Category overview

Viscosity Depressants

Based on 67 products - Last update on the Jun 26, 2025

Viscosity depressants are typically clear, low-viscosity liquids or light esters that are added to coating formulations to reduce overall viscosity without compromising film integrity. Functionally, they help optimize flow, leveling, and application properties—particularly in high-solids systems—by improving the ease of application and reducing the need for excessive solvent use. They are used in automotive and industrial coatings. 

Industry trends are leaning toward non-HAP, low-odor, and bio-based options that enhance sustainability without affecting performance. These additives are available in solvent-compatible, waterborne, and UV-curable variants. Reformulations continue to align with VOC content limits and air quality regulations under frameworks such as EPA, REACH, and SCAQMD.

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HELOXY™ Modifier 107

by Westlake Epoxy

HELOXY™ Modifier 107 by Westlake Epoxy is a viscosity reducer or reactive diluent. It is diglycidyl ether of cyclohexane dimethanol. It improves air release and wetting characteristics. It provides excellent cured state resistance to creep or deformation under high stress.<br> <ul style="padding-left: 40px;"><li>It maintains high reactivity yet provides workable viscosity at room temperature when using novolac or other high functionality epoxy resins.</li> <li>It decreases chemical resistance and elevated temperature performance.</li> <li>It is compatible with bisphenol-A based epoxy resins and higher functionality epoxy resins. </li> <li>The shelf life of HELOXY™ Modifier 107 is 5 years.</li></ul>
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HELOXY™ Modifier 68

by Westlake Epoxy

HELOXY™ Modifier 68 by Westlake Epoxy is a viscosity modifier or reactive diluent used for all classes of epoxy resins. It is a diglycidyl ether of neopentyl glycol. It offers improved air release and wetting characteristics in electrical potting, encapsulation and impregnation applications. <br> <ul style="padding-left: 40px;"><li>It can maintain high reactivity yet provide workable viscosity at room temperature when using epoxy novolac or other high functionality epoxy resins. </li> <li>It reduces viscosity while maintaining most cured state properties.</li> <li>It is compatible with bisphenol-based epoxy resins, peroxidized olefins and higher functionality epoxy resins. </li> <li>HELOXY™ Modifier 68 has a shelf life of 5 years.</li></ul>
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Westlake Epoxy

230 Products
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Viscosity Depressants