Nylon 4,I: an amorphous polyamide

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Abstract

The melt polymerization of nylon 4, I was studied, starting with nylon-salt and nylon prepolymers (ηinh=0.25). With nylon-salt only low molecular polymers were obtained, while with prepolymers the inherent viscosity could be raised to 0.77 (3h, 270°, vac.). The cyclization of tetra methylene diamine to pyrrolidine seem to be the major disturbing factor. The polymer is glassy and could easily be melt pressed. The torsion modulus of the material at 20°C was high (1.8 109 Pa) and remained high to near its Tg (138°C).
Original languageUndefined
Pages (from-to)1755-1758
JournalPolymer
Volume25
Issue number12
DOIs
Publication statusPublished - 1984

Keywords

  • I
  • amorphous nylon
  • nylon 4
  • IR-69283
  • Tetra methylene diamine
  • isophthalic acid
  • properties
  • polyamide synthesis

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