Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Patent
1993-01-22
1994-12-13
Seccuro, Jr., Carman J.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
428374, 428375, 428395, 264DIG26, 264171, 264174, D01F 806, D01F 812, D01F 814
Patent
active
053728858
ABSTRACT:
A method is disclosed for making thermoplastic bicomponent fibers by contacting under thermally bonding conditions (a) a first component being at least one high performance thermoplastic polymer, such as PET, PBT, nylon or the like, and (b) a second component which is olefinic and which forms at least a portion of the fiber's surface characterized by (b) including at least one grafted olefinic polymer, preferably at least one grafted linear ethylene polymer, having pendant succinic acid or succinic anhydride groups; whereby the fiber is dyeable. The bicomponent fibers made by this process can be in a variety of shapes (e.g., round, oval, trilobal, flat, or hollow) and configurations (e.g., symmetrical sheath/core or side-by-side or asymmetrical crescent/moon). The succinic acid or succinic anhydride groups are provided by grafting, respectively, maleic acid or maleic anhydride onto the linear ethylene polymers especially by a process wherein the grafting is done in a twin-screw, co-rotating extruder with the maleic acid or maleic anhydride being injected into a pressured zone of the extruder. The acid containing grafted linear ethylene polymer or polymer blends are dyeable in contradistinction to ungrafted linear ethylene polymers.
REFERENCES:
patent: 3509013 (1970-04-01), Oppenlander
patent: 4563392 (1986-01-01), Harpell et al.
patent: 4789592 (1988-12-01), Taniguchi et al.
patent: 5018828 (1991-05-01), Ohdaira et al.
patent: 5045401 (1991-09-01), Tabor et al.
patent: 5082899 (1992-01-01), Sawyer et al.
Chisso Corp., Derwent Abstract, AN-85-212633/35.
Bieser John O.
Finlayson Malcolm F.
Jezic Zdravko
Lancaster Gerald M.
Tabor Ricky L.
Seccuro, Jr. Carman J.
The Dow Chemical Company
LandOfFree
Method for making bicomponent fibers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for making bicomponent fibers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making bicomponent fibers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1192308