Electromobility components

Abstract

The present invention relates to electromobility components having a color difference ΔE <20 to the L*a*b* coordinates and a color number beginning with "2" of the RAL color chart, containing polymer compositions on the basis of at least one polyamide and a colorant having an average particle size d50, determined according to ISO 13320 by way of laser diffractometry, in the range of 1 to 12 µm, containing 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1 :1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5. The invention also relates to the use of a colorant having an average particle size d50, determined according to ISO 13320 in the range of 1 to 12 µm, containing 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1 : 1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5 in polymer compositions for producing polyamide-based electromobility components having a color difference ΔE <20 to the L*a*b* coordinates and a color number beginning with "2" of the RAL color chart, in particular in order to reduce colored streaks when producing polyamide-based electromobility components.

Description

[0001] Electromobility components

[0002] The present invention relates to electromobility components with a color difference AE <20 from the L*a*b* coordinates to a color number beginning with "2" in the RAL color table, containing polymer compositions based on at least one polyamide and a colorant with an average particle size d50 to be determined by laser diffractometry according to ISO 13320 in the range from 1 to 12 pm, containing 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1:1:0.8-1.5 to 1:1.5:0.8-1.5, as well as the use of a colorant with an average particle size to be determined according to ISO 13320 d50 in the range of 1 to 12 pm containing 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in the ratio of 1 : 1 : 0.8 -1.5 to 1 : 1.5 : 0.8 - 1.5 in polymer compositions for the production of polyamide-based electromobility components with a color difference AE <20 from the L*a*b* coordinates to a color number beginning with "2" in the RAL color table, in particular for reducing color streaks in the production of polyamide-based electromobility components.

[0003] State of the art

[0004] Engineering thermoplastics such as polyamides are an important material due to their good mechanical stability, chemical resistance, excellent electrical properties, and easy processability, particularly in the field of automotive components. They have therefore been a key component in the production of sophisticated automotive components for many years. While the combustion engine was the dominant drive concept for many years, the search for alternative drive concepts has also given rise to new requirements regarding material selection. Electromobility plays a key role in this area, with key components for the electric drive of vehicles being marked in orange—so-called electromobility components within the meaning of the present invention.

[0005] US 2022 / 153962 A1 discloses a composition comprising i) 100 parts by mass of polyamide 6 and ii) 0.3 parts by mass of a colorant comprising 10,10'-oxybis-12H-phthaloperin-12-one obtainable by the synthesis route according to example 3) in EP 1 118 640 A1.

[0006] US 2022 / 153997 A1 discloses in Table 2 compositions containing i) 63.45 parts by mass of polyamide 6, ii) 0.0259 parts by mass of a colorant containing 10,10'-oxybis-12H-phthaloperin-12-one (Amaplast® Orange YXL / solvent orange 111) and iii) 33 parts by mass of glass fibers, although neither particle sizes nor an isomer ratio nor an electromobility component as such are described.

[0007] Electromobility components are known to the person skilled in the art from EP 3 947 020 B1, in which they can be, for example, distribution boxes, control units, and / or cabling, designated as (172). Electromobility components can be components that are in direct contact with live parts, as well as those that, in the immediate vicinity or spatial proximity thereto, function as contact protection, warning markings, or shielding, with components that are in direct contact with the live parts being preferred according to the invention. With regard to battery components, electromobility components according to the invention are preferably standard or round cell modules, cell housings, cell connectors, cell contact systems, module connectors, pressure compensation elements, seals, and intelligent battery management systems.With regard to proton-exchange membrane fuel cells (PEMFCs), electromobility components are preferably modules or stack modules, metallic bipolar plates, end and media modules, and sealing systems. In an electric drive unit (EDU), electromobility components can include seals and other components, in particular functionally integrated housing covers, housing seals, shaft seals, disk carriers, and stamping packages. Finally, electromobility components within the meaning of the present invention also include shielding systems and dynamic precision parts.

[0008] Due to high processing temperatures of sometimes >300°C, particularly during compounding and injection molding, the selection of suitable colorants for the orange marking of electromobility components is very limited for engineering thermoplastics such as polyamides. For example, under extreme conditions such as those encountered during polyamide processing, colorants tend to produce color streaks, especially on the surfaces of injection-molded products. Undesirable color streaks occur when the colorant is insufficiently mixed, when the colorant and the plastic being processed are incompatible, or when separation occurs due to excessive shear during injection molding. There are numerous sources of error for the occurrence of such undesirable color streaks.Examples include machine-related sources of error in the mixing screw, mixing cylinders that are too small, defective color dosing, material hoppers that are too large, or electrostatic charging of the color or colorant. Material-related sources of error can include the incompatibility of the masterbatch or colorant with the plastic being processed, insufficient solubility of the colorant in the plastic being processed, thermal sensitivity of the colorant, granules that are too large, or an excessive pigment content. Method-related sources of error can include insufficient back pressure during injection molding, excessive screw speed, melt temperature that is too high or too low, injection speed that is too high or too low, mold temperature that is too high or too low, or insufficient or excessive color dosing.Finally, mold-related defects can also contribute to the occurrence of color streaks, such as flow cross-sections that are too small, flow paths that are too long, weld lines that are too poorly positioned, or sections of the injection-molded product that are too small for injection molding. Therefore, particularly in the case of glass-fiber-reinforced electromobility components, the streak-reduced or streak-free processing of orange polyamide-based molding compounds, especially in injection molding, presents a particular challenge for the specialist.

[0009] Based on the teaching of EP 3 947 020 B1, the object of the present invention was therefore to provide electromobility components based on polyamides which, on the one hand, are characterized by the color orange, but at the same time are as free as possible from color streaks and finally show an improved (color) brilliance compared to the state of the art according to DIN EN ISO 11664-4, wherein orange polyamide-based electromobility components based on alternative dyes and / or alternative physical properties of these orange dyes are to be considered as state of the art.

[0010] Surprisingly, it has now been found that electromobility components based on polyamides and a colorant with an average particle size d50 in the range of 1 to 12 pm, determined by laser diffractometry according to ISO 13320, containing 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1 : 1 : 0.8 -1.5 to 1 : 1.5 : 0.8 - 1.5 meet the required requirements, whereby the three isomers are described by the following structural formulas:

[0011]

[0012] 9,10-Oxybis-12H-phthaloperin-12-one

[0013] 9,9'-Oxybis-12H-phthaloperin-12-one

[0014] (Color) brilliance

[0015] Color brilliance is a general term for colorants which - based on the physical term and also referred to as brilliance in the context of the present application - non-specifically describes the light effect of a body color. It is generally dependent on the color saturation, the luminance, but also on the directed light of point light sources (brilliance in wave theory), which creates gloss on shiny surfaces or transparent materials through reflection of the light source or refraction of the light. To determine the (color) brilliance according to DIN EN ISO 11664-4, samples are subjected to a coloristic measurement within the scope of the present invention. For this purpose, polyamide granules colored with 1 wt.% titanium dioxide are dried in a circulating air dryer at 120°C for 4 hours. 1 kg of the granules are mixed with 0.20 wt.-% of the respective colorant to be tested is mixed, and this mixture is extruded at a melt temperature of 280°C using a twin-screw extruder and then granulated again. The colored granules are dried at 120°C for 4 hours, and sample plates measuring 4cm x 6cm x 0.2cm are produced from the dried, colored granules on an injection molding machine at a melt temperature of 280°C, a back pressure of 10 bar, and a mold temperature of 80°C. After at least ten injection cycles, sample plates are removed for color measurement and allowed to rest at room temperature for at least 1 hour. Remission measurements are then carried out on the sample plates using a d / 8° spectrophotometer.An improvement in (color) brilliance within the meaning of the present invention exists if the AC* compared to a comparison measurement based on a preparation with the same composition of components but outside the claimed isomer ratio is > 1, because an AC* of 1 is already visible to the naked eye. The higher the (color) brilliance of a sample, the more intense the coloration is perceived.

