2NaRESIN

2NaRESIN is a trade designation applied to a class of disodium salt resins used primarily as thickeners and binders in waterborne coatings, inks, and adhesives. The exact composition varies by producer, but the term generally denotes a resin molecule that has been neutralized with two sodium counterions, rendering it more water-dispersible than a free acid form.

Most 2NaRESIN materials are derived from natural rosin resins or from synthetic resins with pendant carboxyl or sulfonate groups that are converted to their disodium salts during processing. The degree of neutralization, molecular weight, and particle form (powder or dispersion) depend on the intended end-use.

Production typically involves reacting the resin with sodium hydroxide or another sodium source to form disodium salt groups, followed by drying or emulsification to create a stable powder or aqueous dispersion. Manufacturers may tailor rheology, solids content, and compatibility with pigments through post-neutralization and dispersion steps.

Applications include thickening, binding, and film formation in water-based paints, coatings, graphic inks, and adhesives. 2NaRESIN can improve flow, sag resistance, gloss, and pigment compatibility, particularly in systems requiring higher solids and low VOCs. Performance is influenced by pH, ionic strength, and formulation variables.

Safety considerations are similar to other resin salts: handle with standard industrial hygiene practices, avoid inhalation of dust, and wear protective equipment as appropriate. Environmental impacts depend on the specific resin backbone and impurities; disposal should follow local regulations.

See also: disodium resinate, rosin derivatives, waterborne polymers.