EPOXY internal mold releases
Recommendations based on compatibility with the many types of hardeners used to cure a typical Bisphenol-A epoxy resin.
Cure Products Typical Application Comments
Aliphatic amines, example, DETA INT-1846N Molding compounds at low to moderate temperatures Neutralized to prevent premature reaction with hardener, avoiding poor cured properties.
Aliphatic amines INT-1850HT Higher temperatures, >350F/175C Good thermal stability evidenced by TGA.
Cycloaliphatic amines
Example: PACM
INT-1840 Filament winding Reduced acidity to ensure maximum surface activity without sacrificing cured properties.
Aromatic amines, MDA & non-MDA-based INT-1846   Acidic for maximum surface effect.
Aromatic amines, fluorene-based INT-1824L High temperature cures, >450F/230C Minimal loss of Tg, even when used at 2phr.
Acid anhydride, Example: phthalic anhydride INT-1890M   Mild catalysis imparted by lubricant improves production output
Acid anhydride, example, MTHPA INT-1846N Pultrusion Tertiary amine or imidazole-catalyzed.
Extends bath life and reduces sloughing.
Anhydride, liquid INT-1810 Production of electrical components Clear, haze-free castings.
Anhydride, general INT-1854    
Water dispersible amines or polyamides INT-EP545(SL)   Excellent dispersion in epoxy emulsions.
Good for treating surface veils.
Lewis acids, example BF3.MEA INT-1815 Rapid curing parts at low activation temperatures, RT – 120F/50C Does not poison polymerization kinetics.
UV-cured epoxy acrylates INT-1210
Clear, haze-free castings Does not poison polymerization kinetics.


Polyester/Vinyl EsterPhenolics



Internal Mold Releases

1 gallon / 4 gallon case / 5 gallon pail / 55 gallon drum ( priced by the lb.)





The products in this website are just a sampling of the hundreds of internal and external release agents and process aid additives that AXEL manufactures. If you don’t see what you need, call us. Chances are we already have a product that is just right. If not, we can custom formulate to meet your exact requirements.

All AXEL products are formulated from raw materials that comply with the chemical substance inventory lists of TOSCA, DSL, MITI, EINECS, Australia & Korea.

To learn how a MoldWiz® and/or XTEND™ product can improve your production and profits, call AXEL’s technical service representatives at (800) 332-AXEL or (718) 672-8300 for a free sample to meet your specific needs.


Axel Plastics Research Laboratories, Inc.
Box 77 0855, Woodside, NY 11377 USA
Tel: (718) 672-8300 • Fax: (718) 565-7447
E-mail: [email protected]


©2002 Axel Plastics Research Laboratories, Inc.