KR20200038427A - Polyketone fiber, its manufacture and use - Google Patents

Abstract

The present invention relates to a melt spun fiber containing a thermoplastic aliphatic polyketone as a first polymer and a polymer component selected as a second polymer. The fibers are characterized by excellent mechanical properties such as, for example, good bending recovery, very good sliding properties, high hydrolysis resistance and high wear resistance.

Description

Polyketone fiber, its manufacture and use

The present invention relates to melt-spun fibers from selected polyketone-containing compositions, their preparation and various uses of these fibers.

For technical applications, synthetic threads made of melt-spun polymers are preferred. For cost reasons, for example, polyolefins, such as polyethylene (PE), polypropylene (PP), or polyamides, such as polyamide 6 (PA 6), polyamide 6.6 (PA 6.6) or polyester, Standard polymers known for a long time, for example polyethylene terephthalate (PET), are used as long as the threads from these polymers can meet the desired requirements.

In technical applications, low sliding friction of textile fabrics is often required. Specific coloring, stability against degradation due to thermal stress or radiation exposure, special mechanical properties, such as increased impact resistance, lower elongation at break, abrasion resistance, dimensional stability, bending strength, or Additional properties, such as increased bending recovery, are also often required.

Fibers made from aliphatic polyketones and from combinations of aliphatic polyketones with other selected polymers are well known.

EP 0 310 171 A2 discloses melt spun fibers from these materials, for example ethylene / propylene / CO-terpolymer. These fibers have high tensile strength and E-modulus and are proposed to be used as tire cords or for the production of spunbonded fabrics. The latter is suitable for the production of roof liners or as geotextiles.

DE 197 57 607 A1 discloses polyamide / polyketone blends that can be processed into threads or fibers. Multicomponent fibers are not disclosed.

DE 198 53 707 A1 discloses stabilized aliphatic polyketones which can be present in particular as fibers.

From WO 94/20562 A1 and WO 99/41437 A1, aliphatic polyketones are known which can be used in particular as fibers and which can be stabilized by antioxidants.

CN 106 521 704 A discloses mixtures of aliphatic polyketones and polyoxymethylenes, which can be present in particular as fibers and stabilized by antioxidants. Multicomponent fibers are not disclosed.

WO 2016/190594 A2 and WO 2016/190596 A2 disclose wet-spun fibers from ethylene / propylene / CO-terpolymers that have excellent strength and strain values and are also characterized by high water resistance, heat resistance and good thermal conductivity. . Various fields of use as applications for these fibers are, for example, the manufacture of ropes, hoses, nets, spun-bonded fabrics, airbags or protective clothing, as well as geotextiles, reinforced fibers of composite materials As, use as a belt, safety net, conveyor belt, fishing line or tennis line has been proposed.

In wet spinning, the dissolved polymer is spun into a thread through a spinning capillary. The solvent is recovered as completely as possible and returned to the manufacturing process. However, the solvent used cannot be prevented from remaining in a small amount in the finished fiber. It is desirable to provide solvent-free fibers. This avoids potential safety risks due to solvent residues present in the fibers. In addition, melt spinning can lead to higher levels of crystallization, which can advantageously affect the mechanical properties of the fibers.

On the other hand, processing by melt spinning often has to be performed at significantly higher temperatures than wet spinning. This can accelerate the deterioration or crosslinking reaction of the polymer, which in turn can have a detrimental effect on the properties of the resulting fibers or can lead to a crosslinking reaction of the polymer and limit its processing ability in the extrusion process.

Surprisingly, by the combination of adjusted process parameters (temperature, shear, throughput, spinning retardation, stretching degree, fixation, residence time), the degree of crosslinking of the polymer can be controlled, thereby making the fiber heat resistant, Clearly improved thermo-mechanical properties of fibers such as hydrolysis resistance, chemical resistance, abrasion resistance, bending resistance, bending recovery, modulus, creep behavior and tendency to cranking It turned out to be possible.

Dimensional stability accounts for the tendency to show a change in fiber length at a certain temperature under tension. This results from a combination of tensile modulus and creep properties of fibers such as monofilament.

It has been found that the dimensional stability of fibers based on aliphatic polyketones can be achieved by appropriate additivation. Selected polymeric additives, dispersed in a matrix of aliphatic polyketones, can be used. For example, fibril can be formed from a dispersed phase and / or the fiber surface is modified by the dispersed phase.

In the combination of aliphatic polyketones and other selected polymers, the individual polymer components complement each other in a synergistic manner. For example, the fibers are imparted with excellent mechanical properties (high module, low creep, low cranking tendency) by other polymers and low sliding friction and increased wear resistance by aliphatic polyketones.

In addition, textiles, such as textiles or bundles, comprising multi-component yarns comprising yarns made of aliphatic polyketones or having aliphatic polymers as sheaths and other polymers as cores. It has been found that the fabric exhibits very little sliding friction and very high abrasion resistance in dry conditions as well as in wet conditions.

It has also been found that fibers produced from selected conventional polymers can be combined with aliphatic polyketones to form fibers characterized by low sliding friction and high bending resistance.

Multicomponent fibers with selected properties can be obtained, such as fibers having a sheath-core structure, wherein the sheath is made of an aliphatic polyketone and the core is made of polyester, for example polyethylene terephthalate or polycarbonate. It is produced with an aliphatic polyketone having a melting point higher than that of the sheath. By changing the melting point of the sheath polymer, for example, the adhesion properties can be accurately set.

As a result of the inherent chemical resistance and good barrier properties of the aliphatic polyketone, sheath-core fibers with high chemical resistance can be produced.

Thus, a hot melt variant with a low melting point and possible thermal bonding with a substrate or other monofilament in a textile construct can be produced, for example, in a fabric or knitted fabric. In addition, fibers having a low coefficient of friction and excellent wear resistance are produced.

One object of the present invention is to provide a fiber having the above-described property profile.

Another object of the present invention is to provide a spinning process for the production of such fibers.

In a first aspect, the present invention provides a thermoplastic aliphatic polyketone as a first polymer and polyolefin, polyester, polyurethane, polyphenylene sulfide, polyphenylene sulfone, polyphenylene ether, polyphenylene ketone, poly as the second polymer. A melt spun fiber containing phenylene ether ketone, liquid crystal polymer and / or aliphatic polyketone, wherein when the aliphatic polyketone is present as a second polymer, its melting point is at least 5 ° C., more preferably than the melting point of the aliphatic polyketone of the first polymer. Preferably at least 10 ° C., particularly preferably at least 20 ° C. higher.

In a second aspect, the present invention provides a thermoplastic aliphatic polyketone as the first polymer and polyolefin, polyester, polyamide, polyoxymethylene, polyurethane, polyphenylene sulfide, polyphenylene sulfone, polyphenylene ether as the second polymer. , A melt spinning fiber containing polyphenylene ketone, polyphenylene ether ketone, liquid crystal polymer and / or aliphatic polyketone, wherein the polymers are in the form of two or more fiber components that are spatially separated from each other but correlated with each other. , If the aliphatic polyketone is present as a second polymer, its melting point is at least 5 ° C, preferably at least 10 ° C, particularly preferably at least 20 ° C higher than the melting point of the aliphatic polyketone of the first polymer. It is about.

