Title:
ジアルキルカーボネートの製造方法及び装置、並びにジアリールカーボネート及びポリカーボネートの製造におけるその用途
Document Type and Number:
Japanese Patent JP2005520784
Kind Code:
A
Abstract:
Unexpected corrosion of downstream sections of a dialkyl carbonate manufacturing apparatus has been traced to alkyl chloroformate impurities, which slowly decompose to yield hydrochloric acid. An improved process and apparatus for dialkyl carbonate synthesis reduce corrosion by physically removing or chemically decomposing the alkyl chloroformate impurities within the corrosion-resistant upstream sections of the apparatus. The alkyl chloroformate may be decomposed by passing it through a passageway at a temperature of about 30° C. to about 130° C. for a time of about 0.5 hour to about 10 hours. The passageway may include one or more holding vessels or a tubular section that promotes plug flow.
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Inventors:
Borden, Eugene Polling
Kyle Sam, Ganesh
Larry Nail, Lewis
Nisori, Alberto
Ofori, John Yo
Sanchez Gonzalez, Angel
Vic Fernandez, Ignacio
Kyle Sam, Ganesh
Larry Nail, Lewis
Nisori, Alberto
Ofori, John Yo
Sanchez Gonzalez, Angel
Vic Fernandez, Ignacio
Application Number:
JP2003521186A
Publication Date:
July 14, 2005
Filing Date:
July 30, 2002
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
B01J19/00; C07B61/00; C07C68/00; C07C68/08; C07C69/96; (IPC1-7): C07C68/00; C07C68/08; C07C69/96
Attorney, Agent or Firm:
Kenichi Matsumoto
Hirokazu Ogura
Nobukazu Ito
Toshihisa Kurokawa
Hirokazu Ogura
Nobukazu Ito
Toshihisa Kurokawa