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A manufactured fiber prepared from polymers containing a urea group in the repeating unit. Polyurea was first manufactured in the 1940's. By 1958, small amounts were being commercially produced in Japan and sold as Urylon. However, the process is expensive and the fiber has not been widely used. Polyurea fibers are similar to Nylon and have good resistance to solvents, acids, sunlight and insects. It is used primarily in fishing lines, nets, and ropes.

Synonyms and Related Terms

Urylon [Toyo Koatsu Industries]

Other Properties

Resistant to acids, alkalis and most organic solvents. Fiber is smooth. Cross section is circular. Tenacity = 4.5-5.5 g/denier; Elongation 15-20%; Moisture regain = 1.8%

Melting Point 240
Density 1.07
Molecular Weight Softening pt = 205 C

Additional Information

° G.Cook, Handbook of Textile Fibres:II. Man-made Fibres, 5th edition, Merrow Publishing Co., Durham, England, 1984. p.707.

° Polyurea Development Association: Website

Sources Checked for Data in Record

  • J.Gordon Cook, Handbook of Textile Fibres:II Man-made Fibres, Merrow Publishing Co. , Durham, England