Ethylene-vinyl alcohol hollow fiber membrane and method for the

Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

2105002, 264 41, 264185, 2642091, 264561, B29D 2704

Patent

active

043850944

ABSTRACT:
There is provided a hollow fiber membrane of ethylene-vinyl alcohol copolymer which is produced by a process comprising extruding a spinning solution of an ethylene-vinyl alcohol copolymer in a solvent selected from the group consisting of dimethylsulfoxide, dimethylacetamide, pyrrolidone, N-methylpyrrolidone and mixtures thereof through a hollow fiber spinneret while a liquid coagulant is introduced into a central aperture of said spinneret, passing the spun fiber through a gaseous atmosphere in a manner such that the fiber is drawn 0.5 to 20 times its extrusion rate and then coagulating said fiber in a coagulating bath at a temperature within the range satisfying the following relationship:

REFERENCES:
patent: 3975478 (1976-08-01), Leonard
patent: 4071454 (1978-01-01), Yamamoto et al.
patent: 4084036 (1978-04-01), Leonard
patent: 4220543 (1980-09-01), Yamashita
patent: 4234431 (1980-11-01), Mishiro et al.
patent: 4240993 (1980-12-01), Sun
patent: 4269713 (1981-05-01), Yamashita et al.
patent: 4279752 (1981-07-01), Sueoka et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Ethylene-vinyl alcohol hollow fiber membrane and method for the does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ethylene-vinyl alcohol hollow fiber membrane and method for the , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ethylene-vinyl alcohol hollow fiber membrane and method for the will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2146443

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.