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System Boasts Fast Dry, Low VOCs

Wednesday, May 18, 2016

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A new coating system from Hexion Inc. (Columbus, OH) is touted as offering performance that compares to solvent-borne systems while meeting stringent volatile organic compounds regulations, but without the premium price often associated with high-performance waterborne epoxies.

The key to this new system, according to the company, is a water-soluble amine curing agent called Research Curing Agent RSC-4431. This solvent-free curing agent has a lower equivalent weight, it adds, which means that formulators can use less to cure the same amount of epoxy resin.

rail coatings
© iStock.com / Tony Tremblay

The NextGen Epoxy Waterborne System is also said to offer improved product stability, superior freeze-thaw stability and an extended working pot life of 5 to 6 hours with superior gloss.

When combined with its EPI-REZ Resin 7520-WD-52 system, the company claims the curing agent can deliver lower VOCs, faster dry and good hardness development.

The NextGen Epoxy system can be used to formulate ultra-low VOC coatings on concrete at less than 50 grams per liter (g/L) VOC content, and on metal at less than 100 g/L VOC content, according to the manufacturer.

“We are excited at the prospect of our NextGen Epoxy system making waterborne, ultra-low VOC coatings more accessible to a wider range of coatings customers because of its unique balance of performance and price,” said Dan Weinmann, segment leader for Coatings & Civil Engineering at Hexion.

The NextGen Epoxy Waterborne System is also said to offer improved product stability, superior freeze-thaw stability and an extended working pot life of 5 to 6 hours with superior gloss.

Recommended applications for this new waterborne system include concrete coatings for floors and walls; industrial maintenance coatings for metal; agricultural and construction equipment coatings; railway coatings; and coatings for automotive parts and accessories.

More information: www.hexion.com.

   

Tagged categories: Asia Pacific; Coating chemistry; Coating Materials; Coatings; EMEA (Europe, Middle East and Africa); Epoxy; Hexion; Latin America; Low-VOC; North America; Pot life; Resins; Solventborne coatings; Waterborne coatings

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