WO2019149900A1 - Composition de fabrication de composants de prothèse auditive - Google Patents

Composition de fabrication de composants de prothèse auditive Download PDF

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Publication number
WO2019149900A1
WO2019149900A1 PCT/EP2019/052523 EP2019052523W WO2019149900A1 WO 2019149900 A1 WO2019149900 A1 WO 2019149900A1 EP 2019052523 W EP2019052523 W EP 2019052523W WO 2019149900 A1 WO2019149900 A1 WO 2019149900A1
Authority
WO
WIPO (PCT)
Prior art keywords
composition
vol
ghz
antenna
titanate
Prior art date
Application number
PCT/EP2019/052523
Other languages
German (de)
English (en)
Inventor
Dirk Schubert
Andreas ZIEGMANN
Björn Freels
Oliver Nipp
Original Assignee
Sivantos Pte. Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sivantos Pte. Ltd. filed Critical Sivantos Pte. Ltd.
Priority to EP19703971.2A priority Critical patent/EP3746501A1/fr
Priority to CN201980011324.6A priority patent/CN111670213A/zh
Publication of WO2019149900A1 publication Critical patent/WO2019149900A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/14—Glass
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
    • H04R25/658—Manufacture of housing parts
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C08K3/041—Carbon nanotubes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/51—Aspects of antennas or their circuitry in or for hearing aids

