Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Patent
1996-05-30
1998-12-08
Edwards, Newton
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
428394, D02G 300
Patent
active
058466541
ABSTRACT:
Spinning polypropylene at relatively high temperatures with delayed quenching, and drawing at relatively high temperatures with moderate draw ratios, provides fibers having an improved tensile factor, especially improved elongation, and can be used to produce fibers also having a high tenacity. The fibers are particularly useful for reinforcement applications when provided in the form of staple fibers and exhibit a tensile factor TE.sup.0.50 of at least about 60, where T is tenacity (gpd) and E is elongation (percent), especially those having a tenacity of at least about 8 gpd and/or an elongation of at least about 25%, and most especially those having a tenacity of at least about 10 gpd and elongations of 50% to 400%.
REFERENCES:
patent: 4261754 (1981-04-01), Krenchel et al.
patent: 4413110 (1983-11-01), Kavesh et al.
patent: 4428775 (1984-01-01), Johnson et al.
patent: 4536536 (1985-08-01), Kavesh et al.
patent: 4542159 (1985-09-01), Johnson et al.
patent: 4769433 (1988-09-01), Chanzy et al.
patent: 5578374 (1996-11-01), Dunbar et al.
F. Kloos, "Dependence of Structure and Properties. . . ," Polypropylene Fibres and Textiles IV, 4th Int'l Conf. on Polypropylene Fibres and Textiles, Univ. of Nottingham, 23-25 Sep. 1987.
M. Ahmed, Polypropylene Fibers--Science and Technology (New York: Elsevier Scientific Pub. Co., 1982), pp. 389-403.
A.J. Rosenthal, "TE.sup.0.5, An Index for Relating Fiber Tenacity and Elongation" Symp. on Polyprop. Fibers, So. Res. Inst., Birmingham, AL 1964 .
Edwards Newton
Hercules Incorporated
Kuller Mark D.
Ruben Bradley N.
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