Manufacture of polyimide-hollow fibres

Details Manufacture of polyimide-hollow fibres Manufacture of polyimide-hollow fibres

2007-12-04

2007-12-04

Greene, Jason M. (Department: 1724)

Gas separation: apparatus

Apparatus for selective diffusion of gases

Hollow fiber or cylinder

C096S008000, C096S013000, C096S014000, C055SDIG007, C264S561000, C264S563000, C264S17800F, C264S209100, C264S211140, C210S500230, C210S500390

Reexamination Certificate

active

10495266

ABSTRACT:
A process for the manufacture of a polyimide hollow fibre comprising: (i) providing a dope solution comprising one or more polyimides dissolved in a solvent comprising 60-100 wt % N-methylpyrollidone and 0-40 wt % ethanol, (ii) providing a bore fluid, (iii) generating a tube of the dope solution filled with the bore fluid, (iv) bringing the product of step (iii) into contact with a coagulation solvent to form a hollow fiber.

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