SYNTHESIS OF POLYMERS IN AQUEOUS-SOLUTIONS - SYNTHESIS OF POLYESTERS BY REACTIONS OF DICARBOXYLIC-ACIDS WITH ALKYLENE DIHALIDES USING 1,8-DIAZABICYCLO[5.4.0]UNDEC-7-ENE IN AQUEOUS-SOLUTIONS

Authors
YAMADA Y KAMEYAMA A NISHIKUBO T
Citation
Y. Yamada et al., SYNTHESIS OF POLYMERS IN AQUEOUS-SOLUTIONS - SYNTHESIS OF POLYESTERS BY REACTIONS OF DICARBOXYLIC-ACIDS WITH ALKYLENE DIHALIDES USING 1,8-DIAZABICYCLO[5.4.0]UNDEC-7-ENE IN AQUEOUS-SOLUTIONS, Polymer Journal, 29(11), 1997, pp. 899-903
Citations number
18
Journal title
Polymer Journal → ACNP
ISSN journal
00323896
Volume
29
Issue
11
Year of publication
1997
Pages
899 - 903
Database
ISI
SICI code
0032-3896(1997)29:11<899:SOPIA->2.0.ZU;2-O
Abstract
The polycondensation of adipic acid with m-xylylene dibromide was perf ormed using 1,8-diazabicyclo-[5.4.0]undec-7-ene (DBU) as a base in mix tures of dimethyl sulfoxide (DMSO) with water or in plain water. The r eactions proceeded smoothly even in water to give the corresponding po lyesters, although the rate of the reaction decreased gradually with i ncreasing water in the mixture. Polymers prepared in the aqueous solut ion had higher molecular weights (M-n, 7700-9200)than the polymers syn thesized in DMSO (M-n, 6100-6400).