Definitions

  • the invention relates to a composition for producing hearing device components. Furthermore, the invention relates to a hearing aid component, which is made of a corresponding composition.
  • a hearing aid is used to supply a hearing-impaired person with acoustic ambient signals, which are processed according to a compensation of the respective hearing impairment and in particular amplified.
  • a hearing aid usually comprises an input transducer, for example in the form of a microphone, a signal processing unit with an amplifier, and an output transducer.
  • the output converter is usually implemented as a miniature speaker and is also referred to as a receiver or receiver. In particular, it generates acoustic output signals which are conducted to the patient's hearing and produce the desired auditory perception in the patient.
  • BTE hearing aids behind-the-ear, also behind-the-ear or BTE
  • a housing with components such as a battery and the signal processing unit is worn behind the ear.
  • the receiver can either be used directly in the hearing system of the wearer (so-called ex-hearing aids or receiver-in-the-canal (RIC) hearing aids).
  • the receiver is arranged inside the housing itself and a flexible sound tube, also referred to as a tube, conducts the acoustic output signal.
  • Receiver signals from the housing to the ear canal tube hearing aids.
  • a housing which contains all the functional components, including the microphone and the receiver, is at least partially carried in the auditory canal.
  • Completely-in-Canal (CIC) hearing aids are similar to ITE hearing aids, but are worn fully in the ear canal.
  • Modern hearing aids are regularly equipped for wireless communication with other devices, for example with an audio device, a smartphone or (in the case of a binaural supply) with a second hearing device.
  • the wireless communication in particular the communication between the two hearing aids of a binaural hearing aid system, takes place here, for example, inductively.
  • inductively communicating hearing device to other devices without inductive transceivers, eg audio devices or smartphones, it is customary to use further devices which act as interfaces and enable signal transmission between a hearing device and, for example, an audio source.
  • further devices which act as interfaces and enable signal transmission between a hearing device and, for example, an audio source.
  • the use or the entrainment of such external Thomass kind- devices is only partially comfortable for a hearing aid wearer.
  • RF wireless technology
  • RF antennas are often used, which typically operate in a frequency range from 2.40 GHz to 2.50 GHz. Since the electromagnetic fields emitted and / or received by the RF antenna interact with the material of the hearing device components surrounding the RF antenna, the performance and characteristics of such an RF antenna also depend on the surrounding hearing device components Materials used for their production. In particular, the required size of the RF antenna and its radiation characteristic are influenced by the specific material composition or the material properties of the hearing device components surrounding the antenna. These material properties include in particular the relative Permittivity e G and the loss factor tan d of the material used in the frequency range of the RF antenna.
  • the values for the relative permittivity e G of the marketable (plastic) materials currently used for paddle components are usually in a range between 3 and 4. Although these materials make it possible to manufacture padding components easily and also meet the requirements for parameters such as stiffness and stiffness Strength or chemical resistance of the material. However, materials with a permittivity value in this range limit the radiation of an inserted RF antenna. In order to achieve the desired emission properties of the RF antenna in the frequency range from 2.40 GFIz to 2.50 GFIz, the antenna must be dimensioned comparatively large, which in turn is generally based on the dimensioning of the RF antenna or surrounding. this adjacently arranged Flöretzkomponenten and thus also on the size of the Flörilless itself.
  • WO 97/19984 A1 discloses a liquid-crystalline polymer composite material with a high permittivity (dielectric constant) which has been developed for electronic applications at high frequencies (above 500 MFIz) and which can be processed by injection molding.
  • Vectra E950 LCP is used as the liquid-crystalline material to which a filler, in particular lead zirconate titanate (PZT), strontium titanate or barium neodymium titanate, is added.
  • PZT lead zirconate titanate
  • strontium titanate or barium neodymium titanate is added.
  • Embodiments of the composite material have a dielectric constant between 12 and 20 at a frequency of 2 kFlz and a loss factor (Loss Tangent) between 0.0026 and 0.0202.
  • the invention is therefore based on the object of specifying a possibility by means of which the radiation characteristic of an RF antenna used in a flörcommunication is improved while preserving specific mechanical properties. This object is achieved by the features of claims 1 and 10.
  • Advantageous embodiments of the invention are set forth in the dependent claims and the description below.
  • the composition according to the invention comprises, for the production of hearing aid components, 60% by volume to 95% by volume of at least one thermoplastic plastic selected from a group consisting of liquid crystalline polymers (LCP), polyesters (PE), polyamides (PA) and polyphthalamides (PPA), and comprising 5% to 40% by volume of at least one filler selected from the group consisting of barium titanate, carbon nanotubes, barium strontium titanate (Ba x Sr 1-x TiO 3 ), titanium dioxide, lead zirconate titanate (PZT) and lead magnesium niobate titanate (PMNT), the composition in a frequency range between 2.0 GHz and 3.0 GHz, in particular in a frequency range between 2.4 GHz and 2.5 GHz have a loss factor tan d below 0.01 and a relative permittivity e G above 5, and in particular in a range between 5 and 10.
  • at least one thermoplastic plastic selected from a group consisting of liquid crystalline polymers (LCP), polyesters (PE), polyamides (
  • composition according to the invention By means of the composition according to the invention, a targeted increase in the relative permittivity e G of the material respectively used for producing a hearing device component is achieved with a simultaneously low loss factor tan d.
  • the relative permittivity e G of a material is defined as the ratio of its permittivity e to the permittivity eo of the vacuum and indicates the strength of the interaction of this material with electric (and therefore electromagnetic) fields.