In a third aspect, the present invention relates to a melt spun fiber, wherein the matrix polymer contains a thermoplastic aliphatic polyketone, and particles of polysiloxane or poly (meth) acrylate are dispersed therein.

The aliphatic polyketone used according to the present invention is a homopolymer or copolymer having a recurring structural unit of the formula -R ₁ -CO-, wherein R ₁ is a divalent aliphatic residue, preferably 2 to 2 carbon atoms. 6 represents a divalent aliphatic residue.

Preferred residues R ₁ are of the formula -C _n H _2n- , where n is 2, 3 or 4, especially 2 or 3.

Preference is given to copolymers with different residues R ₁ in the polymer chain, for example copolymers with residues -C ₂ H ₄ -and with residues -C ₃ H _7- .

Thermoplastic ethylene / propylene / CO-terpolymers are particularly preferred as aliphatic polyketones.

Aliphatic polyketones are semi-crystalline polymers with melting points measured by differential thermoanalysis (DSC). For purposes of the present description, DSC analysis is performed according to ASTM D3418. The heating rate is 10K / min.

In addition, particularly preferred aliphatic polyketones are those having a melting point of 199 to 220 ° C. and MFI values of 6 to 60 g / 10 min (according to ASTM-D 1238) at 240 ° C. and 2.16 daN.

Aliphatic polyketones used in accordance with the present invention are known polymers already used in fiber production.

In a preferred embodiment, the melt spun fiber according to the invention contains an antioxidant.

Steric hindered phenols and / or HALS (hindered amine light stabilizers) and / or phosphites can be used as antioxidants and can be combined with co-stabilizers.

Preferred antioxidants based on sterically hindered phenols include hindered alkylated monophenols such as 2.6-di-tert-butyl-4-methylphenol or 2.6-di-tert.-butyl-4- Methoxyphenol; Sterically hindered alkylthiomethylphenols such as 2.4-di-octylthiomethyl-6-tert.-butylphenol, sterically hindered hydroxylated thiodiphenylethers such as 2,2'-thio-bis (6 -tert-butyl-4-methylphenol), 4,4'-thio-bis- (6-tert-butyl-3-methyl-phenol), 4,4'-thio-bis- (6-tert-butyl- 2-methylphenol), 4,4'-thio-bis- (3,6-di-sec.-amylphenol), 4,4'-bis- (2,6-di-methyl-4-hydroxyphenyl ) -Disulfide; Sterically hindered alkylidene-bisphenols, for example 2,2'-methylene-bis- (6-tert-butyl-4-methylphenol); Steric hindered benzylphenols, for example 3,5,3 ', 5'-tetra-tert-butyl-4,4'-dihydroxydibenzyl ether; Steric hindered hydroxybenzylated malonates such as dioctadecyl-2,2-bis- (3,5-di-tert-butyl-2-hydroxy-benzyl) -malonate; Steric hindered hydroxybenzyl-aromatic compounds such as 1,3,5-tris- (3,5-di-tert-butyl) -4-hydroxy-benzyl) -2,4,6-trimethylbenzene, 1 , 4-bis- (3,5-di-tert-butyl-4-hydroxy-benzyl) -2,3,5,6-tetramethylbenzene, 2,4,6-tris- (3,5-di -tert-butyl-4-hydroxy-benzyl) -phenol; Steric hindrance phenolic triazine compounds such as 2,4-bis-octylmercapto-6 (3,5-di-tert-butyl-4-hydroxyanilino) -1,3,5-triazine; Steric hindered phenolic benzylphosphonates such as dimethyl-2,5-di-tert-butyl-4-hydroxybenzylphosphonate; N- (3,5-di-tert-butyl-4-hydroxyphenyl) -carbamic acid alkyl ester; Esters of β- (3.5-di-tert-butyl-4-hydroxyphenyl) -propionic acid with monohydric or polyhydric alcohols; Esters of β- (5-tert-butyl-4-hydroxy-3-methylphenyl) -propionic acid with monohydric or polyhydric alcohols; Esters of β- (3,5-dicyclohexyl-4-hydroxyphenyl) -propionic acid with monohydric or polyhydric alcohols; Esters of 3,5-di-tert-butyl-4-hydroxyphenyl acetic acid with monohydric or polyhydric alcohols; amide of β- (3,5-di-tert-butyl-4-hydroxyphenyl) -propionic acid, for example N, N'-bis- (3,5-di-tert-butyl-4-hydroxy- Phenylpropionyl) -hexamethylenediamine, N, N'-bis- (3,5-di-tert-butyl-4-hydroxy-phenylpropionyl) -trimethylene diamine or N, N'-bis- (3 , 5-di-tert-butyl-4-hydroxyphenylpropionyl) -hydrazine.

Preferred co-stabilizers include organic phosphites and / or organic phosphonites. These are co-stabilizers well known for antioxidants.

The amount of antioxidant is usually 0.05 to 10% by weight relative to the total mass of the fiber. Antioxidants are preferably provided in an amount of 0.1 to 5% by weight, in particular 0.5 to 3% by weight.

In addition to the thermoplastic aliphatic polyketone, the fiber according to the first aspect of the present invention comprises at least one polyolefin, polyester, polyurethane, polyphenylene sulfide, polyphenylene sulfone, polyphenylene ether, polyphenylene ketone, polyphenylene Ether ketone, liquid crystal polymer and / or another aliphatic polyketone is contained as the second polymer. In a second aspect of the invention, polyamide and / or polyoxymethylene can be used as the second polymer.

The proportion of aliphatic polyketone as the first polymer in the fibers of the present invention is usually 5 to 90% by weight relative to the total mass of the fibers. The preferred proportion of aliphatic polyketone as the first polymer is in the range of 10 to 80% by weight, in particular 20 to 50% by weight.

Polyolefins, polyesters, polyurethanes, polyphenylene sulfides, polyphenylene sulfones, polyphenylene ethers, polyphenylene ketones, polyphenylene ether ketones, liquid crystal polymers, additional aliphatics as the second polymer in the fibers according to the invention The proportion of polyketone, polyamide and / or polyoxymethylene is usually 10 to 95% by weight relative to the total mass of the fibers. Polyolefins, polyesters, polyurethanes, polyphenylene sulfides, polyphenylene sulfones, polyphenylene ethers, polyphenylene ketones, polyphenylene ether ketones, liquid crystal polymers, additional aliphatic polyketones, polyamides as second polymers and / Or the fraction of polyoxymethylene is preferably 20 to 90% by weight, especially 50 to 80% by weight.

Polyolefin, polyester, polyurethane, polyphenylene sulfide, polyphenylene sulfone, polyphenylene ether, polyphenylene ketone, polyphenylene ether ketone, liquid crystal polymer, other aliphatic polyketone, polyamide used according to the present invention And / or polyoxymethylene is a known polymer already used in fiber production.

Examples of polyolefins are homopolymers or copolymers derived from ethylene and / or propylene, optionally in combination with other ethylenically unsaturated aliphatic hydrocarbons, for example α-olefins having 4 to 8 carbon atoms. Polyethylene and polypropylene can exist in different densities and crystallinities. In general, all of these modifications are suitable for use in the present invention.

Examples of polyesters are from aliphatic, cycloaliphatic and / or aromatic dicarboxylic acids or from polyester-forming derivatives thereof, for example from alkylesters, and from aliphatic, cycloaliphatic and / or aromatic dihydric alcohols, for example ethylene glycol , Thermoplastic polymers derived from propylene glycol and / or butylene glycol.

