Entropy CLX Clear Extra Fast HardenerEntropy CLF Clear Fast HardenerEntropy CLS Clear Slow Hardener
Entropy CLR Clear Laminating Epoxy Resin
Entropy CLX Clear Extra Fast Hardener
Entropy CLF Clear Fast Hardener
Entropy CLS Clear Slow Hardener

CLR – Clear Laminating Epoxy

From: $70.00

Clear, general use, laminating epoxy for composites, coating, and adhesive applications. CLR is a SUPER SAP® Formulation.

SKU: EK-CLR/ Category:

Product Overview

CLR Clear Laminating Epoxy is our flagship, high-performance clear-coating epoxy system.  A SUPER SAP® Formulation, the CLR system is a water clear, UV-stabilized epoxy system for applications that require a low-color, low-yellowing epoxy such as high-color applications.  This system features a quick air-release and world-class UV resistance package. CLR works with multiple hardeners to match your working parameters.  It has an ideal viscosity for a wide range of applications that use hand layup techniques with fast, room-temperature cures.

Available in FAST and SLOW cure speed – Hardener speeds can be combined to customize working times.

Fast Cure: 21 min pot life, 4 HR tack free time

Slow Cure: 43 min pot life, 8 HR tack free time

Two-part epoxy resin kits comprised of CLR Clear Laminating Epoxy Resin and CLF (FAST) or CLS (SLOW) Hardener.

For white substrate applications, we recommend our BRT Optically Brightened Laminating Epoxy Resin formula.

Best Uses

Fiberglass composites

Carbon fiber composites

Natural fiber composites

Clear Coatings

Fiberglass boat repair

Adhesives and sealants

Surfboards, standup paddleboards, handplanes

Prop 65

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Product Info
Key Features Clear, UV stable
Compatible Processes Hand Layup
Epoxy Coatings
Vacuum Bagging
Biobased Content (% C, ASTM D6866) FAST: 17%, SLOW: 25%
Color Clear
Processing Info
Mix Ratio (by volume) 2:1
Mixed Viscosity (@ 77°F) FAST HARDENER KIT: 1000 cP
Pot Life (100g @ 77°F) FAST: 25 mins, SLOW: 40 mins
Track Free Time (@ 77°F) FAST: 4 hrs, SLOW: 8 hrs
Recommend Full Cure 7 days @ 77°F, SLOW: Post cure recommended
Performance Data
Tensile Strength (ASTM D638) 9,500 psi
Elongation (ASTM D638) 6%
Flexural Strength (ASTM D790) 14,000 psi
Tg (Ultimate, DSC) 150°F