FILCO® 345 is an epoxy-novolac polymer carefully formulated within a non-ionic water emulsion. Its notable product characteristics encompass stability against hydrolysis and sedimentation across a broad pH range, ensuring a commendable shelf life. FILCO® 345 serves as an ideal film film within glass fiber sizings, enhancing the reinforcement of both thermoplastic and thermosetting resins.

Functions: Film Former

Chemical Family: Bisphenol Epoxy Resins, Bisphenol F Type Epoxy, Epoxy & Epoxy Derivatives, Novolac Epoxy

Compatible Polymers & Resins: Epoxies (EP), Phenolic Resins

Technical Data Sheet

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Identification & Functionality

Composite Materials Functions

Features & Benefits

Labeling Claims

FILCO® 345 is an epoxy-novolac polymer in non ionic water emulsion.

  • Epoxy equivalent ~ 200
  • Hydrolysis and sedimentation stability in a wide pH range
  • Good shelf life.
Characteristics of Film
  • Clear
  • Tacky
  • Compatible with epoxy, phenolic and thermoplastic matrices.

Applications & Uses

Compatible Polymers & Resins
Compatible Reinforcements

FILCO® 345 can be used as film former for glass fiber sizes for the reinforcement of thermoplastic and thermosetting resins


Physical Form
Milky liquid
Typical Properties
ValueUnitsTest Method / Conditions
Viscosity (at 25°C, #2, 20rpm)100mPa.sMA143LFE
Solid Content50%MA145LFE
pH (at 20°C)7.5-MA148LFE
Epoxy Equivalent Weight (on dry resin)200gMA149LFE

Packaging & Availability

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

FILCO® 345 is supplied in steel drums with a polyethylene liner, net weight 200 kg .

Storage & Handling

Shelf Life
6 months
Storage and Shelf Life Conditions

FILCO® 345 should be stored in closed containers at temperatures between 5° C and 30°C. In these conditions, maximum suggested storage time is 6 months from production, in the original package. After that date the product must be rechecked. During storge a slight settlement can take place, wich can easily be eliminated by careful stirring.