[0016] The colorant containing the isomers 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one, and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1:1:0.8-1.5 to 1:1.5:0.8-1.5 is used with an average particle size d50 in the range of 1 to 12 pm, determined according to ISO 13320. Regarding the d50 value, its determination, and its significance, see Chemie Ingenieur Technik (72), pp. 273-276, 3 / 2000, Wiley-VCH Verlags GmbH, Weinheim, 2000. The d50 of a particle size distribution refers to the particle size corresponding to the cumulative abundance of 50%. The d50 is a typical parameter for assessing powder quality. For example, if the d50 value of a sample based on volume distribution is 5 pm, this means that the volume of particles below 5 pm accounts for 50% of the total sample volume, and the volume of particles above 5 pm also accounts for 50%.In mathematical statistics, the d50 is what is commonly referred to as the median.

[0017] Subject of the invention

[0018] The invention relates to electromobility components with a color difference AE <20 from the L*a*b* coordinates to a color number of the RAL color table beginning with "2", containing polymer compositions based on at least one polyamide and a colorant with an average particle size d50, to be determined by laser diffractometry according to ISO 13320, in the range from 1 to 12 pm, containing 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1 : 1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5, wherein in the polymer compositions 0.01 to 5 mass parts per 100 mass parts Colorants are present.

[0019] The invention preferably relates to electromobility components with a color difference AE <10 from the L*a*b* coordinates to a color number of the RAL color table beginning with "2", containing polymer compositions based on at least one polyamide and a colorant with an average particle size d50, to be determined by laser diffractometry according to ISO 13320, in the range from 1 to 12 pm, containing 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1 : 1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5, wherein in the polymer compositions, 0.01 to 5 Mass fractions of colorant are present.

[0020] The invention particularly preferably relates to electromobility components with a color difference AE <5 from the L*a*b* coordinates to a color number of the RAL color table beginning with "2", comprising polymer compositions based on at least one polyamide and a colorant with an average particle size d50, to be determined by laser diffractometry according to ISO 13320, in the range from 1 to 12 pm, containing 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1 : 1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5, wherein in the polymer compositions, 0.01 to 5 Mass fractions of colorant are present.

[0021] Preferred electromobility components are those in which, based on the polymer compositions, 0.01 to 3 parts by mass of colorant containing the isomer mixture of 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1:1:0.8-1.5 to 1:1.5:0.8-1.5 with an average particle size d50 in the range from 1 to 12 pm, to be determined by laser diffractometry according to ISO 13320, are present per 100 parts by mass of at least one polyamide.

[0022] The invention further relates to the use of a colorant containing the isomer mixture of 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1:1:0.8-1.5 to 1:1.5:0.8-1.5 with an average particle size d50, to be determined by laser diffractometry according to ISO 13320, in the range from 1 to 12 pm in polymer compositions for obtaining color-streak-reduced polyamide-based electromobility components with a color difference AE <20, preferably AE <10, in particular AE <5, from the L*a*b* coordinates to a color number beginning with "2" of the RAL color table, wherein in the polymer compositions, 0.01 to 5 parts by mass of colorant are present per 100 parts by mass of at least one polyamide.

[0023] Reduced color streaks in the sense of the present invention means a reduction of superficially visible color streaks on samples after injection molding by at least 10% compared to a colorant based on 10,10'-oxybis-12H-phthaloperin-12-one obtainable according to Example 3 in EP 1 118 640 A1.

[0024] The invention preferably relates to the use of a colorant containing the isomer mixture of 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1:1:0.8-1.5 to 1:1.5:0.8-1.5 with an average particle size d50 to be determined by laser diffractometry according to ISO 13320 in the range from 1 to 12 pm in polymer compositions for obtaining color streak-reduced at least polyamide-based electromobility components with a color difference AE <20, preferably AE <10, in particular AE <5, from the L*a*b* coordinates to a color number beginning with "2" of the RAL color table and a (colour) brilliance to be determined according to DIN EN ISO 11664-4 with an AC* > 1 to a corresponding reference sample, the isomer ratio of which is not in the range of 1 : 1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5, where in the polymer compositions per 100 parts by mass of polyamide 0,01 to 5 parts by mass of colorant are present. The AC* ultimately determines the AE of otherwise color-matched samples of comparable brightness. An AE of 1 is already visible to the naked eye. Accordingly, an AC* of 1 can already be visible to the naked eye in samples of similar color and comparable brightness.

[0025] The invention particularly preferably relates to the use of a colorant containing the isomer mixture of 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1:1:0.8-1.5 to 1:1.5:0.8-1.5 with an average particle size d50 to be determined by laser diffractometry according to ISO 13320 in the range from 1 to 12 pm in polymer compositions for obtaining color streak-free at least polyamide-based electromobility components with a color difference AE <20, preferably AE <10, in particular AE <5, from the L*a*b* coordinates to a color number beginning with "2" of the RAL color table and a (colour) brilliance to be determined according to DIN EN ISO 11664-4 with an AC* > 1 to a corresponding reference sample whose isomer ratio is not in the range of 1 : 1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5, where, based on the polymer compositions, 100 parts by mass of polyamide 0.01 to 5 parts by mass of colorant are present.,

[0026] Free of color streaks in the sense of the present invention means a reduction of superficially visible color streaks on polyamide-based samples after injection molding by at least 50%, for example, compared to a colorant based on 10,10'-oxybis-12H-phthaloperin-12-one obtainable according to Example 3 in EP 1 118 640 A1.

[0027] The invention very particularly preferably relates to the use of a colorant comprising the isomer mixture of 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1 : 1 : 0.8 -1.5 to 1 : 1.5 : 0.8 -1.5 with an average particle size d50 to be determined by laser diffractometry according to ISO 13320 in the range from 1 to 12 pm in polymer compositions for obtaining color streak-free at least polyamide-based electromobility components with a color difference AE <20, preferably AE <10, in particular AE <5, from the L*a*b* coordinates to a color number beginning with "2" of the RAL colour table and a (colour) brilliance to be determined according to DIN EN ISO 11664-4 with an AC* > 1 to a corresponding reference sample, the isomer ratio of which is not in the range of 1 : 1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5, whereby in the polymer compositions per 100 parts by mass of polyamide 0.01 to 5 parts by mass of colorant are present.,

[0028] Preferably, in the uses according to the invention, 0.01 to 3 parts by mass of colorant containing the isomer mixture of 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1:1:0.8-1.5 to 1:1.5:0.8-1.5 with an average particle size d50 in the range from 1 to 12 pm, to be determined by laser diffractometry according to ISO 13320, are present per 100 parts by mass of at least one polyamide.

[0029] The preparation of polymer compositions for producing electromobility components according to the invention is carried out by means of compounding and subsequent processing by injection molding, extrusion, or blow molding by mixing the at least one polyamide to be used as starting material with the colorant containing the isomer mixture 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1:1:0.8-1.5 to 1:1.5:0.8-1.5 with an average particle size d50 to be determined by laser diffractometry according to ISO 13320 in the range from 1 to 12 pm in at least one mixing tool in the ratio specified above. This results in molding compounds that either consist exclusively of these two components or that contain at least one further component in addition to these two components.The electromobility components according to the invention are therefore preferably injection-molded, extruded or blow-molded products, in particular injection-molded products.

[0030] For the avoidance of doubt, the scope of the present invention encompasses all definitions and parameters listed below, either general or in preferred ranges, in any combination. This also applies to the combination of the quantities specified for the individual components in relation to the claimed processes and uses. The standards cited in this application refer to the version applicable on the filing date of this invention. Unless otherwise stated, percentages are by weight.Electromobility components according to the invention for electromobility are colored orange by the colorant containing the isomer mixture 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1 : 1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5 with an average particle size d50 in the range of 1 to 12 pm to be determined by laser diffractometry according to ISO 13320, wherein color shades which in the RAL color system of the color number RAL2001, RAL2003, RAL2004, RAL2007, RAL2008, RAL2009, RAL2010 and RAL2011 are particularly preferred and the colours corresponding to the colour number RAL2003, RAL2008, RAL 2010 and RAL2011 in the RAL colour system are very particularly preferred.

