Anion-exchange pigments

Williams G., McMurray H.N. (2012), Inhibition of fiUform corrosion on organic-coated AA2024-T3 by smart-release cation and anion-exchange pigments ,fi/ec/rac/iiiw. Acta, 69,287-294. 

McMurray H. N. and Williams G. (2004), Inhibition of Filiform Corrosion on Oiganic-Coated Aluminum Alloy by Hydrotalcite-Like Anion-Exchange Pigments , Corrosion, 60,219-28. 

Anion exchange Anion-exchange phase Isolation of anionic analytes in aqueous or nonaqueous solutions Extraction of acidic and weakly acidic proteins and enzymes Removal of acidic pigments from wines, fruit juices, and food extracts Removal of organic acids from water... 

Aminopropyl, NH2 Normal-phase, Reverse phase, and weak cation exchange Low-capacity weak anion exchanger Drugs and metabolites from body fluids Petroleum and oil fractionation Phenols and plant pigments... 

To overcome the restrictions of the Barium method, ammonium carbonate was, in some cases, replaced by anionic exchange resins that are less aggressive and enable the treatment of tempera even in the presence of copper pigments. It must be added that the reaction of anion exchange resins is restricted to the surface in contact with the resin. Furthermore, the first-stage transformation producing barium sulfate is left out and barium hydroxide is applied directly. This technique is convenient with the many restrictions imposed by preconsolidation by synthetic resins. 

Williams G., McMuiray H.N. (2003), Anion-exchange inhibition of filiform corrosion on organic coated AA2024-T3 aluminum alloy by hydrotalcite-like pigments , Electrochem. Solid Slate Lett., 6, B9-B11. 

Currently, LC combined with UV/VlS detection is the most used analytical technique for the determination of dyes and pigments. Ion-exchange LC uses strong anion-exchange columns (or weak anion-exchange columns for separation of azo dyes) and gradient elution with buffered eluants. Reversed-phase LC uses columns packed with short-chain alkyl-bonded silica (e.g. octyl (Cg), octadecyl (Cig)), amino-bonded, and cyano-bonded... 

The effectiveness of zinc is related to its associated anion (Table 7) the chloride, acetate, or benzoate salts were the most effective. The maximum effectiveness of the metal would be expected if the exchange reaction with the pigment surface was... 

Recently, a large anionic pigment has been intercalated into an LDH host by ion-exchange of an Mg/Al LDH nitrate precursor with a solution of C.I. Pigment Red 48 2 (the calcium salt of 4-((5-chloro-4-methyl-2-sulfophenyl)azo)-3-hydroxy-2-naphthalene-carboxylic acid), in ethane-1,2-diol [215]. The UV-visible diffuse reflectance spectra of C.I. Pigment Red... 

Sulfonation and sulfation processes are utilized in the production of wateT-soluble anionic surfactants as principal ingredients in formulated light-duty and heavy-duty detergents, liquid hand cleansers, general household and personal care products, and dental care products. Other commercially significant product applications include emulsifiers, lube additives, sweeteners, pesticides, medicinals. ion-exchange resins, dyes and pigments. 

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