  • the value of the relative permittivity e G depends in particular on the frequency of the electric field.
  • the loss factor tan d in turn indicates how large the dielectric losses - in the present case the radiation losses of the RF antenna due to the surrounding material - are.
  • the increase in the relative permittivity e G is achieved according to the invention by the or each filling material contained in the composition. Thanks to the increased relative permittivity e G , it is possible to use an RF system used in a hearing aid. Antenna smaller compared to currently common RF antennas. Overall, the use of a composition according to the invention makes it possible to reduce the size of an RF antenna which can be used in a hearing aid by up to 50%. This allows the use of RF antennas in very small hearing aids, such as in ITE hearing aids.
  • thermoplastic materials used in the composition according to the invention are distinguished by high strength, high chemical resistance and good processability.
  • liquid crystalline polymers LCP
  • liquid-crystalline polymers have good melt flowability, high flame retardance and dimensional stability at high temperatures, high chemical resistance and low thermal expansion, and good mechanical properties.
  • liquid-crystalline polymers used in the composition are preferably liquid-crystalline aliphatic polyesters, liquid-crystalline aromatic polyesters, liquid-crystalline aliphatic polyamides and / or liquid-crystalline aromatic polyamides. Copolymers with repeating polymer units of the aforementioned polymers or mixtures thereof are also included.
  • the composition according to the invention comprises from 80% by volume to 90% by volume of at least one thermoplastic, and from 10% by volume to 20% by volume of at least one filler.
  • this composition has a loss factor tan d below 0.01 in a frequency range between 2.0 GHz and 3.0 GHz, in particular in a frequency range between 2.4 GHz and 2.5 GHz, and a relative value Permittivity e G above 5, in particular in a range between 5 and 10 on.
  • Barium titanate (BaTiOs) particles having a maximum particle diameter of d max ⁇ 100 ⁇ m are preferably used in the composition as filling material.
  • BaTi0 3 particles with a maximum particle diameter of d max ⁇ 20 pm and in particular with a maximum particle diameter. knife of d max ⁇ 5 mhi component of the composition.
  • the average particle diameter dso is at values below 2 miti.
  • BaTiOs particles having particle sizes in the stated range can be distributed in particular homogeneously in the composition. Preference is given here to the use of BaTiOs particles having a density of 6.08 g / cm 3 .
  • the plastic More preferably, at least one glass-fiber-reinforced liquid-crystalline polymer is used as the plastic.
  • Glass-fiber-reinforced liquid-crystalline polymers have a particularly high strength and rigidity.
  • the amount of glass fibers used to strengthen the respective liquid-crystalline polymer is preferably in a range between 10% by volume and 20% by volume.
  • glass beads and / or mineral fillers are used to reinforce the or each respective plastic in the composition.
  • the composition comprises a metallic additive.
  • the metallic additive can be activated and acts as a metallization nucleus for laser direct structuring (LDS structuring) of the material.
  • LDS structuring laser direct structuring
  • metallic structures such as printed conductors can be produced on complex, three-dimensional support structures (MIDs). The laser beam writes the layout directly to the corresponding one
  • Plastic component In the context of the invention, metallic conductor tracks applied by laser direct structuring then preferably function as RF antennas.
  • a metal-based complex compound is preferably used in the composition.
  • copper-containing complex compounds in particular a copper spinel, as an additional constituent of the composition.
  • a pigment containing doped tin oxide is added to the composition. Such pigments are e.g. from where
  • the addition of the metallic additive makes the composition suitable for direct laser structuring (LDS).
  • LDS direct laser structuring
  • the plastic is superficially decomposed by laser radiation into volatile fission products and slightly removed.
  • metal nuclei in particular copper nuclei
  • the metal nuclei catalyze the subsequent wet-chemical deposition of copper, nickel and / or gold. In this way, in particular conductor tracks on plastic-based printed circuit boards can be produced simply and precisely.
  • the amount of the metallic additive used in the composition is preferably in a range between 0.1% by volume and 10
  • the composition preferably has a modulus of elasticity in a range between 5,000 and 20,000 MPa.
  • the Young's modulus describes the relationship between the elongation and the stress of the material. It has an even greater amount, the more resistance the material of the deformation has.
  • a component with a high modulus of elasticity thus has a higher rigidity than an identically constructed component with identical geometric dimensions, which has a low modulus of elasticity.
  • the composition has an elongation at break above 1.5%.
  • Elongation at break is a specific material characteristic that characterizes the plastic deformability of a material until it breaks.
  • the elongation at break is also called elongation at break.
  • the fracture stress of the composition is preferably above 60 MPa (N / mm 2 ).
  • the composition further to a melt volume rate (MVR) of at least 24 cm 3/10 min.
  • a melt volume rate of 24 cm 3/10 min was .-% BaTi0 be achieved as a filler material in the base material Vectra A115, for example, in experiments with a content of up to 20 vol.
  • Table 1 shows melt volume rate (MVR) measurements for various compositions based on the commercially available base materials "Vectra A 115" (manufacturer: Celanese), "Vectra E 840i LDS” (manufacturer: Celanese). and "Premix L 700 HF” (manufacturer: Premix), recorded. Measurements of the melt volume rate were carried out in accordance with DIN EN ISO 1133-1. The measurements on Vectra A115 were carried out at a temperature of 300 ° C and a weight of 5 kg.
  • Vectra E840iLDS The measurement on Vectra E840iLDS was carried out at a temperature of 350 ° C and 5 kg.
  • the value of Premix L700HF was calculated from the MFI (Melt Flow Index) and the density from the data sheet.
  • the melt flow index according to the data sheet was determined at 300 ° C and 5 kg.
  • the BaTiOs particles used for the measurements shown in Table 1 th HAT a maximum particle diameter of d m ax ⁇ 5 m ⁇ ti.
  • the base material "Vectra A115" is a glass fiber reinforced LCP with a glass fiber filling content of 15%.
  • the base material “Vectra E 840i LDS” it is an inherently laser-structurable LCP with 40% mineral filling.