[0031] Permissible "similar colors" according to the invention and encompassed by the present invention are those whose color difference in the L*a*b* system has an AE of <20, preferably an AE <10, particularly preferably AE <5, to a color number beginning with "2" in the RAL color table. For an explanation of the AE defined in EN ISO 11664-4, see, for example, https: / / de.wikipedia.org / wiki / Delta_E.

[0032] Orange

[0033] For the purposes of the present invention, orange is defined as a color that has a color number beginning with "2" in the RAL color table according to https: / / de.wikipedia.org / wiki / RAL-Farbe#Orange. Specifically, as of the filing date of the present invention, orange shades are distinguished according to Table 1:

[0034] Table 1

[0035] L* a* b*

[0036] RAL 2000 yellow orange 58.20 37.30 68.68

[0037] RAL 2001 red-orange 49.41 39.79 35.29

[0038] RAL 2002 blood orange 47.74 47.87 33.73

[0039] RAL 2003 pastel orange 66.02 41.22 52.36

[0040] RAL 2004 pure orange 56.89 50.34 49.81

[0041] RAL 2005 Bright Orange 72.27 87.78 82.31

[0042] RAL 2007 Bright Orange 76.86 47.87 97.63

[0043] RAL 2008 light red orange 60.33 46.91 60.52

[0044] RAL 2009 Traffic Orange 55.83 47.79 48.83

[0045] RAL 2010 signal orange 55.39 40.10 42.42

[0046] RAL 2011 deep orange 59.24 40.86 64.50

[0047] RAL 2012 salmon orange 57.75 40.28 30.66

[0048] RAL 2013 Pearl Orange 40.73 32.14 34.92 Table 1 shows the device-independent CIE L*a*b* color values ​​for the respective RAL value: L* stands for the luminance, a* describes the color location with respect to the red-green axis and b* describes the color location with respect to the yellow-blue axis using D65 standard illuminant with a 10° field of view of a standard observer. The color model is standardized in EN ISO 11664-4 "Colorimetry -- Part 4: CIE 1976 L*a*b* Color space". For information on the L*a*b* color space (also: CIELAB) see: https: / / de.wikipedia.org / wiki / Lab-Farbraum. Each color in the color space is defined by a color location with the Cartesian coordinates {L*, a*, b*}. The a*b* coordinate plane was constructed using complementary color theory. Green and red are opposite each other on the a* axis, and the b* axis runs between blue and yellow. Complementary hues are 180° opposite each other, and all achromatic colors lie at its center (the coordinate origin a*=0, b*=0).

[0049] The L* axis describes the brightness (luminance) of the color with values ​​from 0 to 100. In the illustration, this is perpendicular to the a*b* plane at the zero point. It can also be called the neutral gray axis because all achromatic colors (shades of gray) are contained between the endpoints black (L*=0) and white (L*=100). The a* axis describes the green or red component of a color, with negative values ​​representing green and positive values ​​representing red. The b* axis describes the blue or yellow component of a color, with negative values ​​representing blue and positive values ​​representing yellow. The a* values ​​range from approximately -170 to +100, and the b* values ​​from -100 to +150, with maximum values ​​only being reached at medium brightness of certain colors. The CIELAB color solid has its greatest extent in the medium brightness range, but this height and size varies depending on the color range.

[0050] Further preferred embodiments of the invention

[0051] In a preferred embodiment, the invention relates to electromobility components with a color difference AE <20 from the L*a*b* coordinates to a color number beginning with "2" in the RAL color table based on polymer compositions containing, in addition to the at least one polyamide and the isomer mixture of 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one to be used as colorant in a ratio of 1 : 1 : 0.8 -1.5 to 1 : 1.5 : 0.8 -1.5, at least one filler and / or reinforcing material, preferably in a proportion of 1 to 150 parts by mass, particularly preferably in a proportion of 5 to 80 parts by mass, very particularly preferably in a proportion of 10 to 50 parts by mass, in each case based on 100 parts by mass of polyamide.In a further preferred embodiment, the invention relates to electromobility components with a color difference AE <20 from the L*a*b* coordinates to a color number beginning with "2" of the RA L color table based on polymer compositions containing, in addition to the at least one polyamide and the isomer mixture of 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one to be used as colorant in a ratio of 1 : 1 : 0.8 -1.5 to 1 : 1.5 : 0.8 -1.5, at least one flame retardant, preferably in an amount of 3 to 100 parts by mass, particularly preferably in an amount of 5 to 80 parts by mass, very particularly preferably in an amount of 10 to 50 parts by mass, in each case based on 100 parts by mass of polyamide.

[0052] In a further preferred embodiment, the invention relates to electromobility components with a color difference AE <20 from the L*a*b* coordinates to a color number beginning with "2" of the RA L color table based on polymer compositions containing, in addition to the at least one polyamide and the isomer mixture of 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one to be used as colorant in a ratio of 1 : 1 : 0.8 -1.5 to 1 : 1.5 : 0.8 -1.5, at least one additive, preferably 0.01 to 80 parts by mass, particularly preferably 0.05 to 50 parts by mass, very particularly preferably 0.1 to 30 parts by mass, each based on 100 parts by mass of polyamide.

[0053] Polyamide

[0054] Polyamides to be used according to the invention can be produced by various processes and synthesized from different building blocks. A variety of processes have become known for the production of polyamides. Depending on the desired end product, different monomer building blocks, different chain regulators to achieve a desired molecular weight, or even monomers with reactive groups for subsequent post-treatment can be used.

[0055] The technically relevant processes for producing polyamides usually involve melt polycondensation. In this context, the hydrolytic polymerization of lactams is also considered a polycondensation.

[0056] Polyamides within the meaning of the present invention also include polyarylamides (PARA), such as those available from Solvay Specialty Polymers as IXEF® 1022 with 50% glass fiber reinforcement or as IXEF® 2057 with mineral reinforcement. Suitable starting materials are aliphatic and / or aromatic dicarboxylic acids such as adipic acid, 2,2,4- and 2,4,4-trimethyladipic acid, azelaic acid, sebacic acid, isophthalic acid, terephthalic acid, and aliphatic and / or aromatic diamines such as ethylenediamine diamine (ethylenediamine diamine). Examples of suitable monomers include tetramethylenediamine, hexamethylenediamine, 1,9-nonanediamine, 2,2,4- and 2,4,4-trimethylhexamethylenediamine, the isomeric diaminodicyclohexylmethanes, diaminodicyclohexylpropanes, bisaminomethylcyclohexane, phenylenediamines, xylylenediamines, aminocarboxylic acids such as aminocaproic acid, and the corresponding lactams. Caprolactams, especially s-caprolactam, are particularly preferred. Copolyamides composed of several of the above-mentioned monomers are also included.

[0057] Preferred polyamides are semi-crystalline polyamides which can be produced from diamines and dicarboxylic acids and / or lactams with at least 5 ring members or corresponding amino acids.

[0058] Particularly preferred polyamides are polyamide 6, polyamide 66, polyamide 46, and / or partially aromatic copolyamides. Preferred partially aromatic copolyamides are PA6T / 6, PA6T / 66, PA6T / 6I, or PA6T / 6I / 66.

[0059] Polyamides which are particularly preferred according to the invention are polyamide 6 (PA6) [CAS No. 25038-54-4] and polyamide 66 (PA66) [CAS No. 25038-54-4], with polyamide 6 being particularly preferred.

[0060] The designation of the polyamides used in this application complies with the international standard ISO 1874-1, where the first digit(s) indicate the number of carbon atoms of the starting diamine and the last digit(s) indicate the number of carbon atoms of the dicarboxylic acid. If only one number is given, as in the case of PA6, this means that the starting material is an α,ω-aminocarboxylic acid or the lactam derived from it, in the case of PA6, ε-caprolactam.

[0061] The PA6 [CAS No. 25038-54-4] preferably used according to the invention has a viscosity number, determined according to ISO 307 in a 0.5 wt.% solution in 96 wt.% sulfuric acid at 25°C, in the range of 80 to 180 ml / g, particularly preferably in the range of 85 to 160 ml / g, and most preferably in the range of 90 to 140 ml / g. Polyamide 6 to be used according to the invention is available, for example, as Durethan® B26 from Lanxess Deutschland GmbH, Cologne.

