Musical string

WO2026167044A1PCT designated stage Publication Date: 2026-08-13ZDENKA INFELD ASSET MANAGEMENT GMBH
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Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2026-02-04
Publication Date
2026-08-13

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Abstract

A musical string comprises a string core and at least one wrap layer. The wrap layer comprises at least a first wrap element, which is wrapped helically around the string core. The string core is made of metal and / or plastic. Interstices in the wrap layer contain a damping agent. The damping agent comprises at least one aromatic polymer and at least one solvent.
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Description

Description

[0001] The invention relates to a musical string according to the preamble of claim 1.

[0002] There are musical strings that have a load-bearing core and a non-load-bearing first winding layer arranged on it. This first winding layer consists of at least one winding element wound helically around the core. A second or more winding layers, also consisting of helically wound elements, can be arranged around the first winding layer.

[0003] There are gaps between the adjacent turns of a winding element. Their cross-section and area depend on the cross-sectional shape of the respective winding element. Winding elements with a circular cross-section are widespread. These form a pronounced gap between the neighboring turns. This gap also has a helical shape around the string core.

[0004] Different types of string cores are known. The simplest string core consists of a single steel wire. However, most string cores have several load-bearing components.

[0005] So-called rope cores, such as those known from European patent application EP 2 131 352 A1 of the applicant, comprise several intertwined metal wires. Between the adjacent metal wires are depressions that extend over the entire length of the musical string. These depressions form spaces separating the string from the surrounding material.

[0006] In so-called synthetic strings, the string core comprises a predetermined number of synthetic fibers. European patent application EP 2 099 022 A1, filed by the applicant, describes such musical strings. There are spaces between the individual synthetic fibers.

[0007] The sound and playing characteristics of a musical string also depend on its internal damping.

[0008] It is known to place at least one damping or binding agent in the spaces within a musical string. This damping or binding agent affects the internal damping of the musical string and consequently its sound and playing characteristics.

[0009] Internal damping can have very different and individual effects on a given musical string. Insufficient internal damping, for example, can lead to a sustained vibration that lasts so long it negatively impacts bow control and / or the playing flow. Furthermore, too little internal damping can result in a harsh and impure sound, as non-periodic vibrations, in particular, are not sufficiently damped and become too prominent in the string's tonal character. Conversely, excessive internal damping can lead to important high harmonics being too heavily damped and / or prevent the string from being properly excited during playing.

[0010] Various types of damping agents and binders with different properties are known. Known damping agents and binders include, among others, wax, especially natural waxes such as beeswax or carnauba wax, and / or synthetic waxes such as polyolefin waxes. Others include paraffin, oil (such as fatty oils, mineral oils, and / or synthetic oils), and resins (especially natural resins such as larch resin and / or spruce resin) and / or synthetic resins such as polyester resin.

[0011] The applicant's Austrian patent applications AT 506 135 A1 and AT 517401 A1 address specific details and effects of damping agents and binders, respectively. These applications also describe further possibilities and compositions of damping agents and binders. EP 2704 136 A1, filed by Larsen Strings A / S, also addresses specific details and effects of damping agents and binders, particularly when used in combination with nanoscale solid particles. According to this disclosure, strings for bowed string instruments are specifically treated with such damping agents and binders.

[0012] The use of damping and binding agents mentioned above – those for modifying the sound characteristics of the string by preferably completely filling its free spaces – must be distinguished from the use of coatings of different kinds.

[0013] EP 1 466314 B1, published by the guitar manufacturer Gibson, describes the use of a hydrophobic, preferably fluoroaliphatic, polymer applied in solution to create coatings on individual winding elements. The described embodiments mention a single application of 2-10% solutions followed by the removal of the solvents, which, as is self-evident, does not nearly completely fill the spaces. The aim of such coatings is not to modify the tonal characteristics of the string, but rather to preserve the already established tonal characteristics in the long term. This is particularly important for strings in plucked instruments, as these are in constant contact with sweat, grease, and other contaminants resulting from contact with human skin, which can potentially cause corrosion and thus changes in the string's properties.In the case of the strings described in EP 1 466314 B1, the "improvement of the sound" refers to the fact that the string coated with the binder used does not change its natural, undamped sound for as long as possible, i.e., that the sound characteristics of the strings do not gradually change or deteriorate in an undesirable way during their lifespan.

