FILCO® 7901 is a modified epoxy resin known for its ease of dispersion in water. It presents itself as a yellowish liquid and is recommended as a film for glass fiber sizes specifically designed for direct roving applications. Among its key material features are non-flammability, a soft texture, and tackiness.

Functions: Film Former

Chemical Family: Epoxy & Epoxy Derivatives

Technical Data Sheet

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Identification & Functionality

Composite Materials Functions

Features & Benefits

Labeling Claims
Materials Features
Product Characteristics

FILCO® 7901 is a modified epoxy resin easily dispersible in water.
Characteristics of the dried film:

  • Clear
  • Soft and tacky
  • Easily soluble in styrene.

Applications & Uses

Compatible Reinforcements

FILCO® 7901 is suggested as film former for glass fiber sizes for:

  • Direct roving


Physical Form
Yellowish liquid
Typical Properties
ValueUnitsTest Method / Conditions
Viscosity (at 25°C, #4, 10rpm)5000 - 15000mPa.sMA143LFE
Solid Content72 - 76%MA145LFE
pH (at 20°C)3.5 - 5.5-MA148LFE

Packaging & Availability

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

FILCO® 7901 is supplied in steel drums with an internal polyethylene liner, net weight 200 kg.

Storage & Handling

Shelf Life
6 months
Storage Conditions

FILCO® 7901 should be stored in closed drums away from direct sun rays, at a temperature between + 5°C and + 30°C. Maximum suggested storage time is 6 months from production, in the original package. After that date the product must be rechecked.