【発明の名称】超濾過条件下で芳香族溶媒を回収するためのポリイミド膜

Title:

【発明の名称】超濾過条件下で芳香族溶媒を回収するためのポリイミド膜

Document Type and Number:

Japanese Patent JP2002521190

Kind Code:

A

Abstract:

Improved asymmetric hyperfiltration membranes and their method of preparation and use are disclosed. The membranes are fashioned from polyimides and conditioned with a lubricating oil. Permselective separation of aromatic hydrocarbons from non-aromatic hydrocarbons in a feed stream may be accomplished using the membranes under hyperfiltration conditions.

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Inventors:

White, lloyd stephen

Application Number:

JP2000562135A

Publication Date:

July 16, 2002

Filing Date:

July 12, 1999

Export Citation:

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Assignee:

W R GRACE & CO-CONN

International Classes:

B01D61/02; B01D67/00; B01D71/64; C08J7/00; C10G31/11; (IPC1-7): B01D71/64; B01D61/02; C08J7/00

Domestic Patent References:

JPH08257381A	1996-10-08
JPS6035091A	1985-02-22
JPH07507494A	1995-08-24
JPS60229986A	1985-11-15
JPH04282325A	1992-10-07
JPS60235607A	1985-11-22
JPH09262446A	1997-10-07

Foreign References:

WO1994025146A1

1994-11-10

Attorney, Agent or Firm:

Kazuo Shamoto (5 outside)

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