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Ernie Galgoci.

Ernie Galgoci

Lead Applications Chemist, Coating Additives

[ILLUSTRATION OMITTED]

Q How can I improve the aesthetics of my waterborne coatings?

A The aesthetics of many waterborne coatings can be improved by enhancing the flow and leveling of the formulation. Typically, flow and leveling is caused by retraction due to the application technique (such as spray, brush and roller) and surface tension differences, including differential solvent evaporation, thermal gradients, and compositional differences.

Air Products' research has shown that surfactants that confer both low equilibrium and dynamic surface tension ([[gamma].sub.la]) prevent retraction in coatings, inks and adhesive formulations. The company's Surfynol[R] and EnviroGem[R] AE series surfactants provide excellent surface tension reduction and flow and leveling characteristics without foam generation.

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www.airproducts.com/chemicals
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Title Annotation:Ask the Expert
Publication:JCT CoatingsTech
Date:Sep 1, 2004
Words:128
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