公开(公告)号：DE60011960D1

公开(公告)日：2004-08-12

申请号：DE60011960

申请日：2000-07-11

Applicant: DAICEL CHEM

Inventor： UEDA MITSURU ,  TAKAHASHI HIROYUKI ,  HAYAKAWA TERUAKI ,  TERANISHI TADASHI

IPC: C08G63/16 ,  C08G63/85

Abstract: The present invention is a process for producing a polyester from a dicarboxylic acid and a diol, which comprises polycondensing the dicarboxylic acid and the diol under the presence of a distannoxane catalyst. Also, the present invention is a process for producing a polyester which comprises melt polycondensing the dicarboxylic acid and the diol under normal pressure in the presence of the distannoxane catalyst, wherein an organic solvent which dose not dissolve any of the dicarboxylic acid, the diol and the polyester produced from the dicarboxylic acid and the diol is present and, whereby, two phases are mainly present.

公开(公告)号：DE60011960T2

公开(公告)日：2005-08-04

申请号：DE60011960

申请日：2000-07-11

Applicant: DAICEL CHEM

Inventor： UEDA MITSURU ,  TAKAHASHI HIROYUKI ,  HAYAKAWA TERUAKI ,  TERANISHI TADASHI

IPC: C08G63/16 ,  C08G63/85

Abstract: The present invention is a process for producing a polyester from a dicarboxylic acid and a diol, which comprises polycondensing the dicarboxylic acid and the diol under the presence of a distannoxane catalyst. Also, the present invention is a process for producing a polyester which comprises melt polycondensing the dicarboxylic acid and the diol under normal pressure in the presence of the distannoxane catalyst, wherein an organic solvent which dose not dissolve any of the dicarboxylic acid, the diol and the polyester produced from the dicarboxylic acid and the diol is present and, whereby, two phases are mainly present.

公开(公告)号：JP2001302776A

公开(公告)日：2001-10-31

申请号：JP2000124409

申请日：2000-04-25

Applicant: DAICEL CHEM

Inventor： UEDA MITSURU ,  TAKAHASHI HIROYUKI ,  HAYAKAWA TERUAKI ,  TERANISHI TADASHI

IPC: C08G63/85 ,  C08L101/16

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a polyester, particularly aliphatic polyesters which can easily obtain polymers having a high degree of polymerization with good industrial efficiency. SOLUTION: This method for manufacturing a polyester is a method of manufacturing a polyester from a dicarboxylic acid and a diol and comprises subjecting the dicarboxylic acid and the diol to solution polycondensation under normal pressures in the presence of a distannoxane catalyst by allowing a solvent which does not dissolve any of the dicarboxylic acid, the diol, and a polyester to be formed from the dicarboxylic acid and the diol to be present together to form a state such that mainly two phases exist.