Other examples of polyesters include thermoplastic elastomeric polyesters (TPE-PE), for example polyesters containing repeating ethylene terephthalate structural units and repeating polyethylene glycol terephthalate structural units. TPE-PE is known to those skilled in the art.

Another example of polyester is polycarbonate. This is preferably used. Officially polycarbonate is a polyester of carbonic acid containing repeating structural units-[R-O-CO-O]-, where R is the residue of a divalent organic alcohol or phenol after removing two alcohol groups. Preferably, R is a residue of bisphenol, which is an aromatic dihydroxy compound. Preferred residues R are 2.2-bis (4-hydroxyphenyl) -propane (bisphenol A), bis- (4-hydroxyphenyl) -methane (bisphenol F), bis- (4-hydroxyphenyl) -sulfone (bisphenol S), dihydroxydiphenyl sulfide, tetramethyl-bisphenol A or 1.1-bis- (4-hydroxyphenyl) -3.5 trimethylcyclohexane (BPTMC).

By using a mixture of the above components, the properties of the resulting polycarbonates can be changed. Cocondensates from bisphenol A and BPTMC produce very transparent and heat resistant resins. It is possible to incorporate larger functional alcohols / phenols, for example from 1.1.1-tris- (4-hydroxyphenyl) -ethane (THPE). This makes it possible to create chain branches that have a positive effect on the structural viscosity in material processing.

Aromatic-aliphatic polyester homopolymers or copolymers are also preferred. Examples thereof include polyethylene terephthalate homopolymers or copolymers containing ethylene terephthalate units. Thus, these preferred polymers are derived from ethylene glycol and optionally other alcohols, from terephthalic acid or polyester-forming derivatives thereof, such as terephthalic acid esters or chlorides.

In addition to or instead of ethylene glycol, these polyesters may contain structural units derived from other suitable divalent alcohols. Typical examples thereof are aliphatic and / or alicyclic diols such as propanediol, 1.4-butanediol, cyclohexane dimethanol or mixtures thereof.

In addition to or instead of terephthalic acid or its polyester-forming derivatives, these polyesters may contain structural units derived from other suitable dicarboxylic acids or from their polyester-forming derivatives. Typical examples thereof are aromatic and / or aliphatic and / or alicyclic dicarboxylic acids such as naphthalene dicarboxylic acid, isophthalic acid, cyclohexane dicarboxylic acid, adipic acid, sebacic acid or mixtures thereof.

Thus, fibers containing other polyesters such as polybutylene terephthalate, polypropylene terephthalate, ethylene naphthalate unit-containing polyethylene naphthalate homopolymers or copolymers may be prepared.

These thermoplastic polyesters are known. The building blocks of the thermoplastic copolyester are preferably the diols and dicarboxylic acids described above, or correspondingly structured polyester-forming derivatives.

Polyester has a solution viscosity (IV value) (measured at 25 ° C. in dichloroacetic acid (DCE)) of at least 0.60 dl / g, preferably 0.80 to 1.05 dl / g, particularly preferably 0.80 to 0.95 dl / g It is preferred.

The polyesters used according to the invention can also be derived from hydroxycarboxylic acids.

Examples of polyamides that can be used in the second aspect of the invention are from aliphatic, alicyclic and / or aromatic dicarboxylic acids or polyamide-forming derivatives thereof, for example from salts thereof, and aliphatic, alicyclic and / or aromatic It is a thermoplastic polymer derived from a divalent amine, such as hexamethylenediamine.

Other examples of polyamides include thermoplastic-elastomeric polyamides (TPE-PA), for example polyamides containing repeating hexamethylene terephthalamide structural units and repeating polyethylene glycol terephthalamide structural units. TPE-PA is known to those skilled in the art.

Polyamides which are preferably used are partially crystalline aliphatic polyamides prepared from aliphatic diamines and aliphatic dicarboxylic acids and / or from cycloaliphatic lactams with at least five-membered rings or corresponding amino acids.

As the reactants, aliphatic dicarboxylic acids, preferably adipic acid, 2.2.4- and 2.4.4-trimethyladipic acid, azelaic acid and / or sebacic acid, aliphatic diamines, preferably tetramethylene diamine, hexamethylene diamine, 1.9-nonane diamine, 2.2.4- and 2.4.4-trimethylhexamethylene diamine, isomeric diaminodicyclohexylmethane, diaminodicyclohexylpropane, bis-aminomethylcyclohexane, aminocarboxylic acid, preferably aminocapro Acids or corresponding lactams are contemplated. Copolyamides from some of the monomers mentioned are included. Caprolactam is particularly preferred and ε-caprolactam is particularly preferred.

Preferably, the aliphatic homo or copolyamide used in the present invention is polyamide 12, polyamide 4, polyamide 4.6, polyamide 6, polyamide 6.6, polyamide 6.9, polyamide 6.10, polyamide 6.12, polyamide 6.66, polyamide 7.7, polyamide 8.8, polyamide 9.9, polyamide 10.9, polyamide 10.10, polyamide 11 or polyamide 12.

Polyesters and polyamides used according to the invention may also be derived from hydroxycarboxylic acids or from aminocarboxylic acids.

Examples of polyoxymethylene that can be used in the second aspect of the present invention include homopolymers or copolymers containing repeating structural units of the formula -CH ₂ -O-.

Examples of polyurethanes are homopolymers or copolymers derived from aromatic or (cyclo) aliphatic diisocyanates and from (cyclo) aliphatic or aromatic diols. The polyurethane contains repeating structural units of the formula -C ₆ H ₄ -NH-CO-OC ₂ H ₄ -O-CO-NH-, for example.

Other examples of polyurethanes include thermoplastic-elastomeric polyurethanes (TPE-PU). TPE-PU is known to those skilled in the art.

Examples of polyphenylene sulfides include poly-p-phenylene sulfides, for example homopolymers or copolymers containing repeating structural units of para -C ₆ H ₄ -S-.

Examples of polyphenylene sulfones are poly-p-phenylene sulfones, for example homopolymers or copolymers containing repeating structural units of para -C ₆ H ₄ -SO _x- , where x is a number from 1 to 2 Means).

Examples of polyphenylene ethers include poly-p-phenylene ethers, for example homopolymers or copolymers containing repeating structural units of para-C ₆ H ₄ -O-.

Examples of polyphenylene ketones include poly-p-phenylene ketones, for example homopolymers or copolymers containing repeating structural units of para-C ₆ H ₄ -CO-.

Examples of polyphenylene ether ketones contain poly-p-phenylene ether ketones, for example repeating structural units of para -C ₆ H ₄ -CO and repeating structural units of -para -C ₆ H ₄ -O- Copolymers.

Examples of liquid crystal polymers include liquid polymer aromatic polyesters, for example homopolymers or copolymers containing repeating structural units derived from para-hydroxybenzoic acid.

In the fibers according to the present invention, the first polymer and the second polymer may be present as a polymer mixture, or these polymers may be present in the form of two or more fiber components that are spatially separated from each other but correlated with each other.

Fibers are provided in which the first polymer and the second polymer are present as a polymer mixture, one of the polymers, preferably an aliphatic polyketone, forming a matrix and the other polymer being dispersed in a fibril form within the matrix.

