Compression Molding Epoxy

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A compression molding epoxy system for fast cycle times in heat-assisted molding processes of fiber-reinforced composites. Make Things Better® on your next project with this Super Sap® Formulation.

30% Biobased Content

USDA BioPreferred Certified

Product Overview

Compression Molding Epoxy Resin is a versatile system designed specifically for the compression molding processes of composite parts. The Compression Molding Epoxy system delivers a high bio-content, excellent fiber wetting qualities, and thixotropic characteristics to limit sag in high-temperature cure applications. A high modulus, combined with excellent elongation properties, enables durable yet lightweight composite parts. Compression Molding Epoxy Resin is a Super Sap® Formulation.

Available in SLOW (Compression Molding Slow Hardener) or FAST (Compression Molding Fast Hardener) cure speeds.

Minimum cure temperature: 150°F / 65°C.

Compression Molding Epoxy Resin with CPS Slow Cure: 50 min pot life, recommended full cure time of 40 min at 180°F / 82°C.

CPM with CPF Fast Cure: 20 min pot life, recommended full cure time of 20 min at 180°F / 82°C.



Two-part epoxy kits are comprised of Super Sap CPM Resin and CPS Slow Hardener.

Best Uses

  • Skis and Snowboards
  • Skateboards
  • Press Molding Composites
  • Wood Laminates

Prop 65

Click to view all Entropy Resins California Prop 65 statements.


Application Tips:
  • Recommended for a full cure: CPM/CPF—20 minutes at 180°F (82°C). CPM/CPS—40 minutes at 180°F (82°C). The required minimum cure temperature is 150°F (65°C).
  • For best results, measure the two components by weight within 5% of the recommended mix ratio.
  • Always mix the product for at least two minutes, scraping the container to ensure complete mixing.
  • Use products in a controlled environment. Avoid high humidity and cold temperatures.
  • Amine blush, a byproduct of the curing process, appears as a wax-like film on cured epoxy and is more noticeable in cool, moist conditions. It can clog sandpaper and inhibit subsequent bonding. Blush is water-soluble and easily removed with clean water (not solvent) and an abrasive pad.
  • For good adhesion, epoxy bonding surfaces should be clean, dry, and sanded.
  • If unfamiliar with the product, create smaller test samples before starting a larger-scale project.

For general epoxy handling instructions, visit Epoxy Basics

For detailed instructions, visit Compression Molding.

For tips on handling epoxy safely, visit Epoxy Safety.




CPM - Technical Data Sheet

Mechanical Data
CPF Fast
CPS Slow
Tensile Modulus (ASTM D638) 435,000 psi (3.0 GPa) 436,000 psi (3.0 GPa)
Tensile Strength (ASTM D638) 8,860 psi (61.1 MPa) 8,990 psi (62.0 MPa)
Elongation (ASTM D638) 6% 6%
Flexural Modulus (ASTM D790) 405,790 psi (2.8GPa) 412,510 psi (2.8 GPa)
Flexural Strength (ASTM D790) 13,560 psi (93.5 MPa) 13,450 psi (92.7 MPa)
Compression Strength (ASTM D695) 12,630 psi (87.1 MPa) 11,410 psi (78.7 MPa)
Tg Ultimate (DSC, midpoint) 159°F/71°C 159°F/71°C
Hardness (Shore D) 70-80 70-80
Processing Data
CPF Fast
CPS Slow
Mix Ratio (by volume) 2:1 2:1
Mix Ratio (by weight) 100:42 100:42
Viscosity (A/B/Mixed @ 77°F/25°C) 1600/1700/2300 1600/530/1600
Component Density  (specific density @ 77°F/25°C) 1.13 (resin), 0.99 (hardener) 1.13 (resin), 0.96 (hardener)
Mixed Density (specific density @ 77°F/25°C) 1.09 1.08
Pot Life (specific density @ 77°F/25°C) 20 Min 50 Min
Tack Free Time (@ 95°F/35°C) N/A N/A
Recommended Full Cure 20 min @ 180°F/82°C 40 min @ 180°F/82°C
Environmental Data
CPF Fast
CPS Slow
VOC Content (ASTM D2369) 0.03 lbs/gal (3.31 g/L) 0.02 lbs/gal (2.18 g/L)
Mixed Biobased Carbon Content (ASTM D6866) 30% 33%

This technical information is provided in good faith and is based on the best knowledge of Gougeon Brothers, Inc. We cannot guarantee this data because conditions of product use are beyond our control.


Downloadable Product Safety Data Sheets are listed below. For general epoxy safety tips, visit our Epoxy Safety page.


Online orders ship UPS Ground with domestic delivery within 3 to 5 days, Canada 5-7 days.

Customer Service

For questions about existing orders please email: [email protected]

For questions about our products or technical advice call: 310-882-2120

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