Electromobility components

Abstract

The present invention relates to: electromobility components having a colour difference ΔE <20 between the L*a*b* coordinates and a colour number beginning with "2" of the RAL colour chart, containing polymer compositions on the basis of at least one polyester and a pigment having an average particle size d50, determined according to ISO 13320 by means 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 pigment 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 polyester-based electromobility components having a colour difference ΔE <20 between the L*a*b* coordinates and a colour number beginning with "2" of the RAL colour chart, in particular for reducing cross-colour effect in the production of polyester-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, comprising polymer compositions based on at least one polyester 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 d50 to be determined according to ISO 13320 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 polyester-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 polyester-based electromobility components.

[0003] State of the art

[0004] Engineering thermoplastics such as polyester 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] 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.

[0006] 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 polyester. For example, under extreme conditions such as those encountered in polyester 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 polyester-based molding compounds, especially in injection molding, presents a particular challenge for the specialist.

[0007] Based on the teaching of EP 3 947 020 B1, the object of the present invention was therefore to provide electromobility components based on polyesters 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 polyester-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.

[0008] Surprisingly, it has now been found that electromobility components based on polyesters 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:

[0009] 9,10-Oxybis-12H-phthaloperin-12-one

[0010] 9,9'-Oxybis-12H-phthaloperin-12-one (color) brilliance

[0011] 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, polyester 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 left 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* is > 1 compared to a comparison measurement based on a preparation outside the claimed isomer ratio, because an AC* of 1 is already visible to the naked eye.The higher the (color) brilliance of a sample, the more saturated the color is perceived.

[0012] 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.

[0013] Subject of the invention

[0014] 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, containing polymer compositions based on at least one polyester 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 of colorant are present per 100 mass parts of polyester. present.

[0015] The invention preferably relates to electromobility components with a color difference AE <10 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 polyester 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 of colorant are present per 100 mass parts of polyester. present.

[0016] 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 polyester 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 parts by mass of colorant per 100 parts by mass of polyester present.

[0017] 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-

[0018] 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.

[0019] The invention further 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-reduced polyester-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 the polymer compositions contain 0.01 to 5 parts by mass of colorant per 100 parts by mass of at least one polyester.

[0020] 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.

[0021] 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 polyester-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 starting with "2" of the RAL color table and a color number according to DIN EN ISO 11664-4 to be determined (colour) brilliance 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 0.1 to 100 parts by mass of polyester01 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 brightness.

[0022] The invention 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 polyester-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, 0.05 to 100 parts by mass of polyester01 to 5 parts by mass of colorant are present. .,

[0023] Free of color streaks in the sense of the present invention means a reduction of superficially visible color streaks on polyester-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.

[0024] The invention 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 electromobility components based on at least polyester 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 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 0.1 to 100 parts by mass of polyester01 to 5 parts by mass of colorant are present.,

[0025] 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 also present per 100 parts by mass of at least one polyester.

[0026] 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 polyester to be used as starting material with the colorant comprising 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 present invention are preferably injection-molded, extrusion-molded or blow-molded components, preferably injection-molded components.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] Orange: 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:

[0031] Table 1

[0032] L* a* b*

[0033] RAL 2000 yellow orange 58.20 37.30 68.68

[0034] RAL 2001 red-orange 49.41 39.79 35.29

[0035] RAL 2002 blood orange 47.74 47.87 33.73

[0036] RAL 2003 pastel orange 66.02 41.22 52.36

[0037] RAL 2004 pure orange 56.89 50.34 49.81

[0038] RAL 2005 Bright Orange 72.27 87.78 82.31

[0039] RAL 2007 Bright Orange 76.86 47.87 97.63

[0040] RAL 2008 light red orange 60.33 46.91 60.52

[0041] RAL 2009 Traffic Orange 55.83 47.79 48.83

[0042] RAL 2010 signal orange 55.39 40.10 42.42

[0043] RAL 2011 deep orange 59.24 40.86 64.50

[0044] RAL 2012 salmon orange 57.75 40.28 30.66

[0045] RAL 2013 pearl orange 40.73 32.14 34.92

[0046] 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 coordinates along the red-green axis, and b* describes the color coordinates along the yellow-blue axis using D65 standard illuminant with a 10° field of view for 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 coordinate 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, while the b* axis runs between blue and yellow. Complementary colors are 180° opposite each other, and all achromatic colors lie in their center (the coordinate origin a*=0, b*=0).