[0014] US patent 2005 / 0103180 A1 from Gore Enterprise Holdings describes the use of a porous plastic tape, preferably Teflon, wound spirally around the string to coat it. Such coatings primarily serve to repel foreign matter and contaminants, especially those that fill spaces and pores and thus gradually and undesirably alter or degrade the string's tonal characteristics.

[0015] The object of the invention is to further develop a musical string of the known type in such a way that its tonal and / or playing characteristics can be predetermined by filling voids with suitable damping and binding agents, without having to alter the fundamental structure of the musical string. In the present invention, the damping agent is used to selectively modify the sound. This can be achieved with the damping agents according to the invention by adjusting the chemical-physical "internal" damping properties of the damping agent itself—initially independent of its position in the string. The position then produces a further effect. "Suitable" therefore refers not only to successful insertion, but also to the damping properties in detail, which, in combination with the string's structure, achieve a predetermined tonal effect that differs fundamentally from that of a string without a damping agent.According to a preferred embodiment of the present invention, the musical string according to the invention is a musical string for a stringed instrument.

[0016] According to one aspect of the present disclosure, a musical string comprises a core and at least one winding layer. The winding layer includes at least one first winding element, which is wound in a helix around the core. The core is made of metal and / or plastic. Spaces within the winding layer contain a damping agent. The damping agent comprises at least one aromatic polymer and at least one solvent.

[0017] According to one aspect of the present disclosure, in a musical string, at least one aromatic polymer has an aromatic compound in the main chain.

[0018] According to one aspect of the present disclosure, in a musical string at least one aromatic polymer is a high-performance polymer.

[0019] According to one aspect of the present disclosure, in a musical string, at least one aromatic polymer is selected from the following polymers: polystyrene, phenolic resins (e.g., novolacs), melamine resins, polyetheretherketone (PEEK), polysulfone (PSU).

[0020] According to one aspect of the present disclosure, in a musical string, the at least one solvent has a viscosity of 0.2-200 mPa.s, preferably 0.2-100 mPa.s, particularly preferably 0.2-50 mPa.s.

[0021] According to one aspect of the present disclosure, in a musical string, at least one solvent is selected from the following solvents: a) aprotic polar solvents such as: N-methyl-2-pyrrolidone (NMP), dimethylformamide (DMF), γ-butyrolactone, dimethyl carbonate, diethyl carbonate, dimethylacetamide (DMAA), dimethyl sulfoxide (DMSO), propylene carbonate, ethylene carbonate, N-methylformamide, sulfolane; b) Monomers such as 1,4-butanediol, ethanediol, 1,2-propanediol, 1,3-propanediol, 1,6-hexanediol, 1,5-pentanediol, neopentyl glycol, diethylene glycol, triethylene glycol, dipropylene glycol, 3-methyl-1,5-pentanediol, glycerol, ethylenediamine, propanediamine-1,2, propanediamine-1,3, 2-methylpropanediamine-1,3 and 2,2-dimethylpropanediamine-1,3, styrene, o-methylstyrene, m-methylstyrene, p-methylstyrene; and / or c) common solvents such as: acetone, acetonitrile, aniline, benzene, benzonitrile, 1-butanol, 2-butanol, tert-butyl methyl ether, chloroform, cyclohexane, 1,4-dioxane, acetic acid, ethyl acetate, ethanol, methanol, ethylene dichloride, ethylene glycol dimethyl ether, 2-propanol, 1-propanol, isoamyl alcohol, butanone, nitrobenzene, tetrachloroethene, toluene, 1,1,1-trichloroethane, 2-butanone, 1-pentanol, 2-ethyl-1-butanol, cyclohexanol, tetrahydrofurfural alcohol, 2-ethylhexanol, benzyl alcohol, ethylene glycol monoethyl ether, ethylene glycol monomethyl ether, ethylene glycol monopropyl ether, ethylene glycol mono-nobutyl ether, o-xylene, m-Xylene, p-Xylene, butyl acetate, propyl acetate, hexanal, cyclohexanone, limonene, α-pinene, β-pinene, camphene, methyl isobutyl ketone, menthol, dipropylene glycol methyl ether, trimethylbenzene, ethylbenzene, methoxypropanol, methoxypropyl acetate, butyl glycol, butyl diglycol. According to a preferred embodiment, mixtures of two or more of the aforementioned solvents can also be used.

