Resin or rubber article reinforced with a polyolefin fiber havin

Details Resin or rubber article reinforced with a polyolefin fiber havin Resin or rubber article reinforced with a polyolefin fiber havin

1991-03-11

1992-09-01

Kendell, Lorrain T.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

428224, 428284, 428286, 428288, 428290, 428292, 428364, 428373, 525 55, 525191, 525416, C08L 2300, D02G 300

Patent

active

051439778

ABSTRACT:
Disclosed is a polyolefin fiber having an improved initial elongation, which comprises a strongly drawn body of a composition comprising ultra-high-molecular-weight polyethylene and an ultra-high-molecular-weight copolymer of ethylene with an olefin having at least 3 carbon atoms at such a ratio that the content of the olefin having at least 3 carbon atoms in the entire composition is such that the number of side chains per 1000 carbon atoms in the composition is 0.2 to 5.0 on the average, and having an intrinsic viscosity (.eta.) of at least 5 dl/g as the entire composition, wherein the strongly drawn body has at least two crystal melting endothermic peaks, close to each other, in the region of temperature higher by at least 15.degree. C. than the inherent crystal melting temperature (Tm) of the composition determined as the main melting endothermic peak at the second temperature elevation when measured in the restrained state by a differential scanning calorimeter.

REFERENCES:
patent: 4344908 (1982-08-01), Smith et al.
patent: 4344908 (1982-08-01), Smith et al.
patent: 4422993 (1983-12-01), Smith et al.
patent: 4455273 (1984-06-01), Harpell et al.
patent: 4504432 (1985-03-01), Kamei et al.
patent: 4737402 (1988-04-01), Harpell et al.
patent: 4842922 (1989-06-01), Krupp et al.

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