FILCO® 665 MG050 represents a bisphenolic, unsaturated polyester resin available in powder form, serving as a styrene-soluble binder specifically tailored for glass mat applications. It maintains a physical form as a powder, belonging to the chemical family Unsaturated Polyester (UPE). Within composite materials, its roles encompass functioning as a resin, binder, and matrix material, showcasing compatibility with glass fiber reinforcements.

Functions: Resins, Binders & Matrix Materials

Chemical Family: Bisphenols, Polyesters, Unsaturated Polyester (UPE)

Technical Data Sheet

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Identification & Functionality

Composite Materials Functions

Applications & Uses

Compatible Reinforcements
Processing Information

2.5 - 5% of FILCO® 665 MG050 on the glass weight is normally required, according to the weight per square meter and requested stiffness of glass mat. Water as fine mist is used to help FILCO® 665 MG050 to stick to glass fibers


Physical Form
Light straw powder
Typical Properties
ValueUnitsTest Method / Conditions
Zinc Stearate Content0.5%MA123LFE
Acid Number10 - 20mg KOH/gMA018LCP
Particle Size Distribution
ValueUnitsTest Method / Conditions
Particle Size (>500 μm)0%MA123LFE
Particle Size (>425 μm)max. 1%MA123LFE
Particle Size (>250 μm)27%MA123LFE
Particle Size (>180 μm)25%MA123LFE
Particle Size (>125 μm)20%MA123LFE
Particle Size (>75 μm)14%MA123LFE
Particle Size (>45 μm)10%MA123LFE
Particle Size (<45 μm)max. 5%MA123LFE

Packaging & Availability

Regional Availability
  • Canada
  • Mexico
  • USA

Storage & Handling

Shelf Life
24 months
Storage and Shelf Life Conditions

FILCO® 665 MG050 should be stored in closed containers away from direct sun rays and source of heat, at temperature below 30°C. In these conditions, maximum suggested storage time is 24 months from production, in the original package. After that date product must be rechecked.