An example of such an embodiment is fibers in the form of island-in-the-sea fibers in which the fibril-like polymer component is arranged in a polymeric matrix component. The fibrils are preferably aligned in the longitudinal direction of the fibers to increase the tensile strength and modulus of the fibers.

For example, by adding 1 to 7% of liquid crystal polyester, the tensile modulus of the monofilament made of an aliphatic polyketone can be significantly increased (see Example 4).

Multicomponent fibers in which the polymers are spatially separated from each other but are in the form of two or more fiber components that are interrelated with each other can be cited as examples of the fibers.

Accordingly, at least two polymers of the fibers according to the present invention may be present as a polymer mixture, or these at least two polymers may be present in the form of two or more fiber components that are spatially separated from each other but correlated with each other. Examples of such latter embodiments are, for example, multicomponent fibers that may exist as core-sheath fibers or as side-by-side fibers.

Fibers containing a mixture of aliphatic polyketones and polycarbonates are preferred.

Preference is given to fibers in which one of the polymer components, preferably a polymer different from the aliphatic polyketone, is present in fibril form in the polymer matrix component.

Aliphatic polyketones form a polymer matrix, and another polymer selected from the group consisting of polyolefins, polyesters, polyphenylene ketones, polyphenylene ether ketones, and / or liquid crystal polymers is fibers in fibril form in the polymer matrix component. Especially preferred. Particularly preferred these fibers contain a liquid crystal polymer as another polymer.

It has a sheath of aliphatic polyketone and has polyolefin, polyester, polyurethane, polyphenylene sulfide, polyphenylene sulfone, polyphenylene ether, polyphenylene ketone, polyphenylene ether ketone, liquid crystal polymer, additional aliphatic polyketone , Having a core made of polyamide and / or polyoxymethylene, and where an aliphatic polyketone is present in the core, its melting point is at least 5 ° C, preferably at least 10 ° C, particularly at least 20, than the melting point of the aliphatic polyketone in the sheath. Higher ℃, core-sheath fibers are also preferred.

Particular preference is given to core-sheath fibers having a sheath made of an aliphatic polyketone and a core made of polyester, polyphenylene sulfide, polyphenylene ether, polyphenylene ketone or polyphenylene ether ketone.

Part of the fiber produced from aliphatic polyketones and in contact with the fiber part, polyolefin, polyester, polyphenylene sulfide, polyphenylene sulfone, polyphenylene ether, polyphenylene ketone, polyphenylene ether ketone, liquid crystal polymer, addition Side-by-side fibers having another fiber portion made of an aliphatic polyketone, polyamide and / or polyoxymethylene of are also preferred, where the aliphatic polyketone is present in the additional fiber portion, its melting point Is at least 5 ° C., preferably at least 10 ° C., particularly at least 20 ° C. higher than the melting point of the aliphatic polyketone in the remaining fiber portion.

Side-by having a fiber part produced with an aliphatic polyketone and another fiber part contacting the fiber part and made with polyester, polyphenylene sulfide, polyphenylene ether, polyphenylene ketone or polyphenylene ether ketone -Side fibers are also particularly preferred.

A portion of the fiber produced from an aliphatic polyketone and in contact with the portion of the fiber, polyolefin, polyester, polyphenylene sulfide, polyphenylene sulfone, polyphenylene ether, polyphenylene ketone, polyphenylene ether ketone and / or liquid crystal polymer Preference is also given to side-by-side fibers having another fiber portion produced with.

The sheath contains an aliphatic polyketone as a polymer, the core contains one or more of the above-mentioned second polymers, and the core and / or sheath contains at least one additive that imparts specific functionality to the fiber. Core-sheath fibers are particularly preferred.

Side-by-side fibers in which one fiber part contains an aliphatic polyketone as a polymer and the other fiber part contains at least one of the second polymers described above and at least one additive imparting specific functionality to the fiber Especially preferred.

Core-sheath fibers comprising a sheath composed of aliphatic polyketones and additional aliphatic polyketones having a core having a melting point at least 5 ° C., preferably at least 10 ° C., particularly at least 20 ° C., higher than the melting point of the aliphatic polyketone in the sheath Especially preferred.

For example, by using a core-sheath structure having a core made of polyester, for example PET or polycarbonate, or an aliphatic polyketone having a higher melting point than sheath polymer, fibers having excellent thermal stability can be produced. have. Compared to the fibers produced with aliphatic polyketones, for example in the case of core-sheath fibers with PET in the sheath, they are characterized by high tensile and bending modulus and thus high stability. These fibers exhibit excellent dimensional stability at temperatures below 150 ° C under tension.

In a third aspect of the present invention, a fiber is provided in which the fiber surface can be modified by selected polymer particles dispersed in a matrix polymer. Functionalization and texturing of the surface can be achieved by adding polysiloxane particles such as PMSQ particles and / or poly (meth) acrylate particles such as crosslinked PMMA microballs. . The typical diameter of these particles is in the range of 0.2 to 100 μm. In this way, microtexturing of the surface can be created and the surface properties of the fibers can be modified. Above all, it reduces the friction area and greatly improves the friction properties. In addition, the cleaning properties of the fibers are improved.

In this aspect, the present invention relates to fibers, in particular monofilaments, containing a matrix of aliphatic polyketones, in which polysiloxane particles and / or poly (meth) acrylate particles with a diameter of 200 nm to 100 μm are dispersed.

The particles can be of any shape. An example of this is a rotationally symmetrical shape, in particular a particle that may be spherical but irregular in shape. These particles exist as micropowders. The diameter of these particles is in the range of 0.2 to 100 μm, preferably 1 to 50 μm. For particles of varying diameters, diameter refers to the largest diameter of the particle.

Monofilaments containing spherical particles from polysiloxanes having a diameter of 1 to 50 μm are preferred.

The particles are dispersed as a fine powder in the matrix polymer. In general, 0.001% to 8% by weight, preferably 0.02% to 5% by weight of particles are administered to the matrix polymer. The particles are present in the matrix polymer as a heterogeneous phase. The particles can exist as individual particles in the matrix polymer and / or as aggregates of different individual particles.

The polysiloxane used according to the invention is a group of synthetic polymers in which silicon atoms are connected via oxygen atoms. The polysiloxane used according to the invention is also called silicone. It can be a linear or crosslinked polysiloxane or a polysiloxane having a cage structure, so-called silsesquioxane.

Preferably, the repeating structural element -SiR ¹ R ² -O- or silsesquioxane of the formula R ¹ SiO _3/2 , wherein R ¹ is C ₁ -C ₆ -alkyl, especially methyl, R ² is C Linear or crosslinked polysiloxanes containing ₁ -C ₆ -alkyl or phenyl, especially methyl or phenyl) are used.

Particular preference is given to polysiloxane-containing monofilaments which are linear or crosslinked polydimethylsiloxane or polymethylsilsesquioxane.

The poly (meth) acrylate used according to the invention is a group of synthetic polymers derived from esters of acrylic acid and / or esters of methacrylic acid. Also, the poly (meth) acrylate may have other monomer units copolymerized with esters of acrylic acid and / or esters of methacrylic acid. The poly (meth) acrylate used according to the invention may be linear or preferably crosslinked poly (meth) acrylate.

Preferably, a homopolymer or copolymer of methyl acrylate or methyl methacrylate is used as poly (meth) acrylate.

