Cross-Linker from Nagase Allows Formulators to Create High-Performance Coatings

Nagase America, LLC, a specialty chemical manufacturer and distributor with US headquarters in New York, has announced Denacol™ EX-622, a unique cross-linker that provides value-added solutions to many coatings formulation challenges. Formulators pressed to deliver high-performance coatings can use Denacol EX-622 to fulfill customer needs while imparting additional processing and end-use benefits.

Denacol EX-622 is a sorbitol polyglycidyl ether – its aliphatic epoxy backbone enables formulators to create coatings that are non-yellowing, weather-resistant and low in color. Due to its tetrafunctionality, Denacol EX-622 increases reactivity and cross-link density, resulting in faster cure speeds and better resistance to water staining, chemicals and mechanical wear.

This versatile cross-linker can be used both in traditional epoxy systems and non-isocyanate (NISO) systems. Standard epoxy curatives, such as amines, can be used with Denacol EX-622 for traditional epoxy systems. For NISO systems, Denacol EX-622 can react with carboxyl functional acrylic resins or specialty curing agents – available from Nagase – to produce high-solids, ambient-cure coatings.

“Denacol EX-622’s unique properties are ideal for indoor or outdoor topcoat applications such as industrial, commercial and architectural flooring, light industrial corrosion protection and agricultural and construction equipment,” said J.P. Masson, director of sales and marketing. “It also works well in other high-performance applications – such as adhesives – where fast cure speed and high cross-link density are necessary.”

Depending on the application method and requirements, Denacol EX-622 can be formulated with other epoxy materials from the Denacol series to adjust final properties.

Nagase manufactures the Denacol series of aliphatic epoxies in Japan under strict quality control standards. Denacol EX-622 and related grades are stocked in North America for quick supply.

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