Ultrafiltration polyimide membrane and its use for recovery of d

Details Ultrafiltration polyimide membrane and its use for recovery of d Ultrafiltration polyimide membrane and its use for recovery of d

1989-12-29

1990-10-16

Foelak, Morton

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

21050039, 264216, 26433112, 521 64, B01D 1300

Patent

active

049633031

ABSTRACT:
Polyimide ultrafiltration membranes made using a single solvent and containing a pore forming agent have been produced and have been found to be useful for recovering dewaxing aid used in dewaxing process.

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"High-Temperature Ultrafiltration Membrane" Sarbolouki, JPL Invention Report 30-4918/NPO-15431, 1982.
"New Polyimide Ultrafiltration Membrane for Organic Use", Iwama et al., Journal of Membrane Science 11, (1982), 297-309.

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