TY - JOUR
T1 - Determination of the individual cyclic oligomers in equilibrium systems from E-caprolactam and water
AU - Heikens, D.
PY - 1956
Y1 - 1956
N2 - The contents of cyclic dimer, trimer, and tetramer in equil. polymers were detd. by fractional sublimation of a MeOH ext. The sublimation temps. are 223 Deg, 254 Deg, and 282 Deg (with decompn.) for the di-, tri-, and tetramer, resp. The proportion of cyclic di-, tri-, and tetramer is 2:1:2 (221.5 Deg) and 5:2:7 (253.5 Deg). The formation of H bonds between pairs of NHCO groupings is believed responsible for the stability of the tetramer. [on SciFinder (R)]
AB - The contents of cyclic dimer, trimer, and tetramer in equil. polymers were detd. by fractional sublimation of a MeOH ext. The sublimation temps. are 223 Deg, 254 Deg, and 282 Deg (with decompn.) for the di-, tri-, and tetramer, resp. The proportion of cyclic di-, tri-, and tetramer is 2:1:2 (221.5 Deg) and 5:2:7 (253.5 Deg). The formation of H bonds between pairs of NHCO groupings is believed responsible for the stability of the tetramer. [on SciFinder (R)]
U2 - 10.1002/recl.19560751015
DO - 10.1002/recl.19560751015
M3 - Article
SN - 0165-0513
VL - 75
SP - 1199
EP - 1204
JO - Recueil des Travaux Chimiques des Pays-Bas
JF - Recueil des Travaux Chimiques des Pays-Bas
IS - 10
ER -