[0062] The polyamide 66 [CAS No. 32131-17-2] preferably used according to the invention preferably has a viscosity number, determined according to ISO 307 in a 0.5 wt. % solution in 96 wt. % sulfuric acid at 25°C, in the range of 80 to 180 ml / g, very particularly preferably a viscosity number in the range of 85 to 160 ml / g, especially preferably in the range of 90 to 140 ml / g. Polyamide 66 to be used according to the invention is available, for example, as Ultramid® A24E01 from BASF SE, Ludwigshafen.

[0063] The polyamide to be used in the polymer compositions according to the invention can also be used in a mixture with at least one other polyamide and / or at least one other polymer. Preferred other polymers are selected from the group consisting of polyethylene, polypropylene, and acrylonitrile-butadiene-styrene copolymer (ABS). If at least one other polyamide or at least one other polymer is used, this is preferably or optionally done with the use of at least one compatibilizer.

[0064] Conventional additives, preferably mold release agents, stabilizers and / or flow aids known to the person skilled in the art, can be added to the polyamide to be used in the polymer compositions according to the invention while still in the melt.

[0065] Colorants

[0066] According to the invention, an isomer mixture of 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10-oxybis-12H-phthaloperin-12-one in a ratio of 1:1:0.8-1.5 to 1:1.5:0.8-1.5 with an average particle size d50 in the range from 1 to 12 pm, to be determined by laser diffractometry according to ISO 13320, is used as the orange dye or colorant. In contrast to the process according to Example 3 in EP 1 118 640 A1, this isomer mixture is obtainable by melting 300 g of phenol at 60°C and adding 45 g (285 mmol) of 1,8-diaminonaphthalene and 3.1 g of 2,6-lutidine (28.5 mmol) to it, and stirring the mixture for 30 minutes. Subsequently, 45 g (145 mmol) of 4,4-oxydiphthalic anhydride are added, and the reaction mixture is stirred for a further 30 minutes. The reaction mixture is then heated to 175°C and maintained at this temperature for 10 hours, during which time the resulting water of reaction is distilled off.295 g of methanol are then added to the reaction mixture at a temperature of 175°C, and the temperature of the reaction mixture is cooled to 30°C within one hour. The reaction product is isolated on a suction filter and then stirred in 300 g of phenol at 175°C for 45 minutes. 295 g of methanol are then added at a temperature of 175°C, and the temperature of the reaction mixture is cooled to 30°C within three hours. The reaction product is isolated on a suction filter and washed first with 440 g of methanol, then with 800 g of water, and dried in a vacuum drying cabinet at 80°C and 150 mbar. The isomer distribution and the average particle size d50 of the dye, which is present as an isomer mixture, are determined.

[0067] The present invention therefore also relates to the isomer mixture comprising 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1:1:0.8-1.5 to 1:1.5:0.8-1.5, preferably with a particle size d50 in the range from 1 to 12 pm, to be determined by laser diffractometry according to ISO 13320.

[0068] The isomer mixture to be used as a colorant can be used directly as a powder, or in the form of a masterbatch, in the form of a compact or in the form of a concentrate, with masterbatches being preferred and masterbatches in a polyamide matrix being particularly preferred.

[0069] Additional components

[0070] In a preferred embodiment, at least one filler or reinforcing material is used in the polymer compositions in addition to the polyamide and the colorant. Mixtures of two or more different fillers and / or reinforcing materials can also be used.

[0071] Preferably, at least one filler or reinforcing material from the group consisting of carbon fibers [CAS No. 7440-44-0], glass beads or solid or hollow glass beads, or glass fibers, or ground glass, amorphous quartz glass, aluminum borosilicate glass with an alkali content of 1% (E-glass) [CAS No. 65997-17-3], amorphous silica [CAS No. 7631-86-9], quartz powder [CAS No. 14808-60-7], calcium silicate [CAS No. 1344-95-2], calcium metasilicate [CAS No. 10101-39-0], magnesium carbonate [CAS No. 546-93-0], kaolin [CAS No. 1332-58-7], calcined kaolin [CAS No. 92704-41-1], chalk [CAS No. 1317-65-3], kyanite [CAS No. 1302-76-7], powdered or ground quartz [CAS No. 14808-60-7], mica [CAS No. 1318-94-1], phlogopite [CAS No. 12251-00-2], barium sulfate [CAS No. 7727-43-7], feldspar [CAS No. 68476-25-5], wollastonite [CAS No. 13983-17-0], montmorillonite [CAS No. 67479-91-8], pseudoboehmite of the formula AlO(OH), magnesium carbonate [CAS No. 12125-28-9] and talc [CAS No. 14807-96-6] is used.

[0072] Among the fibrous fillers or reinforcing materials, glass fibers and wollastonite are particularly preferred, with glass fibers being most preferred. With regard to glass fibers, the expert distinguishes between chopped fibers, also known as short fibers, with a length in the range of 0.1 to 1 mm, long fibers with a length in the range of 1 to 50 mm, and continuous fibers with a length L > 50 mm. Short fibers are preferably used in injection molding technology and can be processed directly with an extruder. Long fibers can also be processed in extruders. They are used extensively in fiber injection molding. Long fibers are often added to thermosets as fillers. Continuous fibers are used as rovings or fabrics in fiber-reinforced plastics. Products with continuous fibers achieve the highest stiffness and strength values.Furthermore, milled glass fibers are offered, the length of which after milling is typically in the range of 70 to 200 pm.

[0073] Glass fibers preferably used as fillers or reinforcing materials according to the invention are chopped long glass fibers with an average initial length, determined by laser diffraction particle size analysis (laser granulometric measurement or laser diffractometry) according to ISO 13320, in the range of 1 to 50 mm, particularly preferably in the range of 1 to 10 mm, and very particularly preferably in the range of 2 to 7 mm. For information on laser diffraction particle size determination / laser diffractometry according to ISO 13320, see: https: / / de.wikipedia.org / wiki / Laserbeugungs-Partikelgr%C3%B6%C3%9Fenanalyse

[0074] Due to processing into the molding compound (compounding) or the product, particularly in the injection molding process, the glass fibers in the molding compound or product may have a smaller d90 or d50 value than the glass fibers originally used. Thus, the arithmetic mean of the glass fiber length after processing is often only in the range of 150 pm to 300 pm, which is why the length, width, and diameter specifications for fillers and reinforcing materials, especially glass fibers, given in this description refer to the state before any processing, especially before compounding or before processing, especially in injection molding.

[0075] Preferred glass fibers to be used as filler or reinforcing material have an average fiber diameter determined by laser diffractometry according to ISO 13320 in the range from 7 to 18 pm, particularly preferably in the range from 9 to 15 pm.

[0076] In a preferred embodiment, the glass fibers preferably used as fillers or reinforcing materials are treated with a suitable sizing system or adhesion promoter. A silane-based sizing system or adhesion promoter is preferably used.

[0077] Flame retardants

[0078] In a preferred embodiment, at least one flame retardant is used in the polymer compositions in addition to the polyamide and the colorant. Preferred flame retardants are mineral flame retardants, nitrogen-containing

[0079] Flame retardants or phosphorus-containing flame retardants.

[0080] Among mineral flame retardants, magnesium hydroxide is particularly preferred. Magnesium hydroxide [CAS No. 1309-42-8] can be contaminated due to its origin and method of production. Typical impurities include silicon-, iron-, calcium-, and / or aluminum-containing species, which can be embedded, for example, in the form of oxides in the magnesium hydroxide crystals. The magnesium hydroxide used as a mineral flame retardant can be uncoated or coated. Preferably, the magnesium hydroxide used as a mineral flame retardant is coated with coatings based on stearates or aminosiloxanes, particularly preferably with aminosiloxanes.Magnesium hydroxide preferably used as a mineral flame retardant has an average particle size d50, determined by laser diffractometry according to ISO 13320, in the range from 0.5 pm to 6 pm, with a d50 in the range from 0.7 pm to 3.8 pm being preferred and a d50 in the range from 1.0 pm to 2.6 pm being particularly preferred.