Examples of the aforementioned additives are electroconductive additives, lubricants, anti-sticking agents, propellants, pigments and / or fillers for the production of foamed or porous fiber surfaces.

Preferred multicomponent fibers are in contact with the part produced with aliphatic polyketones and with one of the above polymer types, in particular polyester, particularly preferably TPE-PE, or especially polyurethane, particularly preferably TPE-PU. It contains another produced part, wherein the aliphatic polyketone mainly improves anti-friction properties and the second polymer component mainly improves other properties, for example grips mediated by TPE-PE or TPE-PU ( It improves grip properties or hot glue properties mediated by co-polyester.

Aliphatic polyketones, and / or polyolefins, polyesters, polyurethanes, polyphenylene sulfides, polyphenylene sulfones, polyphenylene ethers, polyphenylene ketones, polyphenylene ether ketones, liquid crystal polymers, used according to the invention , Additional polymers selected from the group consisting of additional aliphatic polyketones, polyamides and / or polyoxymethylenes can contain additional additives that impart desired properties to the fibers produced. Examples of such additives are UV stabilizers, pigments, dyes, fillers, matting agents, reinforcements, crosslinking agents, crystallization accelerators, lubricants, flame retardants, antistatic agents, hydrolysis stabilizers, plasticizers, impacts Strength modifiers, and / or other polymers (which are aliphatic polyketones, polyolefins, polyesters, polyphenylene sulfides, polyphenylene sulfones, polyphenylene ethers, polyphenylene ketones, polyphenylene ether ketones, liquid crystal polymers, other aliphatics Polyketone, polyamide and / or polyoxymethylene). These additives are known to those skilled in the art.

Examples of preferred UV stabilizers include UV-absorbing compounds, such as benzophenone or benzotriazole, or HALS-type compounds (“hindered amine light stabilizers”).

Examples of preferred pigments include carbon black, titanium dioxide or iron oxide.

Examples of preferred dyes include anionic dyes, acid dyes, metal complex dyes, cationic or basic dyes and disperse dyes.

Examples of preferred fillers are carbonates such as chalk or dolomite, silicates such as talc, mica, kaolin or sulfates such as barite, or oxides and hydroxides such as quartz powder, crystalline silica, ammonium hydroxide or hydroxide Magnesium, or magnesium oxide, zinc oxide, or calcium oxide.

An example of a preferred matting agent is titanium dioxide.

An example of a preferred reinforcing material is glass fiber.

Examples of preferred crosslinking agents include polyvalent carboxylic acids and esters thereof, polyhydric alcohols, polycarbonates or polycarbodiimides.

Examples of preferred crystallization accelerators include carboxylic esters.

Examples of preferred lubricants include polyolefin waxes, fatty acids or salts thereof, fatty acid alcohols, fatty acid esters, silicones, polymethacrylate beads, polysiloxanes, and in particular the PMSQ disclosed in EP 2,933,361 A1.

Examples of preferred flame retardants include phosphorus-containing compounds, organic halogen compounds, nitrogen-containing organic compounds, or combinations thereof.

Examples of preferred antistatic agents include carbon black, graphite, graphene or carbon nanotubes.

Examples of preferred hydrolysis stabilizers include carbodiimide or epoxidized compounds.

Examples of preferred processing aids include waxes or long chain carboxylic acids or salts thereof, aliphatic, aromatic esters or ethers.

Examples of preferred plasticizers include diethylhexyl phthalate, alkyl sulfonic acid esters of phenol, triethyl citrate, diethylhexyl adipate or diethyloctyl adipate.

Examples of preferred impact strength modifiers are thermoplastic elastomers, such as thermoplastic copolyamides, thermoplastic polyester elastomers, thermoplastic copolyesters, olefinic thermoplastic elastomers, styrol-copolymers such as SBS, SEBS , SEPS, SEEPS, MBS, ABS, SAN or SBK, thermoplastic urethane based elastomers, thermoplastic vulcanizates or crosslinked olefin based thermoplastic elastomers, especially PP / EPDM, or polycarbonate.

Examples of other preferred polymers include fluoropolymers, such as polytetrafluoroethylene, tetrafluoroethylene-hexafluoropropylene copolymer or polychlorine-trifluoroethylene.

The proportion of these additional additives in the fibers according to the invention can usually be up to 10% by weight relative to the total mass of the fibers. Preferably, these additional additives are used in an amount of 1 to 5% by weight.

In a preferred embodiment, the present invention is a sheath and polyolefin composed of a thermoplastic ethylene / propylene- / CO-terpolymer, polyester, polyurethane, polyphenylene sulfide, polyphenylene sulfone, polyphenylene ether, polyphenylene ketone, poly A melt spun core-sheath fiber containing a core composed of phenylene ether ketone, liquid crystal polymer, additional aliphatic polyketone, polyamide and / or polyoxymethylene, wherein the sheath has a mass of 5 to 50% by weight and the mass of the core is 95 to 5% by weight of the core and / or sheath, optionally up to 10% by weight of additives, especially hindered phenols, UV stabilizers, pigments, dyes, fillers, matting agents, crosslinking agents, crystallization accelerators, lubricants, flame retardants, antistatic agents , Hydrolysis stabilizers, plasticizers, impact strength modifiers and / or fluoropolymers, these percentages being for the total mass of the fiber, melting It relates to a fiber sheath - four cores.

The term "fiber" should be understood as a thin linear structure in relation to its length in the context of the present description. Typically, the ratio of fiber length to diameter is at least 5: 1. Within the meaning of this description, the fibers can be endless (called filaments) and cut into finite lengths (called bristle or staple fibers). In addition, the fibers may be in the form of several filaments or several staple fibers. The invention preferably relates to fibers in the form of monofilament, bristle or staple fibers.

The cross-sectional shape of the fiber according to the invention can be arbitrary. It can have irregular cross-sections, point- or axis-symmetric cross-sections, such as circular, elliptical or n-angle cross sections, where n is 3 or more. The cross-sectional shape of the fibers may be multilobal.

The strength (titer) of the fibers according to the invention can be represented by the thread weight. It corresponds to 1 g of fiber mass per 10 km of 1 dtex fiber length. Typical thread weights range from 1 to 100000 dtex.

The fineness of the preferred monofilament, bristle or staple fibers of the present invention is preferably at least 10 dtex and can vary over a wide range. The preferred fineness of the monofilament, bristle or staple fibers ranges from 10 to 30000 dtex, especially 45 to 20000 dtex.

The components required for the production of the fibers of the present invention are known per se and are partially commercially available, or can be prepared according to processes well known per se.

The fibers of the present invention are preferably used in the manufacture of textile fabrics, in particular woven fabrics, laid-fabrics, knitted fabrics, meshwork or knitting. These textile fabrics are made using well known techniques.

The production of the fibers according to the invention can be carried out by a well-known melt spinning process with one or more stretching and fixing of the fibers obtained.

The invention also relates to the method of the polyketone fiber described above.

In a first aspect of the process according to the invention, the polyketone raw material is administered into the extruder together with the steric hindered phenol and pressed through a nozzle plate in a molten form. The nozzle plate can have one or more radiation capillaries. The resulting filament is detracted from the spinning capillaries. The decay speed is usually 1 to 120 m / min, particularly 5 to 50 m / min.

