Title:
使用ずみＰＥＴの資源からのポリエチレンテレフタレートの再生方法
Document Type and Number:
Japanese Patent JP3510885
Kind Code:
B2
Abstract:
A process for removing contaminants from PET components by depolymerising poly ethylene terephthalate ("PET") comprising transesterifying material containing PET by reacting ethanediol having a temperature at or about the boiling point of ethanediol with the material for a predetermined period of time to form a solution containing soluble short chain PET polymers and/or bis (hydroxy ethyl) terephthalate ester ("BHT"); recovering short chain PET polymers and/or BHT and ethanediol; and hydrolysing the recovered short chain PET polymers and/or BHT at elevated pressure and temperature for a predetermined period of time to form an ethanediol solution and crystals of terephthalic acid.
Inventors:
ウエスト，シモン マイクル
Application Number:
JP51970093A
Publication Date:
March 29, 2004
Filing Date:
May 04, 1993
Export Citation:
Assignee:
ペトレサイクル プロプライエタリー リミテッド
International Classes:
C07C67/03; C08G63/12; C08J11/10; C08G63/88; C08J11/06; (IPC1-7): C08J11/10; C08G63/88
Attorney, Agent or Firm:
浅村 皓 （外３名）