Title:
【発明の名称】アミノカルボン酸廃棄物質のアミドカルボン酸へのリサイクル方法
Document Type and Number:
Japanese Patent JPH10508600
Kind Code:
A
Abstract:
This invention relates to a process for recycling waste material selected from amino-carboxylic acid oligomers or polymers and amido-carboxylic acid oligomers or polymers into amido-carboxylic acids. A mixture containing water, an oligomeric or polymeric waste material, and a carboxylic acid is heated. The mixture is cooled to obtain a two phase system containing an aqueous phase and an organic phase which are separated. Carboxylic acids, unreacted starting materials, and the monomeric amido-carboxylic acid product are distilled from the organic phase. The remaining solid residue composed of high boiling oligomeric amino-carboxylic acids is recycled into Step (A).
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Inventors:
Zima, George Chester
McChessney, Garry Wesley
Domaine, Yugo Jean Marie
William Hughes, Thomas Hugh
McChessney, Garry Wesley
Domaine, Yugo Jean Marie
William Hughes, Thomas Hugh
Application Number:
JP51534296A
Publication Date:
August 25, 1998
Filing Date:
October 26, 1995
Export Citation:
Assignee:
Eastman Chemical Company
International Classes:
C08J11/00; C07C231/02; C07C233/47; C08G69/16; C08G69/46; C08J11/10; (IPC1-7): C07C233/47; C07C231/02; C08J11/00; C08J11/10
Attorney, Agent or Firm:
Takashi Ishida (2 outside)