  • the hearing aid component according to the invention comprises a base body which is produced from a composition according to the embodiments described above and to which and / or in which an RF antenna is arranged.
  • the main body according to the invention is made of a composition comprising 40 vol .-% to 95 vol .-% of at least one thermoplastic material and 5 vol .-% to 60 vol .-% of at least one filler.
  • the main body of the respective hearing aid component according to the invention is expediently used as a carrier material or as a carrier body for the RF antenna.
  • the main body can be formed in the context of the invention, for example, as a housing shell or as part of the same. Further, the main body may be formed as a faceplate or as a cover of a battery compartment of the respective hearing aid.
  • the arranged on and / or in the main body RF antenna can be mounted in the context of the invention, for example, as an electrically conductive layer on the respective base body.
  • the RF antenna is glued in the form of a metallic foil to the base body (for example, the housing shell or the faceplate of the respective hearing aid).
  • the RF antenna is received in the main body.
  • the RF antenna is poured into the material of the base body and / or sprayed around with the material.
  • electrical contacts are arranged on the main body of the respective hearing device component, which are cast in the material of the main body and / or are encapsulated with the material.
  • the base body is formed as a printed circuit board, on which the RF antenna is formed as a metallic structure.
  • the RF antenna in the form of a conductive layer is formed by metallization on the surface of the printed circuit board.
  • the circuit board is suitably as carrier material produced by injection molding (MID, Molded Interconnected Device).
  • the RF antenna is then preferably introduced into the printed circuit board by means of the LDS method.
  • the composition of which the base body is made preferably additionally comprises a metallic additive.
  • the use of alternative or additional injection-molded hearing device components or their basic body is possible within the scope of the invention.
  • the main body is preferably produced by injection molding.
  • the advantages and preferred embodiments described for the composition according to the invention apply equally to the hearing aid component according to the invention and can accordingly be transferred to them. Embodiments of the invention will be explained in more detail with reference to a drawing. Show:
  • Fig. 1 shows the main body of a printed circuit board with RF antenna
  • Fig. 2 shows the main body of a partial shell of a hearing aid with RF antenna.
  • FIG. 1 shows the injection-molded basic body 1 of an injection-molded hearing aid component 5 with an RF antenna 7 designed as a printed circuit board 3 (not yet equipped with further contacts).
  • the RF antenna 7 is formed as a metallic see structure 9 in the surface 11 of the base body 1.
  • the composition of the main body 1 of the printed circuit board 3 comprises, for example, 74% by volume of a liquid-crystalline polymer, 10% by volume of BaTiO 3 particles having a maximum particle diameter of d max ⁇ 5 ⁇ m and an average particle diameter of d 50 2 pm, and 15 vol .-% glass fibers to increase the rigidity of the body 1. Furthermore, the composition comprises 1% by volume of a copper complex, in particular a copper spinel, as a metallic additive.
  • the metallic additive allows the introduction of metallic structures such as printed conductors on complex, three-dimensional carrier materials (MIDs), preferably with structuring of the surface by means of laser radiation. Accordingly, the RF antenna 7, so the metallic structure 9 is introduced by Laserdirekt Modelltechnik (LDS) of the base body 1 in this.
  • the relative permittivity e G of the composition is 5.04.
  • the breaking stress of the composition and thus of the printed circuit board 3 is 124 MPa (N / mm 2 ).
  • the composition further has a modulus of elasticity of 12400 MPa.
  • the basic body 15 of a partial shell 17 of a hearing aid housing 19 is shown as the hearing aid component 13.
  • the partial shell 17 is injection-molded and likewise formed with a metallic structure 23 embodied as an RF antenna 21 in the surface 25 of the main body 15.
  • the composition of the main body 15 of the partial shell 17 comprises 80% by volume of a liquid-crystalline polymer, 10% by volume of BaTiO 3 particles having a maximum particle diameter of d max ⁇ 5 ⁇ m and a mean particle size
  • the composition comprises 2% by volume of a copper complex (for example a copper spinel) as a metallic additive, which permits the incorporation of the RF antenna 21 by structuring the base body 15 by means of LDS.
  • a copper complex for example a copper spinel
  • the relative permittivity e G of the composition is 8.58.
  • the breaking stress of the composition and thus of the partial shell 17 is here at 86 MPa (N / mm 2 ).
  • the elastic modulus has a value of 13467 MPa.
  • Example 1 An example of analysis (Example 1) of the composition was prepared from the base material Vectra A115 (exact name). "Vectra A115 LCP white”) with the addition of 20 vol.% BaTiOs. From the composition pressed test specimens were prepared.
  • the mechanical properties of plastics depend essentially on the preparation of the test specimens.
  • the manufacturing process influences e.g. the molecular orientation, shear in the process and in the tool, the cooling conditions and the surface condition.
  • the modulus of elasticity, elongation at break and stress at break can certainly vary several times up to an order of magnitude, depending on the production process of the test body.
  • Example 1 the above-noted compositions were prepared on a laboratory scale. Due to the small amount of material, however, the test specimens were not manufactured by injection molding. Rather, tensile test specimens (Dogbone with a length of 80 mm, width of clamping 15 mm, width measuring range of 5 mm) were pressed. On reference samples from unfilled Vectra A115 a tensile modulus of elasticity of 1800 MPa was determined, while the technical data sheet gives a value of 12000 MPa (ISO 527-2 / 1 A). In Example 1, the following mechanical properties were measured for the pressed tensile test piece:
  • Breaking stress 86 MPa (corresponds to 43% of the reference value from the data sheet)
  • Example 2 the following mechanical properties were measured for the pressed tensile test specimen: ⁇ E modulus: 1774 MPa (corresponds to 105% of the reference value of the unfilled material for the same sample preparation)
  • Breaking stress 92 MPa (corresponds to 91% of the reference value from the data sheet)

