FILCO® 8004 is a specialized modified epoxy-phenol novolac resin presented in a non-ionic water dispersion, serving as a film former in sizings for glass fiber applications. Functioning as an essential film-forming component, this resin belongs to the chemical family of Phenol and Cresol Epoxy Resins (Novolac) and Epoxy and Epoxy Derivatives. Its unique formulation and role make FILCO 8004 a crucial element in the production of sizings for glass fiber, contributing to the enhancement of overall performance and properties in composite materials.

Functions: Film Former

Chemical Family: Epoxy & Epoxy Derivatives, Phenol & Cresol Epoxy Resins (Novolac)

Technical Data Sheet

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Identification & Functionality

Composite Materials Functions

Features & Benefits

  • Epoxy-phenol novolac resin
  • Non-ionic emulsion
  • Narrow particle size distribution
  • Reduced content of low-molecular weight components
Characteristics of Film
  • Clear, soft
  • Glass transition temperature Tg= 3°C

Applications & Uses

Compatible Reinforcements


Physical Form
Milky liquid
Typical Properties
ValueUnitsTest Method / Conditions
Solid Content54%MA145LFE
Glass Transition Temperature (Tg)32°F-
Epoxy Equivalent Weight250g/eqMA149LFE
pH7 - 9-MA148LFE
Particle Size Distribution
ValueUnitsTest Method / Conditions
Average Particle Size350nmMA147LFE

Packaging & Availability

Regional Availability
  • Canada
  • Mexico
  • USA

Storage & Handling

Shelf Life
6 months
Storage and Shelf Life Conditions

FILCO® 8004 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