[0022] According to one aspect of the present disclosure, the damping agent in a musical string comprises a mixture of at least two different aromatic polymers.

[0023] According to one aspect of the present disclosure, in a musical string the damping agent additionally comprises another non-aromatic polymer.

[0024] According to one aspect of the present disclosure, in a musical string the damping agent further comprises solid particles with a particle size of 10 nm to 10 pm.

[0025] According to one aspect of the present disclosure, in a musical string the damping agent further comprises submicrometer-sized nanoscale solid particles.

[0026] According to one aspect of the present disclosure, the damping medium in a musical string has a viscosity of 100mPa.s - WO.OOO.OOOmPa.s (20°C).

[0027] According to one aspect of the present revelation, the musical string is a musical string for a stringed instrument.

[0028] According to one aspect of the present disclosure, the cavities within a winding layer and between adjacent layers are completely filled.

[0029] In principle, the use of the damping agent according to the invention, due to its internal damping through adhesion to the core and winding elements, and the layer thickness and its variation within the string, enables a significant influence on the sound and, consequently, on the specific timbres of a musical string. The damping agents according to the invention follow the movement within the spaces and the geometric changes of these spaces as the string vibrates. In particular, the damping agents according to the invention influence high-frequency vibration types such as longitudinal and torsional vibrations of the musical string, and thus the high overtones in the sound. The precisely adjustable damping of the overtones not only offers tonal advantages but also has a positive effect on the playability of the string, i.e., the playing feel for the musician.

[0030] The damping agents according to the invention are typically applied to the string during the manufacturing process by means of application nozzles or by brushing. During application and when the string is vibrated, the damping agents are subjected to high tensile and compressive forces and high shear forces.

[0031] The damping agent according to the invention comprises at least one aromatic polymer and at least one solvent. By using these two components, the material properties (in particular the viscosity) can be precisely adjusted, and the damping behavior can be specifically influenced. This allows, for example, the sound to be positively affected. Furthermore, the damping agents according to the invention have a positive influence on storage stability and corrosion resistance, and thus on the service life of the string. The damping agents according to the invention result in a longer service life for the string because the properties of the damping agent do not change over time, and because of their chemical and physical properties, there is essentially no change in the predefined tonal characteristics of the string due to the leakage of the damping agent.

[0032] The material properties can be further improved by using additional components. Furthermore, the material properties can be positively influenced by using a mixture of at least two different aromatic polymers and Z, or by using an additional non-aromatic polymer. Preferably, a suitable mixture is formulated during the production of the damping agent.

[0033] Different polymers exhibit different properties when used in damping agents. Surprisingly, it was found that the aforementioned advantageous properties can be achieved particularly effectively through the use of aromatic polymers (especially in combination with at least one solvent).

[0034] Preferably, the at least one aromatic polymer has an aromatic compound in its main chain. Particularly preferably, the at least one aromatic polymer is a high-performance polymer. Aromatic polymers containing an aromatic compound in their main chain, and especially high-performance polymers, are characterized by higher stability against temperature spikes and shear forces during the manufacturing process. The use of aromatic polymers containing an aromatic compound in their main chain, and especially high-performance polymers, thus leads to a significant improvement in processability and therefore has a positive effect on certain manufacturing processes.

[0035] The term "polymer" refers in particular to substances consisting of macromolecules composed of identical molecular building blocks, so-called repeat units. According to the present invention, a polymer contains at least 5 repeat units. Therefore, according to the present invention, the term "polymer" includes both oligomers and medium- and long-chain polymers.

[0036] Specific examples of at least one aromatic polymer are: polystyrene, phenolic resins (e.g., novolacs), melamine resins, polyetheretherketone (PEEK), polysulfone (PSU).

[0037] Preferably, the damping agent according to the invention comprises at least one aprotic polar solvent such as: N-methyl-2-pyrrolidone (NMP), dimethylformamide (DMF), γ-butyrolactone, dimethyl carbonate, diethyl carbonate, dimethylacetamide (DMAA), dimethyl sulfoxide (DMSO), propylene carbonate, ethylene carbonate, N-methylformamide, or sulfolane. Aromatic polymers, in particular those containing an aromatic compound in the main chain, and especially high-performance polymers, dissolve relatively well in these solvents.

