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Dyestuff composition: disperse or vat dye and lignin sulphonate
Dyestuff composition: disperse or vat dye and lignin sulphonate
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机译:染料组成:分散染料或还原染料和木质素磺酸盐
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摘要
Improved dyestuff compositions are disclosed herein comprising, as dispersants, sulfonated lignins prepared by selectively isolating lignins having molecular weights greater than 5,000 and subsequently reacting the lignin with sodium sulfite and an aldehyde.
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