FILCO® 8902 is a milky liquid high-molecular-weight epoxy resin provided in non-ionic water dispersion. It serves as a film-former for glass fiber sizings, boasting features such as being a pure epoxy resin, possessing hydrolysis and sedimentation stability, as well as high mechanical shear stability in diluted emulsions.

Functions: Film Former

Chemical Family: Epoxy & Epoxy Derivatives

Compatible Polymers & Resins: Unsaturated Polyester (UPE)

Technical Data Sheet

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Identification & Functionality

Composite Materials Functions

Features & Benefits

  • Pure epoxy resin
  • Epoxy Eq. Wt. =2950 g
  • Glass transition temperature Tg = 38°C
  • Hydrolysis and sedimentation stability from pH 2 to 12: min. 48 hours
  • High mechanical shear stability of the diluted emulsion
Characteristics of Film
  • Clear
  • Hard and very slowly soluble in styrene
  • Compatible with unsaturated polyesters

Applications & Uses

Compatible Polymers & Resins
Compatible Reinforcements
Processing Information

FILCO® 8902 is suggested as film former for glass fiber sizes for:



Physical Form
Milky liquid, Off - white emulsion
Typical Properties
ValueUnitsTest Method / Conditions
Solid Content57%MA145LFE
Epoxy Equivalent Weight2950g/eqMA149LFE
Viscosity (at 25°C, #3, 20rpm)1500mPa.sMA143LFE
Particle Size Distribution
ValueUnitsTest Method / Conditions
Average Particle Size900nmMA147LFE

Packaging & Availability

Regional Availability
  • Canada
  • Mexico
  • USA

Storage & Handling

Shelf Life
6 months
Storage and Shelf Life Conditions

FILCO® 8902 should be stored in closed containers away from direct sun rays, at temperature between +5 and +30°C. In these conditions maximum suggested storage time is 6 months from production, in the original package. After that date product must be rechecked. Prevent from freezing.