[0081] Magnesium hydroxide types suitable as mineral flame retardants according to the invention are, for example, Magnifin® H5IV from Martinswerk GmbH, Bergheim, Germany or Hidromag® Q2015 TC from Penoles, Mexico City, Mexico.

[0082] Preferred nitrogen-containing flame retardants are the reaction products of trichlorotriazine, piperazine, and morpholine according to CAS No. 1078142-02-5, in particular MCA PPM Triazine HF from MCA Technologies GmbH, Biel-Benken, Switzerland, as well as melamine cyanurate and condensation products of melamine, in particular Meiern, Melam, Melon, and higher-condensed compounds of this type. Preferred inorganic nitrogen-containing compounds are ammonium salts.

[0083] Furthermore, salts of aliphatic and aromatic sulfonic acids and mineral flame retardant additives, in particular aluminum hydroxide or Ca-Mg carbonate hydrates (DE-A 4 236 122) can also be used.

[0084] In an alternative embodiment, zinc-containing compounds can also be used. These preferably include zinc oxide, zinc borate, zinc stannate, zinc hydroxystannate, zinc sulfide, and zinc nitride, or mixtures thereof.

[0085] Preferred phosphorus-containing flame retardants are organic metal phosphinates, aluminum salts of phosphonic acid, red phosphorus, inorganic metal hypophosphites, metal phosphonates, derivatives of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxides (DOPO derivatives), resorcinol bis(diphenyl phosphate) (RDP) including oligomers, bisphenol A bisdiphenyl phosphate (BDP) including oligomers, melamine pyrophosphate, melamine polyphosphate, melamine poly(aluminum phosphate), melamine poly(zinc phosphate) or phenoxyphosphazene oligomers and mixtures thereof.

[0086] A preferred organic metal phosphinate is aluminum tris(diethylphosphinate). A preferred inorganic metal hypophosphite is aluminum hypophosphite.

[0087] Other flame retardants to be used are carbon formers, particularly preferably phenol-formaldehyde resins, polycarbonates, polyimides, polysulfones, polyethersulfones or polyether ketones as well as anti-drip agents, in particular tetrafluoroethylene polymers.

[0088] Halogen-containing flame retardants can also be used. Preferred halogen-containing flame retardants are commercially available organic halogen compounds, particularly preferably ethylene-1,2-bistetrabromophthalimide, decabromodiphenylethane, tetrabromobisphenol A epoxy oligomer, tetrabromobisphenol A oligocarbonate, tetrachlorobisphenol A oligocarbonate, polypentabromobenzyl acrylate, brominated polystyrene, or brominated polyphenylene ethers, which can be used alone or in combination with synergists, in particular antimony trioxide or antimony pentoxide. Brominated polystyrene is particularly preferred among the halogen-containing flame retardants. Brominated polystyrene is preferably used in amounts in the range of 10 to 30% by weight, particularly preferably in amounts in the range of 15 to 25% by weight, in each case based on the total composition, wherein at least one of the other components is reduced to such an extent that the sum of all percentages by weight always amounts to 100.

[0089] Brominated polystyrene is commercially available in various product grades. Examples include Firemaster® PBS64 from Lanxess, Cologne, Germany, and Saytex® HP-3010 from Albemarle, Baton Rouge, USA.

[0090] Additive

[0091] In a preferred embodiment, at least one additive is used in the polymer compositions in addition to the polyamide and the colorant. Preferred additives are antioxidants, thermal stabilizers, UV stabilizers, gamma-ray stabilizers, components for reducing water absorption or hydrolysis stabilizers, antistatic agents, emulsifiers, nucleating agents, plasticizers, processing aids, impact modifiers, lubricants and / or mold release agents, components for reducing water absorption, flow aids or elastomer modifiers, chain-extending additives, and colorants other than 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one, and 10,10'-oxybis-12H-phthaloperin-12-one. The additives can be used alone or in mixtures or in the form of masterbatches.

[0092] Preferred thermal stabilizers as additives are sterically hindered phenols, especially those containing at least one 2,6-di-tert-butylphenyl group and / or 2-tert-butyl-6-methylphenyl group, as well as phosphites, hypophosphites, especially sodium hypophosphite NaH2PO2, hydroquinones, aromatic secondary amines, substituted resorcinols, salicylates, benzotriazoles and benzophenones, 3,3'-thiodipropionic acid esters, and variously substituted representatives of these groups, or mixtures thereof. The thermal stabilizers to be used as additives are preferably used in amounts of 0.01 to 2 parts by mass, particularly preferably 0.05 to 1 part by mass, each based on 100 parts by mass of polyamide.

[0093] UV stabilizers used as additives are preferably substituted resorcinols, salicylates, benzotriazoles, and benzophenones, HALS derivatives (“hindered amine light stabilizers”) containing at least one 2,2,6,6-tetramethyl-4-piperidyl unit, or benzophenones. The UV stabilizers used as additives are preferably used in amounts of 0.01 to 2 parts by mass, particularly preferably 0.1 to 1 part by mass, based in each case on 100 parts by mass of polyamide.

[0094] Colorants to be used as additives and different from 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one are preferred, inorganic pigments, in particular ultramarine blue, bismuth vanadate, iron oxide, titanium dioxide, zinc sulfide, tin-titanium-zinc oxides [CAS No. 923954-49-8], furthermore organic colorants, preferably phthalocyanines, quinacridones, benzimidazoles, in particular Ni-2-hydroxy-naphthyl-benzimidazole [CAS No. 42844-93-9] and / or pyrimidine-azo-benzimidazole [CAS No. 72102-84-2] and / or Pigment Yellow 192 [CAS No. 56279-27-7], as well as perylenes, anthraquinones, 1,3-dihydro-5,6-bis(((2-hydroxy-1-naphthyl)methylene)amino-2H-benzimidazol-2-onato(2-)-N5,N6,O5,O6)nickel, in particular Cl Solvent Yellow 163 [CAS No. 13676-91-0], although this list is not exhaustive. In one embodiment, carbon black or nigrosine are also used as colorants.

[0095] Nucleating agents to be used as additives are preferably sodium or calcium phenylphosphinate, aluminum oxide or silicon dioxide and, most preferably, talc, although this list is not exhaustive.

[0096] Preferred plasticizers to be used as additives are dioctyl phthalate, dibenzyl phthalate, butylbenzyl phthalate, hydrocarbon oils or N-(n-butyl)benzenesulfonamide. Preferred elastomer modifiers to be used as additives include, among others, one or more graft polymers of

[0097] E.1 5 to 95% by weight, preferably 30 to 90% by weight, of at least one vinyl monomer and

[0098] E.2 95 to 5 wt.%, preferably 70 to 10 wt.% of one or more

[0099] Graft bases with glass transition temperatures <10°C, preferably <0°C, particularly preferably <-20°C, where the weight percentages are based on 100% by weight of elastomer modifier. The graft base E.2 generally has an average particle size (d50 value), determined by laser diffraction according to ISO 13320, of 0.05 to 10 pm, preferably 0.1 to 5 pm, particularly preferably 0.2 to 1 pm.

[0100] Monomers for E.1 are preferably mixtures of

[0101] E.1.1 50 to 99 wt.% vinylaromatics and / or nucleus-substituted vinylaromatics, in particular styrene, a-methylstyrene, p-methylstyrene, p-chlorostyrene, and / or methacrylic acid (Ci-C8) alkyl esters, in particular methyl methacrylate, ethyl methacrylate) and

[0102] E.1.2 1 to 50 wt.% vinyl cyanides, in particular unsaturated nitriles such as acrylonitrile and methacrylonitrile, and / or (meth)acrylic acid (Ci-C8) alkyl esters, in particular

[0103] Methyl methacrylate, glycidyl methacrylate, n-butyl acrylate, t-butyl acrylate, and / or derivatives, in particular anhydrides and imides of unsaturated carboxylic acids, in particular maleic anhydride or N-phenyl maleimide, wherein the weight percentages refer to 100 wt.% elastomer modifier.