The steric hindrance phenol and / or other additives can be administered in the form of a master batch containing additives / additives and a thermoplastic polymer, which can be polyolefin, polyester, polyurethane, polyphenylene sulfide, polyphenyl Len sulfone, polyphenylene ether, polyphenylene ketone, polyphenylene ether ketone, liquid crystal polymer, additional aliphatic polyketone, polyamide and / or polyoxymethylene.

In general, the nozzle plate is part of a spinning device consisting of a filter device for a spinning mass, and a downstream nozzle plate.

The temperature of the spinning material, on the one hand, ensures sufficient fluidity of the spinning material, and on the other hand, the thermal stress of the polyketone is limited, so that crosslinking and decomposition reactions in the spinning material as well as gel formation are maintained within a limited range or even completely It must be selected in a way that allows it to be suppressed.

In the first aspect of the process of the present invention, a polyketone raw material stabilized with an antioxidant and a selected polymer derived from a masterbatch are used. At this time, the temperature of the spinning product when leaving the spinning capillary may be in the range of 200 to 300 ° C, preferably 220 to 240 ° C.

The diameter of the spinning capillaries is selected by the skilled artisan depending on the desired fiber weight. The typical diameter is in the range of 10 μm to 5 mm, and in the case of monofilament or bristle, it is preferably in the range of 0.1 to 1 mm. These specifications correspond to the diameter of the hole on the outlet side of the polymer material.

One or more stretching with heat exposure is incorporated into the spinning process, giving the thread the desired final properties. Those skilled in the art are aware of this procedure.

It is preferred that the filaments are stretched several times after spinning, especially at a total stretching ratio ranging from 1: 3 to 1:15, preferably from 1: 4 to 1: 8.

It is particularly preferred to have at least one relaxation step (fixation step) followed by a stretching step (s). The stretched filament is thermally treated while maintaining the fiber tension, so that the stress embedded in the filament can be reduced.

The resulting filaments are then supplied in a suitable storage form, for example recoiling or cutting into staple fibers in a cutting device.

In a second aspect of the process of the present invention, the polymer blend is an aliphatic polyketone, and polyolefin, polyester, polyurethane, polyphenylene sulfide, polyphenylene sulfone, polyphenylene ether, polyphenylene ketone, polyphenylene ether It is produced from ketones, liquid crystal polymers and / or additional aliphatic polyketones, spun through conventional spinning capillaries as described above, or aliphatic polyketones on the one hand, and polyolefins, polyesters, polyurethanes, poly on the other hand Phenylene sulfide, polyphenylene sulfone, polyphenylene ether, polyphenylene ketone, polyphenylene ether ketone, liquid crystal polymer, additional aliphatic polyketone, polyamide and / or polyoxymethylene are spun through a spinning capillary. Component filaments are prepared. Otherwise, the procedure in the second aspect corresponds to the procedure in the first aspect.

In a second aspect of the process according to the invention, antioxidants, preferably steric hindered phenols, may be present in the polymer component. However, this may be done in the absence of antioxidants.

In addition, in the second aspect, the temperature of the spinner, on the one hand, ensures sufficient fluidity of the spinner, and on the other hand, the thermal stress of the aliphatic polyketone and other polymer components remains limited, thereby crosslinking and crosslinking in the spinner. It should be chosen in such a way that the decomposition reaction as well as the gel formation can be kept within a limited range or even completely inhibited.

In the second aspect of the process of the present invention, polymer raw materials that are not necessarily stabilized with antioxidants can be used. Here, the temperature of the spinning product when leaving the spinning capillary may be in the range of 200 to 300 ° C, preferably 220 to 260 ° C.

In a third aspect of the process according to the invention, blends of aliphatic polyketone and polysiloxane particles and / or poly (meth) acrylate particles are spun through conventional spinning capillaries as described above.

The present invention relates to a method of making the polyketone fiber described above, comprising the following measures:

i) thermoplastic aliphatic polyketones in the extruder, sterically hindered phenols, polyolefins, polyesters, polyurethanes, polyphenylene sulfides, polyphenylene sulfones, polyphenylene ethers, polyphenylene ketones, polyphenylene ether ketones and / Or mixing with a masterbatch containing a polymer selected from the group consisting of liquid crystal polymers to form a spinneret,

ii) extruding the spinning material from step i) through a nozzle plate having one or more spinning capillaries, wherein the temperature of the spinning material at the outlet side of the spinning capillary (s) is 200 to 300 ° C, preferably 220 to Step, in the range of 260 ℃,

iii) step of decaying the formed filaments with a decay rate in the range of 1 to 120 m / min, in particular 5 to 50 m / min, preferably selected so that the ratio of decay rate to the outflow rate of the spinning material from the spinning capillary exceeds 1 Doing, Steps,

iv) stretching the formed filament one or more times,

v) optionally loosening the formed filaments,

vi) optionally rewinding or cutting the formed filaments.

The present invention relates to a method of making the polyketone fiber described above, comprising the following measures:

i) Mixing thermoplastic aliphatic polyketones with polyolefins, polyesters, polyurethanes, polyphenylene sulfides, polyphenylene sulfones, polyphenylene ethers, polyphenylene ketones, polyphenylene ether ketones and / or liquid crystal polymers in an extruder Forming a radioactive material,

ii) extruding the radiant from step i) through a nozzle plate having one or more radiating capillaries, wherein the temperature of the radiant at the outlet side of the radiating capillary (s) is 200-300 ° C, preferably 220-260 ℃ range, step,

iii) step of decaying the formed filaments with a decay rate in the range of 1 to 120 m / min, in particular 5 to 50 m / min, preferably selected so that the ratio of decay rate to the outflow rate of the spinning material from the spinning capillary exceeds 1 Doing, Steps,

iv) stretching the formed filament one or more times,

v) optionally loosening the formed filaments,

vi) optionally rewinding or cutting the formed filaments.

The present invention relates to a further method of making the polyketone fibers described above, comprising the following measures:

ia) providing a first extruder containing a thermoplastic aliphatic polyketone to a first extruder,

ib) polyolefin, polyester, polyurethane, polyphenylene sulfide, polyphenylene sulfone, polyphenylene ether, polyphenylene ketone, polyphenylene ether ketone, liquid crystal polymer, other aliphatic polyketone, polyamide and / or poly Providing a second extruder containing oxymethylene to a second extruder,

ii) extruding the first spinner from step ia) and the second spinner from step ib) through a nozzle plate having at least one spinneret, so that the spinneret is through the first spinner and the second spinneret As a step of allowing flow, the temperature of the first and second radiators at the outlet side of the spinning capillary (s) ranges from 200 to 300 ° C, preferably from 220 to 260 ° C,

iii) step of decaying the formed filaments with a decay rate in the range of 1 to 120 m / min, in particular 5 to 50 m / min, preferably selected so that the ratio of decay rate to the outflow rate of the spinning material from the spinning capillary exceeds 1 Doing, Steps,

iv) stretching the formed filament one or more times,

v) optionally loosening the formed filaments,

vi) optionally rewinding or cutting the formed filaments.