[0038] According to a preferred embodiment, the damping agent according to the invention further comprises solid particles (e.g., submicrometer-sized nanoscale solid particles). These solid particles preferably have a particle size of 10 nm to 10 pm. Submicrometer-sized nanoscale solid particles preferably have a particle size of 10 nm to 500 nm. Preferred examples of submicrometer-sized nanoscale solid particles are disclosed, for example, in EP 2 704 136 A1.

[0039] Heavy metals or heavy metal compounds (e.g., oxides) are preferably used as solid particles. Examples include tungsten and tungsten oxide. The use of heavy metals or heavy metal compounds as solid particles allows the vibrational properties of the entire string to be influenced.

[0040] Furthermore, rheological additives such as layered silicates can be used as solid particles. This allows the rheological behavior of the damping agent to be positively influenced. Brief description of the characters

[0041] Further characteristics and advantages of the disclosure will become apparent in the course of the following description of its embodiments, which are given only as examples and are not limited, in conjunction with the accompanying drawings. The figures show:

[0042] Figure 1 shows a schematic cross-sectional view of a musical string.

[0043] Figure 2 shows another schematic cross-sectional view of a musical string, similar to Fig. 1.

[0044] Figure 3 shows the influence of 3 different damping materials on the overtone spectrum of a string.

[0045] Figure 4 shows the evaluation of 5 criteria by a group of experts.

[0046] It should be noted at the outset that in the differently described embodiments, identical parts are designated with the same reference numerals or the same (component) designations, whereby the disclosures contained in the entire description can be applied analogously to identical parts with the same reference numerals or the same component designations. Furthermore, the positional designations chosen in the description, such as top, bottom, side, front, back, left, right, etc., refer to the figure directly described and illustrated, and these positional designations must be applied analogously to the new position if the position changes. Sequence numbers such as first, second, etc., serve only to distinguish the terms they designate and say nothing about a priority or the presence of further terms / components. Detailed description of the embodiment

[0047] Reference is initially made to Fig. 1, which shows a musical string 10 in a longitudinal section. A section through the musical string 10 is shown to illustrate the individual layers and their structure. For clarity, the cross-sectional areas are not hatched. Since the musical string 10 is fundamentally symmetrical about its longitudinal center axis L, only the upper part is shown in Fig. 1, and the lower part is omitted for clarity.

[0048] The musical string 10 comprises a string core 11 with a round cross-section (only half the diameter is shown and the cross-section is not visible due to the longitudinal section), an intermediate winding layer 12, and an outer winding layer 13. The intermediate winding layer comprises a first winding element 14 and an optional third winding element 16 (optionally a further fifth winding element), which can have a substantially round or substantially rectangular cross-section (rectangularly shown in Fig. 1) The first winding element 14 and the third winding element 16 are wound in turns of a helix around the string core 11. An optional fifth winding element may be arranged in the intermediate winding layer (not shown). The disclosure for the third winding element applies mutatis mutandis. The first winding element 14 and the third winding element 16 are made of plastic. The first winding element 14 and the third winding element 16 may be made of different plastics or metals. Spaces 20 are arranged between the first winding element 14 and the third winding element 16, in which damping material 21 is located.

[0049] The winding elements of the outer winding layer in Figures 1 and 2 all have a rectangular cross-section. In principle, a different cross-section, e.g., round or polygonal, can be chosen for each winding element (independently of the other winding elements). The second winding element 15 and the optional fourth winding element 17 are each wound in a helix around the first winding element 14 and the third winding element 16 of the intermediate winding layer 12. These have a rectangular cross-section.

[0050] Fig. 2 is a similar variant to the musical string 10 shown in Fig. 1, wherein the intermediate winding layer 12 comprises a first winding element 14 and an optional third winding element 16 with a round cross-section.

[0051] The damping materials mentioned above, which are used to construct a musical instrument string, can have the following composition:

[0052] Example 1: RESISTHERM™ AI 244 L from Allnex is a solution of approximately 44% of a proprietary polyamide imide in N-methylpyrrolidone. RESISTHERM™ AI 244 L was used unchanged.

