BRT – Optically Brightened Laminating Epoxy

From: $95.50

Optically brightened version of our CLR system, for white surfboard lamination and hot coating. BRT is a SUPER SAP® Formulation.

SKU: EK-BRT/ Category:

Product Overview

BRT Optically Brightened Laminating Epoxy is a SUPER SAP® formulation. This optically brightened, clear laminating system is designed specifically for ultra white cosmetic applications such as surfboard laminations over EPS (polystyrene) or PU (polyurethane) foam.  Based on Entropy Resins classic CLR – CLEAR Epoxy Resin, BRT Optically Brightened Laminating Epoxy Resin can be paired with all CLR Clear hardeners.

Available in EXTRA FAST, FAST, and SLOW cure speeds – Hardener speeds can be combined to custom working times.

Extra Fast Cure: 18 min pot life, 2 HR tack free time

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 are comprised of BRT Epoxy Resin and CLX (EXTRA FAST), CLF (FAST) or CLS (SLOW) Hardener.

For dark color substrate applications, we recommend our CLR formula.

Best Uses

White Surfboards


Product Info
Key Features Clear, UV stable
Compatible Processes Hand Layup
Epoxy Coatings
Vacuum Bagging
Biobased Content (% C, ASTM D6866) FAST: 21%, SLOW: 29%
Color Clear
Processing Info
Mix Ratio (by volume) 2:1
Mixed Viscosity (@ 77°F) EXTRA-FAST HARDENER KIT: 990 cP,
Pot Life (100g @ 77°F) EXTRA-Fast: 18 mins,
FAST: 21 mins, SLOW: 43 mins
Tack Free Time (@ 77°F) EXTRA-FAST: 2 hrs, 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