[0104] Preferred monomers E.1.1 are selected from at least one of the monomers styrene, α-methylstyrene, and methyl methacrylate. Preferred monomers E.1.2 are selected from at least one of the monomers acrylonitrile, maleic anhydride, glycidyl methacrylate, and methyl methacrylate. Particularly preferred monomers E.1.1 are styrene and E.1.2 are acrylonitrile.

[0105] Suitable graft bases E.2 for the graft polymers used in the elastomer modifiers include, for example, diene rubbers, EPDM rubbers, i.e., those based on ethylene / propylene and optionally diene, and also acrylate, polyurethane, silicone, chloroprene, and ethylene / vinyl acetate rubbers. EPDM stands for ethylene-propylene-diene rubber. Preferred graft bases E.2 are diene rubbers, in particular based on butadiene, isoprene, etc., or mixtures of diene rubbers or copolymers of diene rubbers or mixtures thereof with other copolymerizable monomers, in particular according to E.1.1 and E.1.2, with the proviso that the glass transition temperature of component E.2 is <10°C, preferably <0°C, particularly preferably <-10°C.

[0106] Lubricants and / or mold release agents to be used as additives are preferably long-chain fatty acids, especially stearic acid or behenic acid, their salts, especially Ca or Zn stearate, and their ester derivatives, especially those based on pentaerythritol, especially fatty acid esters of pentaerythritol or amide derivatives, especially ethylenebisstearylamide, montan waxes, and low-molecular-weight polyethylene or polypropylene waxes. Montan waxes within the meaning of the present invention are mixtures of straight-chain, saturated carboxylic acids with chain lengths of 28 to 32 carbon atoms.

[0107] Glass fiber reinforced electromobility components

[0108] The invention preferably relates to electromobility components based on polymer compositions in which, in addition to the polyamide and the colorant, glass fibers are used as filler or reinforcing material, preferably chopped long glass fibers with an average initial length in the range of 1 to 50 mm, to be determined by means of laser diffraction particle size analysis (laser granulometric measurement or laser diffractometry) according to ISO 13320.

[0109] In a preferred embodiment, the present invention relates to electromobility components based on polymer compositions in which, in addition to the polyamide and the colorant, cut long glass fibers with an average initial length in the range of 1 to 10 mm, very particularly preferably in the range of 2 to 7 mm, to be determined by means of laser diffraction particle size analysis (laser granulometric measurement or laser diffractometry) according to ISO 13320, are used as filler or reinforcing material.

[0110] Preferably, 1 to 150 parts by mass, preferably 5 to 80 parts by mass, particularly preferably 10 to 50 parts by mass of glass fibers are used in the polymer compositions per 100 parts by mass of polyamide.

[0111] Preferably, the glass fibers to be used as filler or reinforcing material have an average fiber diameter determined by laser diffractometry according to ISO 13320 in the range from 7 to 18 pm, particularly preferably in the range from 9 to 15 pm.The invention particularly preferably relates to electromobility components with a color difference AE <20 from the L*a*b* coordinates to a color number beginning with "2" in the RAL color table based on polymer compositions containing at least one polyamide and a colorant with an average particle size d50 to be determined by laser diffractometry according to ISO 13320 in the range from 1 to 12 pm containing the isomer mixture of 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1 : 1 : 0.8 -1.5 to 1 : 1.5 : 0.8 -1.5 as well as glass fibers, preferably chopped long glass fibers with a particle size analysis by means of laser diffraction (laser granulometric measurement or laser diffractometry) according to ISO 13320 in the range of 1 to 50 mm, particularly preferably in the range of 1 to 10 mm, most preferably in the range of 2 to 7 mm.Preferably, at least polyamide 6 or polyamide 66 is used as the polyamide, in particular polyamide 6.

[0112] Most preferably, the starting materials in the polymer compositions are present in a ratio of 100 parts by mass of at least one polyamide, preferably at least polyamide 6 or polyamide 66, in particular polyamide 6, 0.01 to 5 parts by mass of colorant and 1 to 150 parts by mass, preferably 5 to 80 parts by mass, particularly preferably 10 to 50 parts by mass of glass fibers.

[0113] Proceedings

[0114] The invention also relates to a method for producing electromobility components with a color difference AE <20 from the L*a*b* coordinates to a color number beginning with "2" in the RAL color table, by mixing at least one polyamide and one colorant to form polymer compositions, extruding them into strands, cooling them until they are granulatable, drying them and granulating them, and then further processing the polymer compositions by injection molding, including the special processes gas injection technology (GIT), water injection technology (WIT) or projectile injection technology (PIT), in extrusion processes, including profile extrusion, or by blow molding, wherein

[0115] A) per 100 parts by mass of at least one polyamide, preferably polyamide 6 or polyamide 66,

[0116] B) 0.01 to 5 parts by mass of colorant containing the isomers 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1 : 1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5 with an average particle size d50 in the range from 1 to 12 pm, to be determined by laser diffractometry according to ISO 13320.

[0117] Preferably, for the method according to the invention, the electromobility components also have a color distance AE <10 from the L*a*b* coordinates to a color number beginning with "2" in the RAL color table, particularly preferably AE <5.

[0118] Polyamide 6 is particularly preferred as polyamide.

[0119] The invention most preferably relates to a process in which, in addition to components A) and B), C) glass fibers having an average initial length in the range from 1 to 50 mm, particularly preferably in the range from 1 to 10 mm, very particularly preferably in the range from 2 to 7 mm, to be determined by means of laser diffraction particle size analysis (laser granulometric measurement or laser diffractometry) according to ISO 13320 are used.

[0120] Preferably, in the process according to the invention, 1 to 150 parts by mass, particularly preferably 5 to 80 parts by mass, very particularly preferably 10 to 50 parts by mass of glass fibers are used per 100 parts by mass of polyamide.

[0121] The invention particularly preferably relates to a process for producing electromobility components with a color difference AE <20 from the L*a*b* coordinates to a color number beginning with "2" in the RAL color table, by mixing at least one polyamide and one colorant to form polymer compositions, extruding them into strands, cooling them until they are granulatable, drying them and granulating them, and then further processing the polymer compositions by injection molding, including the special processes gas injection technology (GIT), water injection technology (WIT) or projectile injection technology (PIT), in extrusion processes, including profile extrusion, or by blow molding, wherein

[0122] A) per 100 parts by mass of at least one polyamide, preferably at least polyamide 6 or polyamide 66, in particular polyamide 6,

[0123] B) 0.01 to 5 parts by mass of colorant with an average particle size d50 in the range from 1 to 12 pm, to be determined by laser diffractometry according to ISO 13320, containing the isomers 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1 : 1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5 and C) 1 to 150 parts by mass, preferably 5 to 80 parts by mass, particularly preferably 10 to 50 parts by mass of glass fibers with an average particle size analysis (laser granulometric measurement or laser diffractometry) according to ISO 13320 to be determined in the range of 1 to 50 mm, particularly preferably in the range of 1 to 10 mm, most preferably in the range of 2 to 7 mm.

[0124] In particular, in the process according to the invention, the glass fibers also have an average fiber diameter, determined by laser diffractometry according to ISO 13320, in the range from 7 to 18 pm, particularly preferably in the range from 9 to 15 pm.

[0125] For the sake of clarification, it should be noted that the scope of the present invention encompasses all definitions and parameters listed in general or preferred areas in the context of the electromobility components in any combination of the methods according to the invention.

[0126] Preferred use in glass fiber reinforced polyamides

[0127] Within the scope of the inventive uses, the isomer mixture to be used as a colorant is also preferably used in combination with glass fibers. Preferably, 1 to 150 parts by mass, preferably 5 to 80 parts by mass, particularly preferably 10 to 50 parts by mass, of glass fibers with an average initial length, determined by laser diffraction particle size analysis (laser granulometric measurement or laser diffractometry) according to ISO 13320, in the range of 1 to 50 mm, particularly preferably in the range of 1 to 10 mm, and very particularly preferably in the range of 2 to 7 mm, are used per 100 parts by mass of polyamide.