[0053] Example 2: 100 g of ALNOVOL™ PN 870 – a proprietary novolac from Allnex – are dissolved in 100 g of methoxypropanol under a nitrogen atmosphere, reflux, and vigorous stirring. The resulting solution exhibits a dynamic viscosity of 1000–2000 mPa·s.

[0054] Example 3: 95g of the solution mentioned in Example 2 are combined with 5g of nano-graphene - provided by the company Roth (product number: 36LY.1, thickness: 1-4 nm, particle size: <2 pm) - and the resulting mixture is homogenized using a laboratory disperser.

[0055] Example 4: A solution of 20% ULTEM™ 1000 - a proprietary polyetherimide of SABIC - and 80% N-methylpyrrolidone was prepared and used unchanged according to Roxana SCARLET et al., REV. CHIM. (Bucharest), 63, No. 7, 2012, 688.

[0056] Example 5: 100g of the solution prepared in Example 4 is mixed with 1g of Garamite 1958 - a proprietary organophilic layered silicate from BYK - and the resulting mixture is homogenized using a laboratory disperser.

[0057] Example 6: 100g of the solution prepared in Example 4 are mixed with 2g of Garamite 1958 - a proprietary organophilic layered silicate from BYK - and the resulting mixture is homogenized using a laboratory disperser.

[0058] Example 7: 100g of the solution prepared in Example 4 are mixed with 4g of Garamite 1958 - a proprietary organophilic layered silicate from BYK - and the resulting mixture is homogenized using a laboratory disperser.

[0059] Example 8: 95 g of the mixture prepared in Example 2 are mixed with 5 g of nano-wolfram(VI) oxide – provided by Carl Roth (product number 12PK.1, 100-200 nm) – in portions, and the resulting mixture is blended at 120°C with vigorous stirring. The resulting dispersion is then processed immediately.

[0060] Example 9: 90g of the mixture prepared in Example 2 is mixed with 10g of nano-tungsten(VI) oxide – provided by Carl Roth (product number 12PK.1, 100-200nm) – in portions, and the resulting mixture is blended at 120°C with vigorous stirring. The resulting dispersion is then processed immediately.

[0061] Example 10: 70g VIALKYD® AC 290 / 70MPAC and 30g hand-milled ALNOVOL™ PN 870 are combined at 120°C with vigorous stirring and under nitrogen.

[0062] Example 11: 20g of lupizeta™ FPC-8225 - a proprietary solvent-soluble polycarbonate polymer from Mitsubishi Gas Chemical - and 20g of polyethylene glycol 6000 - provided by Roth (product number 0158.1) - are combined in 60g of propylene carbonate at 100°C with vigorous stirring and under nitrogen.

[0063] Example 12: VIALKYD® AC 290 / 70MPAC - a fatty acid-modified and phthalic acid-based alkyd resin from Allnex, present as a 70% solution in ethoxypropyl acetate / xylene - has its solvent removed by means of a fine vacuum and a temperature of 150°C while stirring vigorously.

[0064] Example 13: 40g of the material produced in Example 12 are dissolved in 10g of propylene carbonate at 70°C with vigorous stirring.

[0065] The strings described in EP 1 466314 B1 cannot be used in the following tests of cello A strings, as they are not only intended for a different instrument but are also manufactured with a round wire winding on the outside. This winding is not sufficiently suitable for bowing, making a direct comparison meaningless. For comparability, test strings were specially manufactured to demonstrate the different effect of the binding agent used in EP 1 466314 B1. TESTS AND MEASUREMENT RESULTS

[0066] To determine the effect of different damping and binding agents on the overtone spectrum of a cello string, several A-strings of the same construction were produced, using the same materials for the inner and outer windings and manufactured using the same method. These strings were filled with different damping agents. Fourier analysis of pizzicato notes was performed, averaging the results over six pizzicato excitations. The result is shown in the upper image of Fig. 3. The lower image of Fig. 3 shows the amplitudes of the partials determined from this analysis, normalized to the fundamental to clearly and comparably illustrate the differences between the partials.

