TY - JOUR
T1 - Alternating polyesteramides based on 1,4-butylene terephthalamide
T2 - 1. Synthesis of the bisterdiamide
AU - Serrano, P.J.M.
AU - van Bennekom, A.C.M.
AU - Gaymans, R.J.
PY - 1998
Y1 - 1998
N2 - The bisesterdiamide T4T dimethyl (one and a half repeat units of 1,4-butylene terephthalamide, nylon-4,T) (benzoic acid, 4,4′-[1,4-butanediylbis(iminocarbonyl)]bis-, dimethyl ester, CAS no. 1028 10-33-3) has been synthesized from an excess of dimethyl terephthalate and 1,4-butanediamine. Lithium methanolate was used as a catalyst. Different solvents have been used to optimize the yield and purity. A pure product could be obtained by recrystallization from hot NMP. D.s.c. and n.m.r. analyses were used to determine the purity of the product. The melting temperature of the T4T dimethyl (Tm=265°C) decreased with increasing loss of uniformity. The T4T dimethyl showed a transition in the crystalline structure upon heating at 160–175°C.
AB - The bisesterdiamide T4T dimethyl (one and a half repeat units of 1,4-butylene terephthalamide, nylon-4,T) (benzoic acid, 4,4′-[1,4-butanediylbis(iminocarbonyl)]bis-, dimethyl ester, CAS no. 1028 10-33-3) has been synthesized from an excess of dimethyl terephthalate and 1,4-butanediamine. Lithium methanolate was used as a catalyst. Different solvents have been used to optimize the yield and purity. A pure product could be obtained by recrystallization from hot NMP. D.s.c. and n.m.r. analyses were used to determine the purity of the product. The melting temperature of the T4T dimethyl (Tm=265°C) decreased with increasing loss of uniformity. The T4T dimethyl showed a transition in the crystalline structure upon heating at 160–175°C.
KW - Bisesterdiamides
KW - 1,4-butanediamine
KW - Dimethyl terephthalate
U2 - 10.1016/S0032-3861(97)10389-5
DO - 10.1016/S0032-3861(97)10389-5
M3 - Article
VL - 39
SP - 5773-
JO - Polymer
JF - Polymer
SN - 0032-3861
IS - 23
ER -