Cardolite® NX - 8101

1 of 30 products in this brand
Cardolite® NX - 8101 is an epoxy curing agent based on modified CNSL waterborne technology, recommended for epoxy primers and self-levelers for concrete floors.

Chemical Family: Phenalkamines

Labeling Claims: Cosolvent-free, Low Odor, Solvent-free, VOC-free

Compatible Polymers & Resins: Epoxies (EP)

Physical Form: Liquid

Features: Chemical Resistance, Corrosion Resistance, Cost Effective, Excellent Adhesion, Fast Cure, High Compressive Strength , High Durability, High Impact Resistance, Hot Water Resistance, Low Color, Low Odor, Stain Resistance

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Identification & Functionality

Features & Benefits

Labeling Claims
CASE Ingredients Features
Product Features
  • Phenalkamine grade NX-8101 is designed for cost effective water-based concrete epoxy primers and self- levelers that require quick return-to-service, excellent adhesion to concrete and top coats, and superior durability.
  • This new low odor epoxy curing agent is supplied in water and does not contain or require any solvents in the formulation to deliver excellent performance.
  • Its good compatibility with standard liquid epoxy and solid epoxy dispersions, and easy reducibility in water, broadens its use and allows for cost effective industrial coatings.
Product Benefits
  • Completely solvent-free!
  • Fast cure and hardness development even at 10°C and 80% relative humidity
  • Excellent adhesion over dry and damp concrete
  • Compatible with standard liquid epoxy and solid epoxy dispersions
  • Good formulation latitude:
    • Do not demand emulsifiers
    • Wide compatibility
    • Systems easily reducible in water
  • Excellent self-leveling properties
  • Visible end of pot life
  • Good stain resistance (household and industrial products)
  • Low color, good film appearance
  • Cost effective!

Applications & Uses

Compatible Polymers & Resins
Compatible Substrates & Surfaces
Adhesive & Sealant End Applications
Coating End Applications
Industrial Additives End Use
Use Level
130 - 155 (phr, EEW 190)
Flexibility Pigmented Formulation

Competitive (WBCA)

Direct Impact 20 in-lbs 15 in-lbs
Reverse Impact 4 in-lbs < 4 in-lbs
  • 25°C cure for 7 days before impact testing
  • NX-8101 shows slightly better impact resistance than competitive WBCA. DFT of 100μ (over CRS)
Product Applications
  • NX-8101 is compatible with solid epoxy dispersions
  • No additional emulsifiers are required
  • Current results with BECKOPOX® EP 2384w/57W :
    • Excellent film formation
    • Great spray characteristics
    • Excellent adhesion and blister resistance in salt spray testing with minimal corrosion inhibiting pigments.

Cardolite® NX - 8101 - Product Applications - 1

  • NX-8101 For Use Over Steel
  • NX-8101 exhibited no blisters away from the scribe line while the commercial waterborne curing agent showed blisters in and near to the scribe along with field blisters.


Physical Form
Amber liquid
Typical Properties
ValueUnitsTest Method / Conditions
Colormax. 10GardnerASTM D1544
Viscosity (at 25°C)20,000 - 55,000cPsASTM D2196
Amine Value140 - 180mg KOH/gASTM D2074
Theoretical Active Hydrogen Equivalent (based on total product weight)270.0-Calculated
Solid Content48 - 52wt.%ASTM D2369-98
Density (at 25°C)8.61lbs/galASTM D1475
Cured Properties
ValueUnitsTest Method / Conditions
Thin Film Dry Times 8 Mils (at 25°C, at 200 micron, hard)3hoursASTM D5895
Thin Film Dry Times 8 Mils (at 25°C, at 200 micron, through)4hoursASTM D5895
Thin Film Dry Times 8 Mils (at 5°C, at 200 micron, hard)9hoursASTM D5895
Thin Film Dry Times 8 Mils (at 5°C, at 200 micron, through)17hoursASTM D5895
Liquid Epoxy Resin (EEW 190)100.0pbw-
Cardolite NX-8101 Content142.0pbw-
Mix Viscosity (at 25°C)1850.0cPs-
Gel Time (at 25°C, 50 g)45.0minutesNTM-15
Film Appearance (at 10°C, 80% RH)Clear-Visual

Technical Details & Test Data

Cured With Liquid Epoxy

Cardolite® NX - 8101 - Curing Properties - 1

  • Hardness Development at 10°C / 80% R.H.
  • NX-8101 self-leveling formulation permits early walk-on hardness at low temperatures and high humidity (3 mm film thickness).
  • Even under high humidity LTC conditions, NX-8101 allows quick walk-on times.

Cardolite® NX - 8101 - Curing Properties - 1

  • NX-8101 Pot Life at 25°C
  • Admixed with standard liquid epoxy reduced with water – total weight solids 52%

Cardolite® NX - 8101 - Curing Properties - 1

  • NX-8001 shows faster cure than competitive WBCA at room and low temperatures, and low and high humidity.

Cardolite® NX - 8101 - Curing Properties - 1

  • Hardness Development at 25°C
  • In a self-leveling formulation, NX-8101 achieves walk-on hardness on the first day. (3 mm film thickness)
  • Both systems show fast walk-on hardness in clear non-pigmented formulation.
Adhesion to Concrete

Adhesion to Dry Concrete:

  • Used 25 mil drawdown applicator to apply primer on concrete paver and cured for 7 days before adhesion test.

Adhesion to Damp Concrete:

  • Concrete pavers fully immersed in water. After 72 hrs freestanding water on the top removed by blotting with paper towels.
  • Pavers were ½ immersed in water and primer was applied with a 25 mil drawdown applicator.
  • Coated pavers were cured for 7 days before adhesion test.

Curing Agent

Dry Concrete (psi/MPa)* Wet Concrete (psi/MPa)*
Direct to concrete

Direct to concrete

NX-8101 650 / 4.48 620 / 4.27
Competitive (WBCA) 625 / 4.30 523 / 3.56

*Mode of failure: in the concrete

  • NX-8101 shows excellent adhesion to dry and wet concrete. (failure mode = concrete)
Chemical / Stain Resistance

MEK Resistance 7 day cure at 25°C (200 double rubs)


  Marring Break-through Softening
NX-8101 Yes No Slight
Competitive (WBCA) Yes No More

24 hour Spot Test at 25°C



Competitive (WBCA)

Mustard Slight stain Slight stain
Ketchup No Effect Slight stain
3% Acetic Acid No Effect No Effect
Bleach No Effect No Effect
Coffee No Effect No Effect
Ethanol No Effect No Effect
Xylene No Effect No Effect
  • NX-8101 shows good chemical resistance.
Test Conclusions
Properties NX-8101

Competitive (WBCA)

Easy Mixing with liquid epoxy Excellent Fair
Fast cure at low temperatures and high humidity Excellent Poor
Excellent adhesion to damp concrete Excellent Excellent
Cured films are resistant to stains Excellent Good
Suitable for concrete primer formulations Excellent Excellent
Suitable for self-leveling formulations Excellent Fair

Storage & Handling

Storage Condition

Cardolite products may absorb moisture and carbon dioxide when left in open containers, which could result in increased viscosity, discoloration, reduction of reactivity, and/or crystallization of the products. These products should be kept tightly sealed in their original containers when not in use, and stored in a cool, dry place that does not exceed 40°C.