Chemistry: natural resins or derivatives; peptides or proteins; – Lignins or derivatives – Aldehyde – ketone or ozone reacted with a lignin or lignin...
Patent
1984-10-30
1985-10-08
Phillips, Delbert R.
Chemistry: natural resins or derivatives; peptides or proteins;
Lignins or derivatives
Aldehyde, ketone or ozone reacted with a lignin or lignin...
530502, 530505, C07G 100
Patent
active
045461732
ABSTRACT:
A process for preparing sulfonated lignins suitable for use as dispersants and additives in dye compositions wherein sulfonated lignins are post-sulfonation crosslinked with a crosslinking agent of the aldehyde, epoxide, or polyhalide type at a pH range of between about 6.1 to 9 to selectively crosslink the low molecular weight fraction of the sulfonated lignins to provide improved heat stability and dispersibility of the sulfonated lignins in dye compositions. The invention also concerns disperse and vat dye compositions, and printing gels, containing the sulfonated lignins as a dispersing agent or additive.
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Brauns et al., The Chemistry of Lignin--Supplement vol. (1960) pp. 553-555.
McDaniel Terry B.
Phillips Delbert R.
Schmalz Richard L.
Westvaco Corporation
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