6735. Nylon 46
Nomenclature
CAS number: 50327-22-5
Poly[imino-1,4-butanediylimino(1,6-dioxo-1,6-hexanediyl)]; poly(tetramethyleneadipamide); Stanyl (DSM). Description and references
Symmetrical polyamide with higher melting point and greater tensile strength than nylon 66 or nylon 6, q.v. Prepn from 1,4-diaminobutane and adipic acid: W. H. Carothers, US 2130948 (1938 to Du Pont). Improved process: E. H. J. P. Bour, J. M. M. Warnier, EP 77106 corresp to US 4463166 (1983, 1984 both to Stamicarbon). Account of prepn by melt polymerization, physical properties: R. J. Gaymans et al., J. Polym. Sci. Polym. Chem. Ed. 15, 537 (1977). Brief account: D. O'Sullivan, Chem. Eng. News 62, 33 (May 21, 1984).
