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Amination Lignin

Another method is amination with a polyamine and an aldehyde [1567]. The formulation also contains sodium carbonate, sodium phosphate, sodium sulfite, sodium metasilicate, or naphthalene sulfonate. The sulfonated or sulfomethyl-ated aminated lignin shows less retardation (shorter thickening time) than a sulfonated or sulfomethylated lignin without the attached amine. [Pg.46]

Quartz, mica Amines Lignin suirace, NajCO, sodium silicale Mica is fiaamd by depressing quartz and feldspar, during second stage feldspar is floated by depressing quartz wilh HF... [Pg.799]

Combustion Energy Alkaline Hydrolysis or Direct AoDlications Phenol-Formaldehyde Resins, Epoxy-modified lignin, Aminated Lignin, Sulfonated Lignin, Cement, Ceramics, Emulsions, Fertilisers, Silicon Carbide Pyrolysis CO, H2, Methane, Phenol, Ethene, Benzene Alkaline Melt or Hvdroaenoivsis Phenols... [Pg.130]

Pan, H., Sun, Q, Zhao T. 2013. Synthesis and characterization of aminated lignin [J]. International Journal of Biological Macromolecules 59 221-226. [Pg.184]

Parajuli D, Kawakita H, Inoue K, Funaoka M (2(X)6) Recovery of gold (III), palladium(II), and platinum(IV) by aminated lignin derivatives. Indust Eng Chem Res 45 6405-6412... [Pg.61]

Typical compositions for softwood and hardwood kraft blackhquors are shown in Table 10. Most commercial kraft lignins are sulfonated kraft lignins or lignin amines. A few nonsulfonated products are, however, available. [Pg.145]

Manufacturing procedures for producing dye dispersions are generally not disclosed. The principal dispersants in use include long-chain alkyl sulfates, alkaryl sulfonates, fatty amine—ethylene oxide condensates, fatty alcohol—ethylene oxide condensates, naphthalene—formaldehyde—sulfuric acid condensates, and the lignin sulfonic acids. [Pg.450]

Lignin amines with high nitrogen content are water soluble at both alkaline and acidic pH values. The lignin amines have various useful properties. For example, they are active as flocculants, filtration aids, scale inhibitors, fluid loss additives, oil well cement additives, and corrosion inhibitors among other potential uses. The nitrogen is introduced into the lignins with the Mannich reaction [1570]. [Pg.94]

P. Schilling. Aminated sulfonated or sulfomethylated lignins as cement fluid loss control additives. Patent US 4990191, 1991. [Pg.457]

P. Schilling and P. E. Brown. Cationic and anionic lignin amines corrosion inhibitors. Patent US 4789523, 1988. [Pg.457]

As to the origins of the major N compounds identified, it is possible that at least a portion of some of these compounds are pyrolysis products of amino acids, peptides, proteins, [18] and porphyrins (a component of chlorophyll), [19] or originate from the microbial decomposition of plant lignins and other phenolics in the presence of ammonia. [20] Of considerable interest are the identifications aromatic and aliphatic nitriles. Nitriles can be formed from amines with the loss of 2 H2, from amides with the loss of H20, and also by reacting n-alkanoic acid with NH3. [21] The detection of long-chain alkyl- and dialkyl-nitriles points to the presence in the soil or SOM of long-chain amines... [Pg.125]

The modification of lignins with chlorophosphazenes allows the manufacture of products characterized by flame resistance and thermal stability. This can be attributed to the aromatic structure of the lignin-phosphazene polymer as well as to the presence of such flame inhibiting elements as phosphorous, nitrogen and sulfur. Other useful properties may also result from this combination. It has previously been reported (8-13) that the modification provides crosslinked products with suitably low chlorine content. This is a consequence of incomplete substitution of the phosphazenes cycles. Additional modification of the reaction products by chemical compounds with reactive hydroxyl or amine groups reduces the unreacted chlorine content and improves product properties (8-13). Some properties of the derivatives obtained are presented in Table I. [Pg.253]

An additional modification of lignins with hydroxyl or amine group-containing compounds was found to further improve the product properties (Table III). [Pg.253]

Preparation of Ozonized Lignin/Epoxy Resins. Each ozonized lignin (1.0 g) was mixed with DGEBA and heated at 120°C with stirring as described in the previous section. After heating for 30 min, the mixture was cooled to room temperature. The solidified reactants were dissolved in acetone (2 ml) and the curing reagents, diethylenetriamine (DETA) or hexamethylenedi-amine (HMDA), were added at 90% of the stoichiometric amount to epoxy equivalent. [Pg.499]


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See also in sourсe #XX -- [ Pg.90 ]




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Lignin amine derivatives

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