L-991 is a 260?F (127?C) curing phenolic prepreg with excellent elevated temperature properties. L-991 is intended to be used as a single ply or multiple ply skin for aramid/phenolic honeycomb in aircraft interior honeycomb sandwich panels. 

Features and Benefits
  • Can be used to create sandwich panels with high peel strength and high toughness 
  • Processing can be easily adapted to most heated presses, autoclaves, or ovens 
  • Excellent laminating prepreg when heat resistance is required 
  • Self-extinguishing per FAR part 25.852


  • Global Business Unit
    Composite Materials


Segments Applications
Public Transportation Interiors

Chemical categories

Chemical category Chemical family Chemical product
Composites Thermoset Phenolic

Region of commercial availability

  • Asia / Pacific
  • Europe / Middle East / Africa
  • North America
  • Latin America

Download documentation for L-991