[0067] For the measurements, strings with the following damping materials were used: 1. Dampening agent from Example 12 - an aromatic polymer without solvents (as described above) 2. Dampening agent from Example 13 - the same aromatic polymer with a solvent (as described above). 3. FluoroPel 804 from CYTONIX (a 4% solution of a fluoroacrylate-based polymer in a volatile, fluorinated solvent). Due to the properties of FluoroPel 804, complete filling of the gaps could not be achieved. 4. Without damping agent: A string is designated as a "reference" string that has been manufactured entirely without damping or binding agents.

[0068] The measurements performed yielded very clear results: The measurements of the string without damping agent ("reference") and the string with "FluoroPel 804" show largely very similar characteristics, while the string with the damping agent from "Example 12" exhibits excessive damping of the overtones, particularly in the range above 1500 Hz. The string with the damping agent from "Example 13" exhibits a visibly different overtone behavior – in some parts very similar to the string with "Example 12" (especially, for example, from 5060 Hz to 7700 Hz), but with less damping effect at other individual overtones (e.g., 2420 Hz, 2640 Hz, 3080 Hz, 4400 Hz). This demonstrates the sound-altering effect of the solvent used and the predictable influence on the damping effect in the damping agent according to the invention.

[0069] In order to have this change in damping effect confirmed by the musician as a "positive influence on the sound and playability", an expert group was consulted to evaluate sound and playing characteristics, since the measurements described above cannot easily visually represent the differences that the musician perceives as clearly audible.

[0070] The subjective sound test was conducted by an expert test group consisting of a professionally trained cellist, an amateur cellist, and a professionally trained double bassist. All three have extensive experience in evaluating strings.

[0071] The evaluation of the sound tests here goes beyond a simple description such as "the string has a more muted sound," as described in EP 2704 136 A1 of Larsen Strings A / S, since it concerns the predefined adjustment of the sound characteristics. The following five criteria were selected for evaluation with point allocation: Sound rating: Noisy (1 point) to Clear (10 points) Brilliant / Sharp (1 point) to Dull / Strongly Subdued (10 points) Simple (1 point) to Complex (10 points) Playability rating: Uncertain bow control (1 point) to secure bow control (10 points) Strenuous (1 point) to easy flow of play (10 points) Overall verdict: Liked least (1) to Liked most (10).

[0072] The result of the values ​​averaged over the individual assessments is shown in Fig. 4 and shows: 1. The string with the damping agent from “Example 12” shows a very clear, but dull / heavily damped, moderately complex sound, with secure bow control and easy playing flow. 2. The string with the damping material from "Example 13" exhibits a less clear, less damped, and significantly more complex sound with more tonal colors than the string with the damping material from "Example 12"—while also offering more secure bow control and a smoother playing flow. The overall rating is clearly better than that of the string with the damping material from "Example 12." "Example 13" is preferred over "Example 12." 3. Another string was made with the damping agent "PEG600" (a polyethylene glycol with a mean chain length of 600, provided by Merck; product number: 8.07486). This damping agent produces a noisy, poorly damped, and simple sound. Bow control and playing flow are significantly worse than with the string using the damping agent from "Example 12" and "Example 13". 4. The string with the binder "FluoroPel 804" exhibits a very noisy, harsh sound with uncertain bow control and a tiring playing flow. It is striking that the harshness of the sound and the uncertainty of bow control were perceived as even worse than with the string without the damping agent "reference," and it shows the worst results in all evaluations. 5. The string without damping material (“reference”) shows the second-worst results in all evaluations. The overall evaluation shows a relative ranking and indicates a clear preference for example 13 with the damping agent according to the invention.

[0073] The scope of protection is defined by the claims. However, the description and drawings must be consulted for the interpretation of the claims. Individual features or combinations of features from the different embodiments shown and described can, in themselves, represent independent inventive solutions. The problem underlying these independent inventive solutions can be derived from the description. Features from the disclosure of the device can be incorporated into the process disclosure / claims and vice versa.

