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[DuPont] A registered trademark for a type of Acetal resin. Delrin, first marketed in 1959 by DuPont, is a polymer of Formaldehyde. It is an extremely hard and durable thermoplastic with excellent dimensional stability and chemical resistance. Delrin is used for injection molded parts and numerous automotive supplies.

Synonyms and Related Terms

POM; polyoxymethylen, acetal resin; Ertacetal [Quadrant]; Celcon {Ticona]; Hostaform [Ticona]; Ultraform [BASF]



Physical and Chemical Properties

  • Resistant to acids, alkalis and most solvents.
  • Density = 1.41-1.43 g/ml
  • TAP Plastics: Technical data sheet

Resources and Citations

  • DuPont: Website
  • Dupont: Delrin
  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p.791
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • History of Plastics:

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