1391-R1 - Toughened Epoxy Resin

Toughened Epoxy Resin -

Medium viscosity, toughened, undiluted, epoxy resin with excellent physical properties. Fast wetting of reinforcement materials. Use Rhino 1391R-1 where resistance to cracking and increased impact resistance is desirable. 100% solids, highly resistant to crystallization in cold environments. No VOCs and DOT non-regulated.

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Suggested Uses

Filament winding, other epoxy/fiberglass applications where additional toughness, crack resistance and high impact strength are desired.

Properties of Rhino 1391R-1 Epoxy Resin (neat)

Viscosity:3,400 - 4,000
EEW:181 - 194
Color:Gardner 1 max
Weight/Gal:9.6 - 9.7 lbs


It is recommend that Rhino 1391R-1 be used at slightly elevated temperature 85° - 110°F (product use temperature). Storage below 45°F is not recommended due to potential crystallization of the product (requiring re-heating to restore original viscosity). All standard epoxy curing agents are compatible with Rhino 1391R-1, so proportion resin and hardener in accordance with the selected hardener system’s recommended mix ratio. Mix resin and hardener for 3 - 5 minutes being certain to scrape the bottom and sides of the mixing container. Mix no more material than may be applied before the expiration of the pot life.


Refer to the selected curing agent’s data for specific cure schedules and profiles.

How Supplied

Bulk Isotainer at 40,000lbs; 2500lb totes (net weight) and 500lb drums (net weight). FOB Rhino Linings Corporation, San Diego, CA. 


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