[0074] All references to value ranges in this description are to be understood as encompassing any range and all sub-ranges thereof. For example, the reference 1 to 10 is to be understood as including all sub-ranges, starting with the lower limit of 1 and ending with the upper limit of 10. This means that all sub-ranges begin with a lower limit of 1 or greater and end with an upper limit of 10 or less, e.g., 1 to 1.7, or 3.206 to 8.126, or 5.5 to 10. In all representations, the spaces between values ​​are shown uniformly and disproportionately large for clarity. Due to the irregular shape of the winding elements, the spaces in reality are irregular and sometimes even non-existent, because adjacent windings of the winding elements touch each other. Reference symbol list 10 Music string 11 string core 12 Intermediate winding layer 13 Outer winding layer 14 first winding element 15 second winding element 16 third winding element 17 fourth winding element 20 spaces 21 damping agents 30 round or square cross-section 31 rectangular cross-section L Longitudinal axis

Claims

Claims 1. Musical string comprising a string core, at least one winding layer, wherein the winding layer comprises at least a first winding element which is wound in a helix around the string core, and wherein the string core is made of metal and / or plastic, and wherein spaces in the winding layer comprise a damping element, wherein the damping agent comprises at least one aromatic polymer and at least one solvent.

2. Musical string according to claim 1, wherein the at least one aromatic polymer has an aromatic compound in the main chain.

3. Musical string according to claim 1 or 2, wherein the at least one aromatic polymer is a high-performance polymer.

4. Musical string according to claim 1, wherein the at least one aromatic polymer is selected from the following polymers: polystyrene, phenolic resins (e.g., Novolac), melamine resins, polyetheretherketone (PEEK), polysulfone (PSU).

5. Musical string according to one of the preceding claims, wherein the at least one solvent has a viscosity of 0.2-200mPa.s, preferably 0.2-100mPa.s, particularly preferably 0.2-50mPa.s.

6. Musical string according to any of the preceding claims, wherein the at least one solvent is selected from the following solvents: a) aprotic polar solvents such as: N-methyl-2-pyrrolidone (NMP), dimethylformamide (DMF), γ-butyrolactone, dimethyl carbonate, diethyl carbonate, dimethylacetamide (DMAA), dimethyl sulfoxide (DMSO), propylene carbonate, ethylene carbonate, N-methylformamide, sulfolane; b) Monomers such as 1,4-butanediol, ethanediol, 1,2-propanediol, 1,3-propanediol, 1,6-hexanediol, 1,5-pentanediol, neopentyl glycol, diethylene glycol, triethylene glycol, dipropylene glycol, 3-methyl-1,5-pentanediol, glycerol, ethylenediamine, propanediamine-1,2, propanediamine-1,3, 2-methylpropanediamine-1,3 and 2,2-dethylpropanediamine-1,3, styrene, o-methylstyrene, m-methylstyrene, p-methylstyrene; and / or c) general solvents such as: acetone, acetonitrile, aniline, benzene, benzonitrile, 1-butanol, 2-butanol, tert-butyl methyl ether, chloroform, cyclohexane, 1,4-dioxane, acetic acid, ethyl acetate, ethanol, methanol, ethylene dichloride, ethylene glycol dimethyl ether, 2-propanol, 1-propanol, isoamyl alcohol, butanone, nitrobenzene, tetrachloroethene, toluene, 1,1,1-trichloroethane, 2-butanone, 1-pentanol, 2-ethyl-1-butanol, cyclohexanol, tetrahydrofurfural alcohol, 2-ethylhexanol, benzyl alcohol, ethylene glycol monoethyl ether, ethylene glycol monomethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether o-Xylene, m-xylene, p-xylene, butyl acetate, propyl acetate, hexanal, cyclohexanone, limonene, a-pinene, ß-pinene, camphene, methyl isobutyl ketone, menthol, dipropylene glycol methyl ether, trimethylbenzene, ethylbenzene, methoxypropanol, methoxypropyl acetate, butyl glycol, butyl diglycol.

7. Musical string according to one of the preceding claims, wherein the damping agent comprises a mixture of at least two different aromatic polymers.

8. Musical string according to one of the preceding claims, wherein the damping agent additionally comprises a further non-aromatic polymer.

9. Musical string according to any one of the preceding claims, wherein the damping agent further comprises solid particles with a particle size of 10 nm to 10 pm.

10. Musical string according to any one of the preceding claims, wherein the damping agent further comprises submicrometer-sized nanoscale solid particles.

11. Musical string according to one of the preceding claims, wherein the damping medium has a viscosity of 100mPa.s - 100,000.0OOmPa.s (20°C).