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • General Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Physics & Mathematics (AREA)
  • Otolaryngology (AREA)
  • Neurosurgery (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

La présente invention concerne une composition pour fabriquer un composant de prothèse auditive (5, 13), comprenant de 60 % vol. à 95 % vol. d'au moins une matière synthétique thermoplastique choisie dans un groupe constitué de polymères à cristaux liquides (PCL), de polyesters (PE), de polyamides (PA) et de polyphtalamides (PPA), et comprenant de 5 % vol. à 40 % vol. d'au moins une charge choisie dans un groupe constitué de titanate de baryum, de nanotubes de carbone, de titanate de baryum et de strontium (BaxSr1-xTiO3), de dioxyde de titane, de titano-zirconate de plomb (PZT) et de titano-niobiate de plomb et de magnésium (PMNT). La composition, dans une plage de fréquences comprise entre 2,0 GHz et 3,0 GHz, en particulier dans une plage de fréquences comprise entre 2,4 GHz et 2,5 GHz, présente un facteur de perte tan δ inférieur à 0,01 et une constante diélectrique εr supérieure à 5, et en particulier dans une plage comprise entre 5 et 10. L'invention concerne en outre un composant de prothèse auditive (5, 13) doté d'un corps principal (1, 15) constitué en conséquence.
PCT/EP2019/052523 2018-02-02 2019-02-01 Composition de fabrication de composants de prothèse auditive WO2019149900A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19703971.2A EP3746501A1 (fr) 2018-02-02 2019-02-01 Composition de fabrication de composants de prothèse auditive
CN201980011324.6A CN111670213A (zh) 2018-02-02 2019-02-01 用于制造助听器部件的组合物

