D.E.N.® 426

D.E.N.® 426 is a liquid reaction product of epichlorohydrin and phenol-formaldehyde novolac. D.E.N. 426 Epoxy Novolac Resin is an epoxidized phenolic resin of higher functionality than standard bisphenol A based liquid epoxy resins. Epoxy novolac resins combine, in one molecule, the thermal stability of a phenolic backbone with the reactivity and versatility of an epoxy. They are distinguished by particular good thermal stability, mechanical strength and resistance against chemicals. They find ready acceptance for lining pipelines, storage tanks and pumps. D.E.N.® 426 has been developed to fill the gap between the two functional standard bisphenol F based liquid epoxy resins and the high viscous epoxy novolac resins.

Principal: Olin Epoxy

Chemical Family: Epoxy & Epoxy Derivatives, Novolac Epoxy

Polymer Name: Epoxy Resins & Compounds

End Uses: Automotive Applications, Electrical Laminates, Pipe Coating, Pre-pregs, Protective Coatings, Sporting Goods, Structural Adhesive, Tank Lining

Compatible Substrates & Surfaces: Composites

Processing Methods: Casting, Encapsulation, Potting

Features: Acid Resistance, Corrosion Resistance, High Reactivity, High Temperature Performance, High Viscosity, Improved Chemical Resistance, Improved Gap Filling Properties, Improved Mechanical Resistance, Increased Mechanical Strength, Low Shrinkage, Low Viscosity, Solvent Resistance, Thermal Stability

Enhanced TDS

Identification & Functionality

Blend
No
CASE Ingredients Functions
Chemical Family
Chemical Name
Composite Materials Functions
Country of Origin
Function
Resins, Binders & Matrix Materials, Binder
Polymer Name
Product Code
MITM10919
Single Ingredient
Yes
Technologies
Product Families

Features & Benefits

CASE Ingredients Features
Materials Features
Key Features
  • D.E.N.® 426 Epoxy Novolac Resin is an epoxidized phenolic resin of higher functionality than standard bisphenol A based liquid epoxy resins.
  • Epoxy novolac resins combine, in one molecule, the thermal stability of a phenolic backbone with the reactivity and versatility of an epoxy.
  • They are distinguished by particular good thermal stability, mechanical strength and resistance against chemicals.
  • They find ready acceptance for lining pipelines, storage tanks and pumps.
  • D.E.N.® 426 Epoxy Novolac Resin has been developed to fill the gap between the two functional standard bisphenol F based liquid epoxy resins and the high viscous epoxy novolac resins.
  • The multi-functionality, ± 2.6 epoxy groups per mole, of D.E.N.® 426 Epoxy Novolac Resin produces a more tightly cross-linked cured system than bisphenol A based liquid epoxy resins having improved high temperature performance and improved resistance against various chemical.
  • D.E.N.® 426 Epoxy Novolac Resin can be formulated to fully cure at ambient temperatures with the corresponding curing agents without the need of additional heat cure.

Applications & Uses

Properties

Physical Form

Packaging & Availability

Packaging Type

Principal Information

Group Principal Number
S002520
Principal

Other

Color (SDS)
Yellow to brown
IATA/ICAO Proper Shipping Name
Environmentally hazardous substance, liquid, N.O.S. (epoxy resin)
IATA/ICAO UN Number
UN3082
IMO/IMDG Proper Shipping Name
Environmentally hazardous substance, liquid, N.O.S. (epoxy resin)
IMO/IMDG UN Number
UN3082
Item Number
Odor (SDS)
Mild
Protect from Freezing
Yes
Temperature Control
Yes
USA/DOT UN Number
Not Applicable
Chemical Properties
ValueUnitsTest Method / Conditions
Epoxide Equivalent Weight164.0-177.0 g/eqg/eqASTM D1652
Material Composition
ValueUnitsTest Method / Conditions
Hydrolysable Chloride Contentmax. 1200.0 ppmppmASTM D1726
Optical Properties
ValueUnitsTest Method / Conditions
Color Scalemax. 250.0 Pt-CoPt-Co2b889752-a817-4a6e-bd49-029825e637fd
Physical Properties
ValueUnitsTest Method / Conditions
Density1.2 g/cm³g/cm³ASTM D4052 at 25°C
Storage Temperaturemax. 77.0 °F°F
Viscosity18000.0-23000.0 mPa.smPa.sASTM D445 at 25°C, absolute
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Flash Point (SDS)min. 200.0 °C°CDIN 51584
Relative Density (SDS)1.16-1.22-Water = 1
Solubility In Water (SDS)max. 1.0 %%at 25°C
Viscosity (SDS)18000.0-23000.0 mPa.smPa.sASTM D445 at 25°C
Shelf Life & Stability
ValueUnitsTest Method / Conditions
Shelf Life730.0 dd