FILCO® Neoxil 940 is a powdered bisphenolic unsaturated polyester resin known for its light yellow, free-flowing consistency. With its very high molecular weight, it quickly dissolves in styrene, exhibiting a strong binding capability for glass fibers, especially under "hot melt" conditions. Its notable compatibility with unsaturated polyester matrices makes it a preferred choice in various applications requiring strong resin-fiber bonding and rapid dissolution in styrene.

Functions: Resins, Binders & Matrix Materials

Chemical Family: Bisphenols

Compatible Polymers & Resins: Unsaturated Polyester (UPE)

Technical Data Sheet

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Identification & Functionality

Chemical Family
Composite Materials Functions

Features & Benefits

Product Highlights

FILCO® Neoxil 940 is a bisphenolic, unsaturated polyester resin in powder form

  • Very high molecular weight
  • Very quickly soluble in styrene
  • High binding power for glass fibers in "hot melt" operating conditions
  • High degree of compatibility with unsaturated polyester matrices.

Applications & Uses

Compatible Polymers & Resins
Compatible Reinforcements

FILCO® Neoxil 940 main application

  • Styrene soluble binder for chopped strand mat and continous filament mat
  • Binder for preforms
Processing Information

2.5 - 5% of FILCO® Neoxil 940 on the glass weight is normally required according to the weight for square meter and stiffness wanted for glass mat. Water as fine mist is sprayed to help FILCO® Neoxil 940 to stick to glass fibers. After application of FILCO® Neoxil 940 the glass mat is stoved at 180 - 210 °C for 1 - 2 minutes. The operation lets water evaporate and melts FILCO® Neoxil 940 , which accumulates at the contact points of the glass strands, binding them.


Physical Form
Light yellow, free flowing powder
Typical Properties
ValueUnitsTest Method / Conditions
Acid Number10 - 20mg KOH/gMA018LCP
Melt Index (at 125°C)13 - 28g/10 minutesMA109RPL

Packaging & Availability

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

FILCO® Neoxil 940 is supplied in fiber drums with polyethylene bag, net weight 125 kg

Storage & Handling

Shelf Life
12 months
Storage and Shelf Life Conditions

FILCO® Neoxil 940 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 12 months from production, in the original package. After that date the product must be rechecked.