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018201623 2018-02-02
DE102018201623.2 2018-02-02

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Publication Number Publication Date
WO2019149900A1 true WO2019149900A1 (fr) 2019-08-08

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CN (1) CN111670213A (fr)
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997019984A1 (fr) 1995-11-28 1997-06-05 Hoechst Celanese Corporation Composite de polymeres a constante elevee dielectrique constitues de cristaux liquides
US20100314581A1 (en) * 2009-06-15 2010-12-16 Ueno Fine Chemicals Industry, Ltd. Liquid-crystalline polyester blend compositions
US20130106659A1 (en) * 2011-10-31 2013-05-02 Ticona Llc Thermoplastic Composition for Use in Forming a Laser Direct Structured Substrate
WO2014162254A1 (fr) * 2013-04-01 2014-10-09 Sabic Innovative Plastics Ip B.V. Composites de structuration directe par laser à module élevé
DE102013007750A1 (de) * 2013-05-07 2014-11-13 Merck Patent Gmbh Additiv für LDS-Kunststoffe
WO2015197157A1 (fr) 2014-06-23 2015-12-30 Merck Patent Gmbh Additif pour matériaux synthétiques lds
DE102016207844A1 (de) * 2016-05-06 2017-06-08 Sivantos Pte. Ltd. Hörgerät

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009155623A (ja) * 2007-12-03 2009-07-16 Sumitomo Chemical Co Ltd 液晶ポリエステル樹脂組成物及びその成形体
EP3083832B1 (fr) * 2013-12-20 2019-05-22 Ems-Patent Ag Masse moulée en polyamide et son utilisation

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997019984A1 (fr) 1995-11-28 1997-06-05 Hoechst Celanese Corporation Composite de polymeres a constante elevee dielectrique constitues de cristaux liquides
US5962122A (en) * 1995-11-28 1999-10-05 Hoechst Celanese Corporation Liquid crystalline polymer composites having high dielectric constant
US20100314581A1 (en) * 2009-06-15 2010-12-16 Ueno Fine Chemicals Industry, Ltd. Liquid-crystalline polyester blend compositions
US20130106659A1 (en) * 2011-10-31 2013-05-02 Ticona Llc Thermoplastic Composition for Use in Forming a Laser Direct Structured Substrate
WO2014162254A1 (fr) * 2013-04-01 2014-10-09 Sabic Innovative Plastics Ip B.V. Composites de structuration directe par laser à module élevé
DE102013007750A1 (de) * 2013-05-07 2014-11-13 Merck Patent Gmbh Additiv für LDS-Kunststoffe
WO2015197157A1 (fr) 2014-06-23 2015-12-30 Merck Patent Gmbh Additif pour matériaux synthétiques lds
DE102016207844A1 (de) * 2016-05-06 2017-06-08 Sivantos Pte. Ltd. Hörgerät

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Publication number Publication date
CN111670213A (zh) 2020-09-15
EP3746501A1 (fr) 2020-12-09

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