The invention also relates to a method of making the polyketone fiber described above, comprising the following measures:

i) mixing the thermoplastic aliphatic polyketone in an extruder with a masterbatch containing steric hindrance phenol and polysiloxane particles and / or poly (meth) acrylate particles to form a spinneret,

ii) extruding the radiant from step i) through a nozzle plate having one or more radiating capillaries, wherein the temperature of the radiant at the outlet side of the radiating capillary (s) is 200-300 ° C, preferably 220-260 ℃ range, step,

iii) step of decaying the formed filaments with a decay rate in the range of 1 to 120 m / min, in particular 5 to 50 m / min, preferably selected so that the ratio of decay rate to the outflow rate of the spinning material from the spinning capillary exceeds 1 Doing, Steps,

iv) stretching the formed filament one or more times,

v) optionally loosening the formed filaments,

vi) optionally rewinding or cutting the formed filaments.

The present invention relates to a method of making the polyketone fiber described above, comprising the following measures:

i) mixing a thermoplastic aliphatic polyketone with polysiloxane particles and / or poly (meth) acrylate particles in an extruder to form a spinneret,

ii) extruding the radiant from step i) through a nozzle plate having one or more radiating capillaries, wherein the temperature of the radiant at the outlet side of the radiating capillary (s) is 200-300 ° C, preferably 220-260 ℃ range, step,

iii) step of decaying the formed filaments with a decay rate in the range of 1 to 120 m / min, in particular 5 to 50 m / min, preferably selected so that the ratio of decay rate to the outflow rate of the spinning material from the spinning capillary exceeds 1 Doing, Steps,

iv) stretching the formed filament one or more times,

v) optionally loosening the formed filaments,

vi) optionally rewinding or cutting the formed filaments.

Preferably, the fibers of the invention, especially in the form of monofilaments, are used in the manufacture of textile fabrics, especially woven fabrics, spiral meshes, laid fabrics or knitted fabrics. These textile fabric structures are preferably suitable for use in sieves or conveyor belts. Another important application area is fibers for brushes or fibers for oral hygiene and fibers for personal care, as well as staple fibers in composite materials, for example with concrete as a matrix material. There is.

Accordingly, the present invention also relates to textile fabrics containing the aforementioned fibers, in particular textile fabrics in the form of woven, knitted, knitted, mesh or laid fabrics.

The fiber according to the present invention is characterized by a very good glide property due to a combination of excellent mechanical properties, for example high tensile modulus and good loop and knot strength, excellent bending recovery, and high wear resistance. Is done.

It can be used in various fields. It is preferably used in fields where increased wear and tear and high mechanical stress can be expected, especially in high temperature wet environments. Examples thereof are for screen cloth and filter cloths for gas and liquid filters, for dryer-belts, for example for cleaning all kinds of food or especially paper production. Use in brushes, for example in household items, personal care products such as oral hygiene, for example as a toothbrush. Other applications may be non-woven, such as spunbond, meltblown, airlaid, wetlaid, spunlaced, or thermal bonding ( These include fluidization tapes in the manufacture of thermobonded fabrics, process belts for the board industry, use as conveyor belts and process belts, or as staple fibers for concrete or composite reinforcement.

The invention also relates to the use of the aforementioned fibers in the form of monofilaments, especially as paper machine clothing in conveyor belts and filtration sieves.

In another preferred embodiment, various stabilizers, such as antioxidants for thermal stability and / or hydrolysis stabilizers, are added to the fibers of the present invention. Such variants can be used in wet environments, for example in the drying section of a paper machine, as well as in other continuous industrial drying and filtration processes, for example wood chipboard, pellets, or more generally for use as fuel. It is particularly suitable for drying processes in the drying of biomass.

Particularly preferably the fibers of the invention are used in the form of monofilaments as sheet paper in the sheet forming section and / or in the drying section of the paper making machine.

These monofilaments are used, for example, in the lower part of forming sieves in a paper machine. This can be carried out 100% as a lower part and / or as a so-called alternating shot (alternately altering the monofilament with, for example, polyamide, polyester or polyphenylene sulfide monofilament). Aliphatic polyketones significantly reduce sliding friction, significantly reducing the driving force of the paper machine, thereby significantly saving energy. In addition, the monofilaments according to the present invention are more abrasion resistant than similar monofilaments made of polyethylene terephthalate, polybutylene terephthalate or polycyclohexaneterephthalate or polyamide without the use of aliphatic polyketones.

The fibers of the present invention are in the form of a filter cloth or knitted fabric, as a support for a membrane with a wide mesh and high dimensional stability (e.g., as a support for a reverse osmosis membrane that must withstand a continuous pressure of 50 bar), and paper and It is particularly preferred to be used as a process cloth for the production of nonwovens.

In addition, the fibers according to the invention are very suitable for the production of conveyor belts, which require a combination of dimensional stability and good sliding properties.

Another preferred field of application of the fibers according to the invention is their use in brushes, especially toothbrushes. Here, the fibers according to the invention are generally used in the form of bristles.

For this purpose, monofilaments are available in endless form or in bundles grouped in cut form or as brushes.

The invention is explained in more detail by the following examples. These examples are intended to illustrate the invention and should not be understood as limiting.

Different aliphatic polyketones were used in the examples below. The sheath polymer has a M630A type with a melting point (according to ASTM D3418) of 222 ° C or alternatively a low melting point variant, for example a M410F type with a melting point (according to ASTM D3418) of 199 ° C, or a melting point (according to ASTM D3418) It was of type M620A at 207 ° C. The core polymer can be, for example, semi-crystalline PET (polyethylene terephthalate) or polycarbonate (e.g. Makrolon 2456 from Covestro) with a melting point of 254 ° C. or aliphatic polyketone with a higher melting point (type M630A from Hyosung) or It was a blend of these ingredients.

Example 1

Combination of two commercially available aliphatic polyketones, type M630A from Hyosung Polyketone, a high melting point material present in the core, and type M410F from Hyosung Polyketone, a low melting point material present in the sheath.

To prepare these two-component monofilaments, both components were co-extruded in one manufacturing step. The relative feed rate allowed the core / sheath ratio to be adjusted, where it was 70/30. In this process, the monofilament was stretched several times under temperature exposure. The total draw ratio was 1: 3.7.

The above process was used to obtain a bicomponent monofilament having the following properties:

The combination of two polyketone variants in one monofilament allows a thermally induced physical combination at the monofilament intersection. As a result, the fabric structure has increased shear stability, for example. In addition, this cross-linking structure exhibits thickening at the crossing point. This property is important, for example, due to the positive flow properties for fluid filtration.

Example 2

Stabilized polyethylene terephthalate (PET), 99.3% of raw material type 12 from Invista and 0.7% of Stabaxol from Lanxess were used in the core, and M630A type from Hyosung Polyketone, an aliphatic polyketone, was used in the sheath.

This monofilament was coextruded in one production step. The relative feed rate allowed the core / sheath ratio to be adjusted, where it was 70/30. In this process, the monofilament was stretched several times under temperature exposure. The total draw ratio was 1: 4.3.

The above process was used to obtain a bicomponent monofilament having the following properties:

The combination of PET and aliphatic polyketone in a monofilament combines properties common to PET with the surface properties of polyketone. As a result, the friction value can be significantly reduced, resulting in a fabric structure that can save energy, for example when used on a conveyor belt. The advantage of the PET core lies in the processing properties of the monofilament in a weaving process similar to PET (e.g., the same floating).

Example 3

The M630A type from Hyosung Polyketone, an aliphatic polyketone, was used as the matrix polymer. In addition, 1.0% by weight of PMSQ E + 580 type from Coating Products, an average diameter 8 μm polysiloxane bead, was dispersed in a matrix polymer.

