FILCO® TAC-453 is a milky liquid unsaturated polyester resin dispersed in a non-ionic medium, designed for use as a film in glass fiber sizing applications. Its key characteristics include having a non-ionic emulsifier built into the polymer, ensuring a narrow particle size distribution, and granting a prolonged shelf life due to resistance against hydrolysis and fine particle size. It also boasts high mechanical shear stability in diluted emulsions and exhibits stability against hydrolysis and sedimentation across a broad pH spectrum.

Functions: Film Former

Chemical Family: Polyesters, Unsaturated Polyester (UPE)

Compatible Polymers & Resins: Unsaturated Polyester (UPE)

Processing Methods: Filament Winding, Pultrusion, Spray Lay-up

Technical Data Sheet

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Identification & Functionality

Composite Materials Functions

Features & Benefits

  • 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
  • Glass transition temperature Tg=12°C
  • Very quickly soluble in styrene
  • Compatible with unsaturated polyesters and other thermosets

Applications & Uses

Compatible Polymers & Resins
Compatible Reinforcements
Composites End Use
Composites Processing Methods
Processing Information

FILCO® TAC-453 is suggested as film former for glass fiber sizes for:

  • Mat roving
  • Translucent sheet roving
  • Spray up roving
  • Filament winding roving – Weaving roving – Pultrusion roving


Physical Form
Milky liquid
Typical Properties
ValueUnitsTest Method / Conditions
Viscosity (at 25°C, #3, 20rpm)700 - 2000mPa.sMA143LFE
Solid Content45 - 49%MA145LFE
pH2.5 - 4-MA148LFE
Particle Size Distribution
ValueUnitsTest Method / Conditions
Average Particle Size300 - 600nmMA147LFE

Packaging & Availability

Regional Availability
  • Canada
  • Mexico
  • USA

Storage & Handling

Shelf Life
15 months
Storage and Shelf Life Conditions

FILCO® TAC-453 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 15 months from production, in the original package. After that date product must be rechecked. Prevent from freezing.