfur content, lower color, and improved odor characteristics.

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Patent Owner(s)

Patent OwnerAddress
KRATON POLYMERS LLCHOUSTON TX 77084

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Buisman, Godfried J H Almere, NL 1 0
Foran, Charles D Savannah, US 2 29
Lange, Jos H M Almere, NL 10 4

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