The obtained monofilament exhibits the following properties:

As shown in EP 2 933 961 A1, the addition of polysiloxane beads reduces the coefficient of friction for the metal or ceramic over the resulting surface structure of the monofilament. The same applies to use with aliphatic polyketones (see table below). The monofilaments of comparative experiments V1 to V5 mentioned in the table are described below.

Example 4

It proceeded as in Example 3. As the matrix polymer, the M630A type from Hyosung Polyketone, an aliphatic polyketone, was used. As the second polymer component, a 7% liquid crystal polymer (Liquid Crystal Polymer, LCP) of Vectra A950 type from Ticona, a polyester from hydroxybenzoic acid and hydroxynaphthaline carboxylic acid, was added. The monofilament obtained exhibited the following properties:

The combination of polyketone and LCP has been shown to increase tenacity while simultaneously increasing E-modulus. This is due to the synergistic effect of LCP fibrils in the polyketone matrix. The increase in E-modulus is shown in the table below. The monofilaments of comparative experiments V1 to V2 mentioned in the table are described below.

Comparative Examples V1 to V4

The M630A type from Hyosung Polyketone, an aliphatic polyketone, was used at 100%.

To prepare the monofilament, the polyketone was extruded, spun and stretched several times under temperature exposure.

Depending on the draw ratio, the following properties were found:

Comparative Example V5

RT 12 type from Invista, a commercially available PET, was used at 100%. It proceeded as in Comparative Examples V1 to V4. The monofilament obtained exhibited the following properties:

Claims (22)

Thermoplastic aliphatic polyketone as the first polymer and polyolefin, polyester, polyurethane, polyphenylene sulfide, polyphenylene sulfone, polyphenylene ether, polyphenylene ketone, polyphenylene ether ketone, liquid crystal polymer as the second polymer, and And / or a melt-spun fiber containing an aliphatic polyketone, wherein when the aliphatic polyketone is present as the second polymer, its melting point is at least 5 ° C higher than the melting point of the aliphatic polyketone of the first polymer. , Melt spun fiber. Thermoplastic aliphatic polyketone as the first polymer and polyolefin, polyester, polyamide, polyoxymethylene, polyurethane, polyphenylene sulfide, polyphenylene sulfone, polyphenylene ether, polyphenylene ketone, polyphenyl as the second polymer Melt spinning fibers containing ren ether ketones, liquid crystal polymers and / or aliphatic polyketones, wherein the polymers are in the form of two or more fiber components that are spatially separated from one another but are interrelated with each other, and the aliphatic polyketone is the agent. 2 A melt spun fiber, when present as a polymer, whose melting point is at least 5 ° C. higher than the melting point of the aliphatic polyketone of the first polymer. A melt spun fiber containing a thermoplastic aliphatic polyketone as a matrix polymer and particles of polysiloxane or poly (meth) acrylate dispersed therein. The melt spun fiber according to any one of claims 1 to 3, wherein the thermoplastic aliphatic polyketone is an ethylene- / propylene- / CO- terpolymer. The melt spun fiber according to any one of claims 1 to 4, wherein the fiber contains an antioxidant, preferably a steric hindered phenol, optionally in combination with a co-stabilizer. The melt spun fiber according to claim 1 or 2, wherein the polyester is an aromatic-aliphatic polyester homopolymer or copolymer, preferably a polyethylene terephthalate-homopolymer or a copolymer comprising ethylene terephthalate units. The melt spun fiber according to claim 1 or 2, wherein the polyester is polycarbonate. 8. The polymer according to claim 1, wherein the first polymer and the second polymer are present as a polymer blend, one of the polymers forms a matrix and the other polymer is in fibril form. Furnace, melt-spun fiber dispersed in the matrix. 10. The melt spun fiber of claim 8, wherein the fibers are in the form of island-in-the-sea fibers, wherein one polymer component is arranged in fibril form within the polymer matrix component. The method according to any one of claims 2 or 4 to 7, wherein sheath and polyolefin from an aliphatic polyketone, polyester, polyamide, polyoxymethylene, polyurethane, polyphenylene sulfide, polyphenylene sulfone, A melt spun fiber, present as a core-sheath fiber with a core from polyphenylene ether, polyphenylene ketone, polyphenylene ether ketone, liquid crystal polymer and / or another aliphatic polyketone. The core-sheath according to claim 10 having a sheath from an aliphatic polyketone and a core from polyester, polyphenylene sulfide, polyphenylene ether, polyphenylene ketone, polyphenylene ether ketone or another aliphatic polyketone. A melt spun fiber, present as a fiber. The fiber part of claim 2, wherein the polyolefin, polyester, polyamide, polyoxymethylene, polyphenylene sulfide, polyphenylene sulfone, polyphenylene ether, and polyphenylene are in contact with the fiber part made of an aliphatic polyketone. A melt spun fiber, which exists as a side-by-side fiber having another fiber portion consisting of ketone, polyphenylene ether ketone, liquid crystal polymer and / or another aliphatic polyketone. The method of claim 12, wherein the fiber portion made of an aliphatic polyketone and another fiber portion made of polyester, polyphenylene sulfide, polyphenylene ether, polyphenylene ketone or polyphenylene ether ketone in contact with the fiber part, A melt spun fiber, present as having side-by-side fibers. 12. The sheath and polyolefin, polyester, polyamide of claim 2 or 4 to 7 or 10 to 11, produced from a thermoplastic ethylene- / propylene- / CO-terpolymer. Core-sheath comprising a core produced from polyoxymethylene, polyphenylene sulfide, polyphenylene sulfone, polyphenylene ether, polyphenylene ketone, polyphenylene ether ketone, liquid crystal polymers and / or another aliphatic polyketone Formed as a fiber, wherein the mass of the sheath is 5 to 50% by weight and the mass of the core is 95 to 5% by weight, and the core and / or the sheath is optionally an additive, preferably a hindered phenol, UV- Stabilizers, pigments, dyes, fillers, matting agents, crosslinking agents, crystallization accelerators, lubricants, flame retardants, antistatic agents, hydrolysis stabilizers, plasticizers, impact strength modifiers and / or fluoropolymers in total 10% by weight or less, and the percentage is relative to the total mass of the fiber, melt spun fiber. 15. The melt spun fiber according to any one of claims 1 to 14, present as an endless monofilament or combined into a bundle and cut form, or as a brush. A textile fabric comprising the melt spun fiber according to claim 1 in the form of a woven, knitted, knitted, mesh or laid fabric. Melt spinning according to any one of claims 1 to 15 for application to screen cloths, filter cloths for gas and liquid filters, process belts, dryer belts and all kinds of cleaning brushes. Use of fiber. The use according to claim 17, wherein the melt spun fiber is used as a fluidizing tape in the manufacture of nonwovens, as a process belt for the board industry, as a conveyor belt, and as a process belt. Use according to claim 17, wherein the melt spun fiber is used in a brush, preferably in a toothbrush, for cleaning purposes in household or personal care products. 18. The use according to claim 17, wherein the melt spun fiber is used as staple fiber for concrete or composite reinforcement. 18. The use according to claim 17, wherein the melt spun fiber is used as a paper machine clothing, in the form of a monofilament in conveyor belts and in filtration sieves. Use according to claim 17, wherein the melt spun fiber is used in bristle form, in a brush, preferably a toothbrush.