FILCO® 659 is an unsaturated polyester resin, presented in powder form and incorporating a catalyst. Classified under the polymer name 'Thermoset Polyester,' it exists in a powdered physical form and functions as a resin, binder, and matrix material within composite materials.

Polymer Name: Thermoset Polyester

Chemical Family: Polyesters

Technical Data Sheet

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Identification & Functionality

Additives Included
Chemical Family
Composite Materials Functions


Physical Form
White powder
Typical Properties
ValueUnitsTest Method / Conditions
Acid Number35 - 45mg KOH/gMA018LCP
Particle Size Distribution
ValueUnitsTest Method / Conditions
Particle Size (>425 μm)max. 2%MA123LFE
Particle Size (>250 μm)2 - 10%MA123LFE
Particle Size (>180 μm)15 - 35%MA123LFE
Particle Size (>125 μm)15 - 35%MA123LFE
Particle Size (>75 μm)15 - 35%MA123LFE
Particle Size (>45 μm)6 - 18%MA123LFE
Particle Size (Passing Through)6 - 18%MA123LFE

Packaging & Availability

Regional Availability
  • Canada
  • Mexico
  • USA

Storage & Handling

Shelf Life
6 months
Storage and Shelf Life Conditions

The shelf life of FILCO® 659 is 6 months from production date, when stored in sealed original container. FILCO® 659 should be stored at temperatures below 25°C, far from direct sun rays