UNSATURATED POLYESTERS

These are thermosetting resins which, when properly catalyzed, convert from a liquid state to an infusible solid.  The polymerization reaction, usually termed "curing", is initiated through the addition of an organic peroxide catalyst and an accelerator.  Polyesters are used for the production of fiberglass-reinforced plastic composites such as boats, translucent building panels, sanitary ware, chemical storage tanks and ducts.  Other uses include clear cast resins, bowling balls, synthetic marbles, furniture parts, and auto body patch compounds.
 
TYPE
APPLICATIONS/CHARACTERISTICS
Gen. purpose, rigid medium reactivity
  • FRP panels, molding surfacing
Rigid, medium reactivity, fast gel
  • Stone craft, wood lamination, fast gel
Pre-promoted, rigid medium reactivity
  • Onyx type of synthetic marble with depth/translucency
Rigid, high reactivity, bisphenol
  • Laminates and molded parts with high chemical resistance
Rigid, high reactivity, isophthalic
  • Gel costs for sanitary wares, synthetic marbles.
  • Water and sewage pipes with good mechanical properties
  • Water and sewage pipes with good mechanical properties. Formulated for very low color, fast gel available
Rigid, low reactivity 
  • Button blanks. Very low color, fast gel
Flexible, low reactivity, isophthalic 
  • Laminates and molded parts with high impact resistance
Resilient, low reactivity 
  • Potting and encapsulating. Very low color
Pre-promoted, resilient, low reactivity
  • Auto body pully. Fast cure, tack-free, good sanding properties

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