Lignin derived quinonic compound mixtures useful for the deligni

Details Lignin derived quinonic compound mixtures useful for the deligni Lignin derived quinonic compound mixtures useful for the deligni

1988-08-23

1991-09-17

Alvo, Steve

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Including recovery of organic by-product

162 72, 552265, 552270, 552296, 552298, D21C 320

Patent

active

050492365

ABSTRACT:
A method for the preparation of a mixture of fused ring quinone type compounds from lignin and lignin-derived substances. The mixture of fused ring quinone compounds has been found useful in the wood pulping process as an accelerator in the degradation and separation of wood lignin from the other principal wood constituents, cellulose and hemicellulose.

REFERENCES:
patent: 1303168 (1919-05-01), Conover
patent: 3873580 (1975-03-01), Rennie
patent: 4012280 (1977-03-01), Holton
Sarkanen et al, "Lignins-Occurrence, Formation, Structure and Reactions"; N.Y., Wiley & Sons, 1971, pp. 43-94.
Butz et al, "Organic Reactions", vol. V; N.Y., Wiley & Sons, 1949, p. 166.

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