ARALDITE® PZ 3961-1

ARALDITE® PZ 3961-1 is a solid “1-type” epoxy resin emulsion designed for ambient or force curing coatings on metal and concrete. It delivers rapid drying, strong adhesion, flexibility, and corrosion resistance. Compatible with various ARADUR® waterborne curing agents, it enables low-VOC coatings tailored for diverse performance needs. Coatings based on ARADUR® 3986 offer superior corrosion resistance, fast drying, excellent adhesion, and flexibility. Those formulated with ARADUR® 3984 provide high gloss, color stability, rapid cure, pigment compatibility, and strong adhesion on metal and concrete. Coatings using ARADUR® 340 feature short touch dry times, long pot life, excellent adhesion, impact resistance, and flexibility.

Chemical Family: Epoxy & Epoxy Derivatives

End Uses: Can Coating, Concrete Coating, Drum Lining, Metal Coating, Primer, Textile Coating, Top Coat, Varnishes, Waterborne Coating

Compatible Substrates & Surfaces: Metal

Features: Corrosion Resistance, Excellent Adhesion, Excellent Stability, Fast Cure, Good Coalescence Ability, Good Hardness, Good Wetting, High Temperature Performance, Improved Pot Life, Low Temperature Performance, Room Temperature Curing

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Enhanced TDS

Identification & Functionality

Blend
No
CASE Ingredients Functions
Chemical Family
Function
Binder & Resin
Single Ingredient
Yes
Technologies
Product Families

Features & Benefits

CASE Ingredients Features
Product Properties
  • Offers fast cure, good adhesion, high hardness and good protection against corrosion. Pot lives are relatively short, except with ARADUR 340® and ARADUR® 3986 that offer a remarkable combination of long pot life and short dust-drying. Requires no hazard labelling.
  • Excessively low or high temperatures, high shear forces and some additives can break this emulsion. Storage at sensible temperatures (approx. 20°C), pigmentation of the hardener component and proper choice of additives will avoid problems.
  • Same gloss at all dilutions. Gloss decreases when pot life has expired. End of pot life is not visible, as viscosity does not change significantly in combination with most hardeners. Flexibility is adequate for normal filling ratios.

Applications & Uses

Coating End Applications
Compatible Substrates & Surfaces
Markets
Applications
Product Applications

ARALDITE® PZ 3961-1 is used:

  • Mainly for primers and topcoats onto metals with fast cure at ambient and warm temperature.
  • For fast-curing concrete coatings (addition of at least 30 % liquid resin emulsion based on ARALDITE® PY 33757 or ARALDITE® PZ 756-1/67 will improve coalescence of the films). This ensures proper wetting of concrete and therefore good adhesion of primers. Improved film coalescence also slightly reduces the minimal film forming temperature. This can be useful both for primers and topcoats.
  • To optimize the stability of diluted liquid resin emulsions.
  • For warm-curing industrial coatings (60 - 80°C).

Hardeners used:

  • ARADUR® 36 (very flexible).
  • ARADUR® 35-1 (very fast)
  • ARADUR® 340 (very flexible).
  • ARADUR® 3986 (excellent corrosion protection)

Properties

Physical Form
Soluble In

Regulatory & Compliance

Safety & Health

Hazardous Decomposition and Handling Precautions
  • Hazardous decomposition products (when disposed of in fire) carbon monoxide, carbon dioxide and other toxic gases and vapours.
  • Handling Preacutions: Mandatory and recommended industrial hygiene procedures should be followed whenever our products are being handled and processed.

Packaging & Availability

Regional Availability
  • Americas
  • Asia Pacific
  • EIMEA

Storage & Handling

Storage Condition

ARALDITE® PZ 3961-1 should be stored in a dry place, preferably in the sealed original container, at temperatures between 2 and 40°C (temperatures will never be allowed to drop below 0°C). The product must not be stored exposed to freezing or direct sunlight.

Shelf Life Information

Shelf life (at storage temperature between 2 - 40°C) 1 year at least

Other

Appearance
White liquid
Color (SDS)
White
Odor
Slight
Chemical Properties
ValueUnitsTest Method / Conditions
Epoxy Equivalent Weight440.0-500.0 g/eqg/eqISO 3001 on solids
Physical Properties
ValueUnitsTest Method / Conditions
Density1.1 g/cm³g/cm³ISO 1675 at 25°C
Flash Pointmin. 100.0 °C°CPensky-Martens Closed Cup (PMCC)
Flash Pointmin. 100.0 °C°CISO 2719
Viscosity500.0-2000.0 mPa.smPa.sISO 3219 at 23°C
Viscosity500.0-2000.0 mPa.smPa.sRotational Viscometer at 23°C