FILCO® 7607 is an unsaturated polyester resin offered in a non-ionic water emulsion, designed as a film-former for glass fiber sizings. Its appearance is akin to that of a milky liquid. Notable characteristics of this product include a built-in non-ionic emulsifier within the polymer, a narrow particle size distribution, an extended shelf life due to hydrolytic resistance and fine particle size, high mechanical shear stability when the emulsion is diluted, and exceptional hydrolysis and sedimentation stability across a wide pH range.

Functions: Film Former

Chemical Family: Polyesters, Unsaturated Polyester (UPE)

Processing Methods: Spray Lay-up

Technical Data Sheet

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Identification & Functionality

Composite Materials Functions

Features & Benefits

Product Characteristics
  • Non-ionic emulsifier built in the polymer
  • Narrow particle size distribution
  • High shelf life due to hydrolytic resistance and fine particle size
  • High mechanical shear stability of diluted emulsion
  • Hydrolysis and sedimentation stability in a wide pH range
Characteristics of Film
  • Clear
  • Not tacky
  • Quickly soluble in styrene

Applications & Uses

Compatible Reinforcements
Composites End Use
Composites Processing Methods
Processing Information

FILCO® 7607 is suggested as film former for glass fiber sizes for:

  • Translucent sheet roving
  • Spray up roving


Physical Form
Milky liquid
Typical Properties
ValueUnitsTest Method / Conditions
Solid Content44 - 48%MA145LFE
pH2 - 4-MA148LFE
Particle Size Distribution
ValueUnitsTest Method / Conditions
Average Particle Size250 - 800nmMA147LFE

Packaging & Availability

Regional Availability
  • Canada
  • Mexico
  • USA

Storage & Handling

Shelf Life
8 months
Storage and Stability

FILCO® 7607 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 8 months from production, in the original package. After that date product must be rechecked. Prevent from Freezing.