Title:
【発明の名称】ビスフェノールA中の不純物混入を減少させるための液体真空ポンプシール
Document Type and Number:
Japanese Patent JP2002524541
Kind Code:
A
Abstract:
An improved process for producing Bisphenol-A which is essentially free of sodium impurity using rotary vacuum filter pumps which utilize a liquid ring seal to effect drawing a vacuum on a Bisphenol-A/phenol slurry, the improvement is in using phenol as the liquid ring seal medium.
Inventors:
Kissinger, Gaylord, Michael
Application Number:
JP2000570130A
Publication Date:
August 06, 2002
Filing Date:
June 21, 1999
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
F16J15/40; C07C37/82; C07C37/84; C07C39/16; F04C19/00; (IPC1-7): C07C37/82; C07C39/16; F16J15/40
Attorney, Agent or Firm:
Nobuyuki Kaneda (3 others)