Title: Neoprene
Additional Names: Duprene; GR-M; polychloroprene; poly(2-chloro-1,3-butadiene)
Literature References: Mol wt range of 100,000-300,000. An oil-resistant synthetic rubber, with predominantly trans configuration made by polymerization of chloroprene. Prepn: W. H. Carothers et al., J. Am. Chem. Soc. 53, 4203 (1931). Review: P. J. Johnson in Kirk-Othmer Encyclopedia of Chemical Technology vol. 8 (Wiley-Interscience, New York, 3rd ed., 1979) pp 515-534.
Properties: d20 approx 1.23. nD20 approx 1.5512. Brittle point: -35°. Softens ca. 80°. Has high tensile strength, resilience and abrasion resistance.
Index of refraction: nD20 approx 1.5512
Density: d20 approx 1.23
Use: In mechanical and automotive products; as wire and cable jackets, gaskets, roof coatings, binder for fibers. |