Poly(trimethylene terephthalate) bicomponent fibers

A technology of polytrimethylene terephthalate and polytrimethylene phthalate, which is applied in the field of two-component polytrimethylene terephthalate fiber and its manufacturing, can solve problems such as cloud spots, uneven dyeing, broken filaments, etc. Achieve high dye uptake and soft hand feeling

Inactive Publication Date: 2005-08-31
EI DU PONT DE NEMOURS & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Other problems mentioned included clouding, uneven dyeing, uneven mixing and broken filaments

Method used

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  • Poly(trimethylene terephthalate) bicomponent fibers
  • Poly(trimethylene terephthalate) bicomponent fibers
  • Poly(trimethylene terephthalate) bicomponent fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] Polytrimethylene terephthalate / polystyrene ("PS") salt and pepper blends were prepared as described above and spun as described above. The results are shown in Table I below.

[0108] Table I - Polytrimethylene terephthalate / polystyrene blends

[0109] Slice IV * PS wt % Fiber Tensile Roll 15 Intensity CCa

[0110] West End Eastern District West End Eastern District IV * Compare ℃ dawn (g / d) elongation (％)

[0111] 1.01 0.86 0 0 0.84 2.8 120 104 3.1 22 14.7

[0112] 1.01 0.86 0.8 0 0.82 3.2 120 94 3.1 29 15.6

[0113] 1.01 0.86 1.6 0 0.81 3.8 120 92 3.0 32 8.2

[0114] 1.01 0.86 2.4 0 0.81 4.3 120 99 3.8 30 5.5

[0115] 1.01 0.86 0 0.8 0.82 2.6 120 103 3.0 20 29.9

[0116] * Measured value, dL / g.

[0117] These data show that when polystyrene is fed into the West extruder, stretchability is greatly improved as indicated by high draw ratios. This is due to the lower orientation of the bicomponent west side enabling higher draw ...

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Abstract

A side-by-side or eccentric sheath-core bicomponent fiber wherein each component comprises a different poly(trimethylene terephthalate) composition and wherein at least one of the compositions comprises styrene polymer dispersed throughout the poly(trimethylene terephthalate), and preparation and use thereof.

Description

field of invention [0001] The present invention relates to two-component poly(trimethylene terephthalate) fiber and its manufacturing method. Background of the invention [0002] Polytrimethylene terephthalate (also known as "3GT" or "PTT") has recently received a lot of attention as a polymer for textiles, carpet, packaging and other end uses. Textile and carpet fibers have excellent physical and chemical properties. [0003] It is well known that bicomponent fibers have ideal crimp shrinkage properties, where the two components have different degrees of orientation, as indicated by different intrinsic viscosities. This increases the use value of the fiber. [0004] US Patent Nos. 3,454,460 and 3,671,379 disclose bicomponent polyester textile fibers. But there is no mention of bicomponent fibers, such as sheath-core or side-by-side fibers, in which the two components each contain the same polymer with different physical properties, such as polytrimethylene terephthalate....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14
CPCD01F8/14Y10T428/2924Y10T428/2927Y10T428/2931Y10T428/2929D01D5/34D01F6/62
Inventor 张进昌J·V·库里安R·W·米勒
Owner EI DU PONT DE NEMOURS & CO
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