Propylene polymer fibers and yarns
First Claim
Patent Images
1. Fiber comprising propylene polymer and having an Apparent Average Microfibril Diameter of at least 240 Å
- , wherein the Apparent Average Microfibril Diameter is a value calculated from small angle X-ray diffraction measurements, with the fiber positioned such that its longitudinal axis is perpendicular to the X-ray beam and with the fiber positioned such that its longitudinal axis is disposed at an angle, α
, from the perpendicular to the X-ray beam, as an average of ##EQU5## at the angles, α
, of 10° and
20°
, and wherein Im (0) is maximum intensity of the small angle X-ray meridional reflection with the fiber positioned such that its longitudinal axis is perpendicular to the X-ray beam,Im (α
) is maximum intensity of the small angle X-ray meridional reflection with the fiber positioned such that its longitudinal axis is inclined at the angle, α
, from the perpendicular to the X-ray beam, ##EQU6## and .sub.φ
m is an angular position, in radians, of the center of the small angle X-ray meridional reflection at half height relative to the center of the incident X-ray beam with the fiber positioned such that its longitudinal axis is perpendicular to the X-ray beam,and wherein the small angle X-ray diffraction is conducted with CuKα
radiation having a wavelength of 1.5418 Å and
the X-ray beam is slit collimated to an angular width at half height of 1.81 minutes.
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Abstract
Propylene polymer fibers are characterized by a unique crystalline microstructure as determined by small angle X-ray diffraction. The fibers and yarns comprising same exhibit improved recovery from compression and bending and are suited for a wide range of applications including geotextile, apparel and upholstery fabrics, carpet yarns and other textile products.
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Citations
34 Claims
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1. Fiber comprising propylene polymer and having an Apparent Average Microfibril Diameter of at least 240 Å
- , wherein the Apparent Average Microfibril Diameter is a value calculated from small angle X-ray diffraction measurements, with the fiber positioned such that its longitudinal axis is perpendicular to the X-ray beam and with the fiber positioned such that its longitudinal axis is disposed at an angle, α
, from the perpendicular to the X-ray beam, as an average of ##EQU5## at the angles, α
, of 10° and
20°
, and wherein Im (0) is maximum intensity of the small angle X-ray meridional reflection with the fiber positioned such that its longitudinal axis is perpendicular to the X-ray beam,Im (α
) is maximum intensity of the small angle X-ray meridional reflection with the fiber positioned such that its longitudinal axis is inclined at the angle, α
, from the perpendicular to the X-ray beam, ##EQU6## and .sub.φ
m is an angular position, in radians, of the center of the small angle X-ray meridional reflection at half height relative to the center of the incident X-ray beam with the fiber positioned such that its longitudinal axis is perpendicular to the X-ray beam,and wherein the small angle X-ray diffraction is conducted with CuKα
radiation having a wavelength of 1.5418 Å and
the X-ray beam is slit collimated to an angular width at half height of 1.81 minutes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
- , wherein the Apparent Average Microfibril Diameter is a value calculated from small angle X-ray diffraction measurements, with the fiber positioned such that its longitudinal axis is perpendicular to the X-ray beam and with the fiber positioned such that its longitudinal axis is disposed at an angle, α
-
26. Fiber comprising propylene polymer and having an Apparent Average Microfibril Diameter of about 240 Å
- to about 500 Å
, wherein the Apparent Average Microfibril Diameter is a value calculated from small angle X-ray diffraction measurements, with the fiber positioned such that its longitudinal axis is perpendicular to the X-ray beam and with the fiber positioned such that its longitudinal axis is disposed at an angle, α
, from the perpendicular to the X-ray beam, as an average of ##EQU7## at the angles, α
, of 10° and
20°
, and wherein Im (0) is maximum intensity of the small angle X-ray meridional reflection with the fiber positioned such that its longitudinal axis is perpendicular to the X-ray beam,Im (α
) is maximum intensity of the small angle X-ray meridional reflection with the fiber positioned such that its longitudinal axis is inclined at the angle, α
, from the perpendicular to the X-ray beam, ##EQU8## and .sub.φ
m is an angular position, in radians, of the center of the small angle X-ray meridional reflection at half height relative to the center of the incident X-ray beam with the fiber positioned such that its longitudinal axis is perpendicular to the X-ray beam,and wherein the small angle X-ray diffraction is conducted with CuKα
radiation having a wavelength of 1.5418 Å and
the X-ray beam is slit collimated to an angular width at half height of 1.81 minutes. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
- to about 500 Å
Specification
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Current AssigneePropex Inc. (Solmax International Incorporated)
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Original AssigneeBP Amoco (BP PLC)
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InventorsSlutsker, Leonid, Norris, Richard Tutt Jr., Bersted, Bruce Howard, Stokes, Ty Jackson
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Primary Examiner(s)EDWARDS, NEWTON O
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Application NumberUS08/927,384Time in Patent Office718 DaysField of Search428/364, 428/395, 428/359US Class Current428/364CPC Class CodesD02G 3/445 Yarns or threads for use in...Y10T 428/2913 Rod, strand, filament or fiberY10T 428/2969 Polyamide, polyimide or pol...