[0128] The invention relates in this case to the use of a colorant in polymer compositions containing the isomer mixture of 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1 : 1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5 with an average particle size d50 to be determined by laser diffractometry according to ISO 13320 in the range from 1 to 12 pm for obtaining color-streak-reduced polyamide-based electromobility components with a color difference AE <20, preferably AE <10, in particular AE <5, from the L*a*b* coordinates to a color number beginning with "2" of the RAL colour table, wherein 100 parts by mass of at least one polyamide, preferably at least polyamide 6 or polyamide 66, 0.01 to 5 parts by mass of the colourant and 1 to 150 parts by mass, preferably 5 to 80 parts by mass,particularly preferably 10 to 50 parts by mass of glass fibers with an average initial length determined by laser diffraction particle size analysis (laser granulometric measurement or laser diffractometry) according to ISO 13320 in the range of 1 to 50 mm, particularly preferably in the range of 1 to 10 mm, very particularly preferably in the range of 2 to 7 mm, are used.

[0129] The invention preferably relates to the use of a colorant in polymer compositions containing the isomer mixture of 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1:1:0.8-1.5 to 1:1.5:0.8-1.5 with an average particle size d50 to be determined by laser diffractometry according to ISO 13320 in the range from 1 to 12 pm for obtaining color streak-reduced polyamide-based electromobility components with a color difference AE <20, preferably AE <10, in particular AE <5, from the L*a*b* coordinates to a color number beginning with "2" of the RAL color table and an AC* > 1 to be determined according to DIN EN ISO 11664-4 to a corresponding reference sample whose isomer ratio is not in the range of 1 : 1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5, wherein in the polymer compositions per 100 parts by mass of at least one polyamide,preferably at least polyamide 6 or polyamide 66, 0.01 to 5 parts by mass of the colorant and 1 to 150 parts by mass, preferably 5 to 80 parts by mass, particularly preferably 10 to 50 parts by mass of glass fibers with an average initial length determined by laser diffraction particle size analysis (laser granulometric measurement or laser diffractometry) according to ISO 13320 in the range from 1 to 50 mm, particularly preferably in the range from 1 to 10 mm, very particularly preferably in the range from 2 to 7 mm.

[0130] The invention particularly preferably relates to the use of a colorant in polymer compositions containing the isomer mixture of 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1:1:0.8-1.5 to 1:1.5:0.8-1.5 with an average particle size d50 to be determined by laser diffractometry according to ISO 13320 in the range from 1 to 12 pm as a colorant for obtaining color streak-free polyamide-based electromobility components with a color difference AE <20, preferably AE <10, in particular AE <5, from the L*a*b* coordinates to a color number beginning with "2" of the RAL colour table and an AC* > 1 to be determined according to DIN EN ISO 11664-4 to a corresponding reference sample outside the above isomer ratio, wherein in the polymer compositions per 100 parts by mass of at least one polyamide, preferably at least polyamide 6 or polyamide 66, 0,01 to 5 parts by mass of the colorant and 1 to 150 parts by mass, preferably 5 to 80 parts by mass, particularly preferably 10 to 50 parts by mass of glass fibers with an average initial length determined by laser diffraction particle size analysis (laser granulometric measurement or laser diffractometry) according to ISO 13320 in the range of 1 to 50 mm, particularly preferably in the range of 1 to 10 mm, very particularly preferably in the range of 2 to 7 mm.

[0131] The invention very particularly preferably relates to the use of a colorant in polymer compositions containing the isomer mixture of 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1 : 1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5 with an average particle size d50 to be determined by laser diffractometry according to ISO 13320 in the range from 1 to 12 pm to obtain color streak-free polyamide-based electromobility components with a color difference AE <20, preferably AE <10, in particular AE <5, from the L*a*b* coordinates to a color number beginning with "2" of the RAL colour table and a (colour) brilliance to be determined according to DIN EN ISO 11664-4 with an AC* > 1 to a corresponding reference sample whose isomer ratio is not in the range of 1 : 1 : 0.8 -1.5 to 1 : 1.5 : 0.8 - 1.5, wherein in the polymer compositions per 100 parts by mass of at least one polyamide,Preferably at least polyamide 6 or polyamide 66, 0.01 to 5 parts by mass of the colorant, and 1 to 150 parts by mass, preferably 5 to 80 parts by mass, particularly preferably 10 to 50 parts by mass of glass fibers with an average initial length, determined by laser diffraction particle size analysis (laser granulometric measurement or laser diffractometry) according to ISO 13320, in the range of 1 to 50 mm, particularly preferably in the range of 1 to 10 mm, very particularly preferably in the range of 2 to 7 mm. Polyamide 6 is particularly preferably used as the polyamide.

[0132] For the sake of clarification, it should be noted that the scope of the present invention encompasses all definitions and parameters listed in general or preferred areas in the context of the electromobility components in any combination of the methods according to the invention.

[0133] Examples

[0134] To demonstrate the property improvements described in the invention, corresponding polyamide-based polymer compositions were first prepared by compounding. The individual components were mixed in a twin-screw extruder (Leistritz LSM 30-34 from Leistritz AG (Nuremberg, Germany)) at temperatures between 270 and 300°C, extruded as a strand, cooled until pelletizable, and pelletized. After drying (typically two days at 80°C in a vacuum drying cabinet), the pellets were processed by injection molding at temperatures between 270 and 290°C to produce standard test specimens for the respective tests.

[0135] In the context of the present invention, the different isomer distributions, determined via HPLC (high pressure liquid chromatography), were used as a measure of the color brilliance of the molding compounds described in Table I in the form of 60*40*2 mm 3- Determine the C* value of the plates according to DIN EN ISO 11664-4 using a d / 8° spectrophotometer in a coloristic measurement (D65 standard illuminant, CIE 1976 L*a*b* color space). Furthermore, the mean particle size d50 according to ISO 13320 was to be determined as a measure of the reduction of color streaks. HPLC is a liquid chromatography technique that can not only separate substances but also identify and quantify them (determine the exact concentration) using standards.

[0136] Educts:

[0137] Component A) Polyamide 6 (Durethan® B30S, Lanxess Deutschland GmbH, Cologne,

[0138] Germany)

[0139] Component B'): Colorant with an average particle size d50 in the range of 18.7 pm, determined by laser diffractometry according to ISO 13320, containing the isomers 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1 : 2 : 1, prepared according to synthesis procedure 1

[0140] Component B): Colorant with an average particle size d50 in the range of 5 pm, determined by laser diffractometry according to ISO 13320, containing the isomers 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1:1, 2:1, prepared according to synthesis procedure 2

[0141] Table I The results in Table I show an improvement in color brilliance and a reduction in the average particle size d50 in Example 1 according to the invention compared to Comparison 1 not according to the invention. The plastic sheets examined in Example 1 according to the invention had a RAL color value of 2001 with an AE of <10. In addition, during processing of the colored polyamide granules, when using a colorant with the isomer ratio according to the invention in the form of component B (Example 1), a clear reduction (-) in streaking was observed that was visible to the naked eye compared to when using component B' as colorant (Comparison 1) with clear streaking that was visible to the naked eye (+).

[0142] Synthesis procedure 1

[0143] Preparation of the colorant containing the isomers 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1:2:1 in analogy to the instructions of the examples in DE-A 43 39699 (not according to the invention)

[0144] 300 g of phenol were melted at a temperature of 60°C. 45 g (285 mmol) of 1,8-diaminonaphthalene were added, and the mixture was stirred for 30 minutes. Subsequently, 45 g (145 mmol) of 4,4-oxydiphthalic anhydride were added, and the reaction mixture was stirred for a further 30 minutes. The reaction mixture was then heated to 175°C and held at this temperature for 10 hours, and the resulting water of reaction was distilled off. 295 g of methanol were then added to the reaction mixture at a temperature of 175°C, and the temperature of the reaction mixture was cooled to 30°C within one hour. The reaction product was isolated on a suction filter, washed first with 440 g of methanol and then with 800 g of water, and dried in a vacuum drying cabinet at 80°C and 150 mbar. The isomer distribution of the dye was determined to be 1:2:1 and the mean particle size d50 to be 18.7 pm.

