Polypropylene highly spread plexifilamentary fiber

Details Polypropylene highly spread plexifilamentary fiber Polypropylene highly spread plexifilamentary fiber

1992-11-25

1995-07-25

Lesmes, George F.

Stock material or miscellaneous articles

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

Rod, strand, filament or fiber

428357, 428364, 428400, 428397, 264205, 1621575, 5253338, 528491, 528502, D01F 600

Patent

active

054360749

ABSTRACT:
A polypropylene three-dimensional plexifilamentary fiber having a microwave birefringence of 0.07 or more and an Mw/Mn of 4.3 or less. Although a spreading agent is not included in this fiber, the fiber has a superior fiber spreadability and dimensional stability. The fiber in accordance with the present invention can be spun from a dope composed of an isotactic polypropylene having an Mw/Mn of 4.3 or less and an MFR of 20 or less, and a halogenated hydrocarbon, by a flash spinning technique. Further, the present invention provides a spinning dope and a method of manufacturing the fiber which effectively prevent ozone layer destruction by using a 2,2-dichloro-1,1,1-trifluoroethane, a 1,2-dichlorotrifluoroethane or a solvent blended a dichloromethane with either of the above two solvents as the halogenated hydrocarbon.

REFERENCES:
patent: 3564088 (1971-02-01), Woodell
patent: 3641760 (1972-02-01), Keuchel
patent: 3756441 (1973-09-01), Anderson et al.
patent: 4183881 (1980-01-01), Griffin et al.
Encyclopedia of Polymer Science and Engineering, vol. 15, pp. 347-348 John Wiley & Sons, New York (1988).

Affiliated with

Also associated with

Rating

Polypropylene highly spread plexifilamentary fiber does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polypropylene highly spread plexifilamentary fiber, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polypropylene highly spread plexifilamentary fiber will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-738636