Acrylic synthetic fiber and process for preparation thereof

Details Acrylic synthetic fiber and process for preparation thereof Acrylic synthetic fiber and process for preparation thereof

1992-12-08

1994-09-06

Ryan, Patrick J.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428376, 428400, 428397, 264 41, 264 49, 264 458, 264 459, D02G 300

Patent

active

053447115

ABSTRACT:
An acrylic synthetic fiber having in the transverse section thereof many openings having an indeterminate shape and a size of 0.1 to 1.6 .mu.m, wherein in the interior of the fiber, each opening forms a vein-like or straw-like void extending substantially in parallel to the longitudinal axis of the fiber and having a length of at least 60 .mu.m. This acrylic fiber is prepared by a) dissolving in a suitable solvent an acrylic polymer comprising at least 60 weight % of an acrylonitrile unit and 5 to 20 weight %, based on the weight of the acrylic polymer, of a polyalkylene glycol having a number average molecular weight of 5,000 to 50,000, b) aging the formed spinning solution for at least 4 hours, and c) extruding the spinning solution into a coagulating medium. The acrylic fiber is useful, e.g., as a frictional material comprising (a) a pulpy material made from the acrylic fiber, (b) a resin and (c) a filler.

REFERENCES:
patent: 2788563 (1957-04-01), Stucklik et al.
patent: 3802954 (1974-04-01), Orito et al.
patent: 4346146 (1982-08-01), Kondo et al.
patent: 4347203 (1982-08-01), Mimura et al.
patent: 4643946 (1987-02-01), Brauer et al.
patent: 4663232 (1987-05-01), Kamide et al.

Affiliated with

Also associated with

Rating

Acrylic synthetic fiber and process for preparation thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Acrylic synthetic fiber and process for preparation thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acrylic synthetic fiber and process for preparation thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1328782