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Polyketone Fibers, Production and Use Thereof

a technology of polyketone fibers and polyketones, applied in the field of meltspun fibers, can solve the problems of limiting the processability of extrusion process, small proportions of solvents used in the finished fiber, and cannot be avoided

Inactive Publication Date: 2020-03-12
PERLON GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes the use of a special process to control the properties of fibers made from aliphatic polyketones. By adjusting various parameters such as temperature, shear, and spinning delay, the degree of crosslinking of the polymer can be controlled, resulting in improved properties such as heat resistance, chemical resistance, abrasion resistance, bending resistance, and bending recovery. The use of selected polymer additives can further enhance the fiber's stability and mechanical properties. Combining aliphatic polyketones with other polymers can also create fibers with excellent mechanical properties. The polymer's good barrier properties make it suitable for producing fibers with high chemical resistance. The invention also allows for the production of hot melt variants with low melting points that can be used in textile construction or for thermal binding with other materials. The resulting fibers have low friction coefficients and good abrasion resistance.

Problems solved by technology

However, it cannot be avoided that small proportions of the solvent used are left in the finished fiber.
This can lead to accelerated degradation or crosslinking reactions of the polymer, which in turn can have a detrimental effect on the properties of the produced fiber or which can lead to crosslinking reactions of the polymer, which can limit their processability in the extrusion process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0194]Combination of two commercially available aliphatic polyketones, a higher melting one in the core—type M630A from Hyosung Polyketone—and a low-melting one in the sheath type M410F from Hyosung Polyketone.

[0195]To produce such a bicomponent monofilament, both components were co-extruded in one production step. The relative feed rate allows the core / sheath ratio to be adjusted, which here was 70 / 30. In the process, the monofilament was stretched several times under temperature exposure. The total stretching ratio was 1:3.7.

[0196]By using the above process bicomponent monofilaments with the following characteristics were obtained:

UnitvaluediameterMm0.5fiber denierDtex2425tensile strengthcN / tex42.5elongation at break%25.6thermoshrinkage (at%15180° C. for 10 min)

[0197]Combination of the two polyketone variants in one monofilament allows a thermally induced physical combination at the monofilament crossing points. As a result, fabric structures, for example, have an increased shear ...

example 2

[0198]A stabilized polyethylene terephthalate (PET) 99.3% raw material type 12 from Invista with 0.7% Stabaxol from Lanxess was used in the core and an aliphatic polyketone—type M630A from Hyosung Polyketone was used in the sheath.

[0199]Such a monofilament was co-extruded in one production step. The relative feed rate allows the core / sheath ratio to be adjusted, which here was 70 / 30. In the process, the monofilament was stretched several times under temperature exposure. The total stretching ratio was 1:4.3.

[0200]By using the above process bicomponent monofilaments with the following characteristics were obtained:

unitvaluediametermm0.5fiber denierdtex2568tensile strengthcN / tex38.5elongation at break%33.8thermoshrinkage (at%4.1180° C. for 10 min)

[0201]The combination of PET and aliphatic polyketone in one monofilament combines the properties common to PET with the surface properties of polyketones. As a result, fabric structures can be produced that have a significantly reduced frict...

example 3

[0202]An aliphatic polyketone type M630A from Hyosung Polyketone—was used as a matrix polymer. In addition, 1.0% by weight of polysiloxane beads type PMSQ E+580 from Coating Products with an average diameter of 8 μm were dispersed in the matrix polymer.

[0203]The obtained monofilament shows the following characteristics:

unitvaluediametermm0.6fiber denierdtex3702tensile strengthcN / tex40.4elongation at break%25.4thermoshrinkage (at%14.7180° C. for 10 min)

[0204]As shown in EP 2 933 961 A1, the addition of polysiloxane beads reduces the friction coefficient against metal or ceramic through the resulting surface structure of the monofilament. This is also the case in the combination with aliphatic polyketone (see table below). The monofilaments of the comparative experiments V1 to V5 referred to in the table are described below.

Example no.3V1V2V3V4V5monofilament0.1320.1880.2110.1980.2200.384against metall,drymonofilament0.1630.2340.2240.2060.2410.307againstceramic, wet

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Abstract

Disclosed are melt-spun fibers comprising thermoplastic aliphatic polyketone as a first polymer and a selected polymeric component as a second polymer.These fibers are distinguished by excellent mechanical properties, such as good bending recovery, by very good sliding properties, by high hydrolysis resistance and by high abrasion resistance.

Description

CLAIM FOR PRIORITY[0001]This application is a national phase application of PCT / EP2018 / 000265 FILED May 18, 2018, which was based on application DE 20 2017 002 839.5 FILED May 30, 2017. The priorities of PCT / EP2018 / 000265 and DE 20 2017 002 839.5 are hereby claimed and their disclosures incorporated herein by reference.TECHNICAL FIELD[0002]The present invention concerns melt-spun fibers from selected polyketone-containing compositions, their manufacture and various applications of these fibres.BACKGROUND[0003]For technical applications, synthetic threads made of melt-spinnable polymers are preferred. For cost reasons, long-known standard polymers are used, for example, polyolefins, such as polyethylene (PE), polypropylene (PP), or polyamides, such as polyamide 6 (PA 6), polyamide 6.6 (PA 6.6) or polyesters, such as polyethylene terephthalate (PET), provided that threads from these polymers can meet the desired requirements.[0004]In technical applications, a low sliding friction of t...

Claims

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Application Information

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IPC IPC(8): D01F6/96D01F6/88D01D5/08
CPCD01F6/88D01D5/082D01F6/96A46D1/00A46D1/0207D01F6/30D01F8/04D01F6/16D01F6/44D01F8/06D01F8/12D01F8/14
Inventor FISCHER, ANDREAS HILMARHECKENBENNER, PASCALNEUGIRG, BENEDIKT
Owner PERLON GMBH
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