Convenient synthesis of aliphatic polyesters by distannoxane-catalyzed polycondensation.
A convenient synthesis of aliphatic polyesters by the distannoxane-catalyzed polycondensation of aliphatic dicarboxylic acids and aliphatic diols in solvents under azeotropic conditions was developed. To determine the optimum conditions for polycondensation of succinic acid with 1,4-butandiol, the effect of various types of catalyst and their concentration was investigated. By choosing the appropriate solvent, the polymerization was made to proceed in a two-phase system of solvent and molten polymer, and in the presence of 0.001 mol % of 1-chloro-3-hydroxy-1,1,3,3-tetrabutyldistannoxane (CHTD), poly(butylene succinate) (PBS) with a weight-average molecular weight of 277,000 was obtained. This method was then successfully applied to the synthesis of various aliphatic polyesters, such as poly(ethylene succinate), poly(1,4-cyclohexanedimethylene succinate), and poly(ethylene sebacate).
Ishii
M
M
Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Istitute of Technology, Japan.
Okazaki
M
M
Shibasaki
Y
Y
Ueda
M
M
Teranishi
T
T
D001673:Biodegradation, Environmental; D002072:Butylene Glycols / Q000737:chemistry; D002384:Catalysis; D008970:Molecular Weight; D011091:Polyesters / Q000138:chemical synthesis* / Q000378:metabolism; D019802:Succinic Acid / Q000737:chemistry; D014001:Tin
D002072:Butylene Glycols; D011091:Polyesters; D014001:Tin; C039681:1,4-butanediol; D019802:Succinic Acid