Nylon 4 is made from polypyrrolidine and sold as the fiber "Alrac". Nylon 4 has more frequent amide groups than other nylons. It produces a fiber that has many of the characteristics of cotton. Nylon 4 can absorb moisture and it accepts dyes well. It does not collect static charge and has good pressability.
See Nylon fiber.
Synonyms and Related Terms
Alrac [Radiation Research]; polypyrrolidine
Physical and Chemical Properties
- Decomposes at 265 C
- Tenacity = 4.5 g/denier
- Moisture regain = 8%
- Melting Point = 273 C
- Density = 1.18 g/ml
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 555
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Marjory L. Joseph, Introductory Textile Science, Holt, Rinehart and Winston, Fort Worth, TX, 1986
- J.Gordon Cook, Handbook of Textile Fibres:II Man-made Fibres, Merrow Publishing Co. , Durham, England, p. 310.