[0145] Synthesis procedure 2

[0146] Preparation of the colorant containing the isomers 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in the ratio 1:1, 2:1 (according to the invention)

[0147] 300 g of phenol were melted at 60°C. 45 g (285 mmol) of 1,8-diaminonaphthalene and 3.1 g of 2,6-lutidine (28.5 mmol) were added, and the mixture was stirred for 30 minutes. 45 g (145 mmol) of 4,4-oxydiphthalic anhydride were then added, and the reaction mixture was stirred for a further 30 minutes. The reaction mixture was then heated to 175°C and held at this temperature for 10 hours, and the resulting water of reaction was distilled off. 295 g of methanol were then added to the reaction mixture at 175°C, and the reaction mixture was cooled to 30°C over the course of one hour. The reaction product was isolated on a suction filter and then stirred in 300 g of phenol at 175°C for 45 minutes. 295 g of methanol were then added at a temperature of 175°C and the temperature of the reaction mixture was cooled to 30°C within three hours.The reaction product was isolated on a suction filter and washed first with 440 g of methanol and then with 800 g of water, and dried in a vacuum drying cabinet at 80°C and 150 mbar. The isomer distribution of the dye was determined to be 1:1, 2:1, and the average particle size d50 was 5 pm.

[0148] Determination of (color) brilliance according to DIN EN ISO 11664-4

[0149] To determine the (color) brilliance according to DIN EN ISO 11664-4, samples of the isomer mixtures from synthesis procedure 1 and synthesis procedure 2 were subjected to a coloristic measurement. For this purpose, polyamide 6 granules colored with 1 wt.% titanium dioxide were dried in a circulating air dryer at 120°C for 4 hours. 1 kg of this granule was mixed with 0.20 wt.% of the colorant to be tested from synthesis procedure 1 and from synthesis procedure 2, and this mixture was extruded at a melt temperature of 280°C using a twin-screw extruder and then re-granulated. The respective colored granules were dried at 120°C for 4 hours and sample plates measuring 4cm x 6cm x 0.2cm were produced from the respective dried, colored granules on an injection molding machine at 280°C melt temperature, 10 bar back pressure and 80°C mold temperature.After at least ten spray cycles, sample plates were removed for color measurement and allowed to rest at room temperature for at least 1 hour. Remission measurements were then taken from the sample plates using a d / 8° spectrophotometer. An improvement in (color) brilliance within the meaning of the present invention was present if the AC* compared to a comparison measurement based on a preparation outside the claimed isomer ratio was > 1, because even an AC* of 1 is visible to the naked eye.

Claims

1. Electromobility components with a color difference AE <20 from the L*a*b* coordinates to a color number beginning with "2" in the RAL color table, containing polymer compositions based on at least one polyamide and a colorant with an average particle size d50 to be determined by laser diffractometry according to ISO 13320 in the range from 1 to 12 pm, containing 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1 : 1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5, wherein in the polymer compositions, 0.01 to 5 Mass fractions of colorant are present.

2. Electromobility components according to claim 1, characterized in that polyamide stands for polyamide 6 or polyamide 66.

3. Electromobility components according to claim 1 or 2, characterized in that 0.01 to 3 parts by mass of the colorant are present in the polymer compositions per 100 parts by mass of polyamide.

4. Electromobility components according to at least one or more of claims 1 to 3, characterized in that in the polymer compositions, in addition to the polyamide and the colorant, glass fibers are used as filler or reinforcing material, preferably chopped long glass fibers with an average initial length in the range of 1 to 50 mm, to be determined by means of laser diffraction particle size analysis according to ISO 13320.

5. Electromobility components according to claim 4, characterized in that 1 to 150 parts by mass, preferably 5 to 80 parts by mass, particularly preferably 10 to 50 parts by mass of glass fibers are used in the polymer compositions per 100 parts by mass of polyamide.

6. Electromobility components according to claim 4 or 5, characterized in that the glass fibers have an average fiber diameter determined by laser diffractometry according to ISO 13320 in the range of 7 to 18 pm, preferably in the range of 9 to 15 pm.

7. Electromobility components according to one or more of claims 1 to 6, characterized in that they are components which are either in direct contact with live parts or which, in the direct vicinity or spatial proximity thereto, have the function of a contact protection, a Have warning markings or shielding, preferably components that are in direct contact with the live parts.

8. Electromobility components according to one or more of claims 1 to 7, characterized in that in the case of battery components they are standard or round cell modules, cell housings, cell connectors, cell contact systems, module connectors, pressure equalization elements, seals and intelligent battery management systems, in the case of proton-exchange membrane fuel cells, urn modules or stack modules, metallic bipolar plates, end and media modules and sealing systems, in the case of electric drive units they are seals and functionally integrated housing covers, housing seals, shaft sealing rings, plate carriers as well as stamped packages, shielding systems or dynamic precision parts.

9. Electromobility components according to one or more of claims 1 to 8, characterized in that they are injection-molded, extruded or blow-molded products, preferably injection-molded products.

10. A process for producing electromobility components with a color difference AE <20 from the L*a*b* coordinates to a color number beginning with "2" in the RAL color table, characterized in that at least one polyamide and one colorant are mixed to form polymer compositions, extruded into strands, cooled to granularity, dried and granulated, and the polymer compositions are then further processed by injection molding, including the special processes gas injection technology (GIT), water injection technology (WIT) or projectile injection technology (PIT), in extrusion processes, including profile extrusion, or by blow molding, wherein A) per 100 parts by mass of at least one polyamide, preferably polyamide 6 or polyamide 66, B) 0.01 to 5 parts by mass of colorant containing the isomers 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1 : 1 : 0.8 - 1.5 to 1 : 1.5 : 0.8 - 1.5 with an average particle size d50 in the range from 1 to 12 pm, to be determined by laser diffractometry according to ISO 13320.

11. Process according to claim 10, characterized in that in addition to components A) and B) also C) glass fibers with an average initial length to be determined by means of laser diffraction particle size analysis according to ISO 13320 in the range of 1 to 50 mm, preferably 1 to 150 parts by mass of glass fibers to 100 parts by mass of polyamide.

12. Use of a colorant containing in polymer compositions the isomer mixture of 9,9'-oxybis-12H-phthaloperin-12-one, 9,10-oxybis-12H-phthaloperin-12-one and 10,10'-oxybis-12H-phthaloperin-12-one in a ratio of 1:1:0.8-1.5 to 1:1.5:0.8-1.5 with an average particle size d50 to be determined by laser diffractometry according to ISO 13320 in the range from 1 to 12 pm for obtaining color streak-reduced polyamide-based electromobility components with a color difference AE <20, preferably AE <10, in particular AE <5, from the L*a*b* coordinates to a color number beginning with "2" in the RAL color table, wherein in the polymer compositions, 0.01 to 5 parts by mass of colorant are present per 100 parts by mass of at least one polyamide and reduces color streaks, a reduction of superficially visible color streaks on samples after injection molding by at least 10% compared to a 10,10'-Oxybis-12H-phthaloperin-12-one based colorant obtainable according to Example 3 in EP 1 118 640 A1., 13. Use according to claim 12, characterized in that 0.01 to 3 parts by mass of colorant are present in the polymer compositions per 100 parts by mass of polyamide.

14. Use according to claim 12 or 13, characterized in that the polymer compositions additionally contain glass fibers having an average initial length, to be determined by means of laser diffraction particle size analysis according to ISO 13320, in the range from 1 to 50 mm, particularly preferably in the range from 1 to 10 mm, very particularly preferably in the range from 2 to 7 mm.

15. Use according to claim 14, characterized in that in the polymer compositions, 1 to 150 parts by mass, preferably 5 to 80 parts by mass, particularly preferably 10 to 50 parts by mass, of glass fibers are present per 100 parts by mass of polyamide, preferably polyamide 6 or polyamide 66.

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