FILCO® 306 is an epoxy resin crafted in a nonionic water emulsion, characterized by several key traits, including a pure epoxy resin composition, a narrow particle size distribution, stability against hydrolysis and sedimentation, a good shelf life, and robust mechanical shear stability even in diluted emulsions.

Functions: Film Former

Chemical Family: Epoxy & Epoxy Derivatives

Compatible Polymers & Resins: Epoxies (EP), Phenolic Resins, Unsaturated Polyester (UPE)

Processing Methods: Filament Winding, Pultrusion

Technical Data Sheet

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Enhanced TDS

Identification & Functionality

Chemical Family
Composite Materials Functions
Product Families

Features & Benefits

Labeling Claims
Materials Features
Product Highlights

FILCO 306 is an epoxy resin in non ionic water emulsion.

  • Pure epoxy resin
  • Epoxy equivalent ~ 330
  • Narrow particle size distribution
  • Hydrolysis and sedimentation stability from pH 2 to 12 : min 48 h
  • Good shelf life
  • High mechanical shear stability of the diluted emulsion
Characteristics of Film

Characteristics of the dried film:

  • Clear, tacky
  • Less soft then the film of FILCO 309
  • Compatible with unsaturated polyester, epoxy, phenolic matrices
  • Quickly soluble in styrene

Applications & Uses

Compatible Polymers & Resins
Compatible Reinforcements
Composites Processing Methods

FILCO® 306 is suggested as film former for glass fiber sizes for:

  •  filament winding roving
  •  pultrusion roving
  •  woven roving


Physical Form
Milky liquid
Typical Properties
ValueUnitsTest Method / Conditions
Viscosity (at 25°C, #3, 20rpm)1000 - 2500mPa.sMA143LFE
Solid Content48 - 52%MA145LFE
pH (at 20°C)5.5 - 7.5-MA148LFE
Epoxy Equivalent Weight (on dry resin)300 - 360gMA149LFE
Particle Size Distribution
ValueUnitsTest Method / Conditions
Average Particle Size150 - 600nmMA147LFE

Packaging & Availability

Packaging Type
Regional Availability
  • Canada
  • Mexico
  • USA
Packaging Information

FILCO® 306 is supplied in steel drums with polyethylene liner, net weight 200 kg .

Storage & Handling

Shelf Life
12 months
Storage and Shelf Life Conditions

FILCO® 306 should be stored in closed container away from sun rays, at temperatures between 5° C and 30°C. In these conditions, maximum suggested storage time is 12 months from production, in the original package. After that date the product must be rechecked. During storge a slight settlement can take place, which can easily be eliminated by careful stirring.