[0047] 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.

[0048] Further preferred embodiments of the invention

[0049] 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 polyester 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 an amount of 1 to 150 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 polyester.

[0050] 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" in the RAL color table based on polymer compositions containing, in addition to the at least one polyester 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 Mass fraction of polyester.

[0051] 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" in the RAL color table based on polymer compositions containing, in addition to the at least one polyester 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, in each case based on 100 parts by mass of polyester.

[0052] C2-Cio polyalkylene terephthalates as polyesters

[0053] C2-C10-polyalkylene terephthalates preferably used as polyesters in the present invention are reaction products of an alcohol moiety having 2 to 10 carbon atoms in the alcohol moiety and terephthalic acid. C2-C10-polyalkylene terephthalates are known to the person skilled in the art and are adequately described in the literature. They contain an aromatic ring in the main chain, which originates from terephthalic acid, and an aliphatic moiety, which originates from a dihydroxy compound. The aromatic ring of terephthalic acid can also be substituted. Preferred substituents are halogens or C1-C4-alkyl groups. Preferred halogens are chlorine or bromine. Preferred C1-C4-alkyl groups are methyl, ethyl, n-propyl, or n-, i-, or t-butyl groups.

[0054] Preferably used C2-C polyalkylene terephthalates can be prepared by reacting aromatic dicarboxylic acids, their esters or other ester-forming derivatives with aliphatic dihydroxy compounds in a manner known to the person skilled in the art.

[0055] In the case of C2-C6 polyalkylene terephthalates, up to 30 mol% of the terephthalic acid used in their preparation can be replaced by 2,6-naphthalenedicarboxylic acid or isophthalic acid, or mixtures thereof. Up to 70 mol%, preferably not more than 10 mol%, of the terephthalic acid can be replaced by aliphatic or cycloaliphatic dicarboxylic acids such as adipic acid, azelaic acid, sebacic acid, dodecanedioic acids, or cyclohexanedicarboxylic acids.

[0056] Of the aliphatic dihydroxy compounds, diols with 2 to 6 carbon atoms, especially 1,2-ethanediol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, 1,4-hexanediol, 1,4-cyclohexanediol, 1,4-cyclohexanedimethanol, neopentyl glycol, or mixtures thereof, are preferred. Particularly preferred polyalkylene terephthalates are derived from alkanediols with 2 to 4 carbon atoms. Of these, polyethylene terephthalate (PET), polypropylene terephthalate, and polybutylene terephthalate (PBT), or mixtures thereof, are particularly preferred. Also preferred are PET and / or PBT which contain up to 1 wt.%, preferably up to 0.75 wt.%, of 1,6-hexanediol and / or 2-methyl-1,5-pentanediol as further monomer units.

[0057] Preferably, C2-C10 polyalkylene terephthalates to be used as polyesters according to the invention have a viscosity number to be determined according to ISO 1628 in the range from 50 to 220, preferably in the range from 80 to 160, measured in a 0.5% by weight solution in a phenol / o-dichlorobenzene mixture, weight ratio 1:1 at 25°C.

[0058] C2-C10-polyalkylene terephthalates preferably used as polyesters according to the invention preferably have a carboxyl end group content of up to 100 meq / kg polyester, more preferably a carboxyl end group content of up to 50 meq / kg polyester, and especially preferably a carboxyl end group content of up to 40 meq / kg polyester. Such C2-C10-polyalkylene terephthalates can be prepared, for example, by the process of DE-A 4401 055. The carboxyl end group content is usually determined by titration methods, in particular potentiometry.

[0059] Particularly preferred C2-C12 polyalkylene terephthalates for use as polyesters are produced using titanium catalysts. These preferably have a residual titanium content of <250 ppm, more preferably <200 ppm, and most preferably <150 ppm after polymerization.

[0060] The polybutylene terephthalate (PBT) [CAS No. 24968-12-5] preferably used according to the invention as C2-C polyalkylene terephthalate is prepared from terephthalic acid or its reactive derivatives and butanediol by known methods (Kunststoff-Handbuch, Vol. VIII, pp. 695-743, Karl Hanser Verlag, Munich 1973).

[0061] The PBT to be used as polyester preferably contains at least 80 mol%, preferably at least 90 mol%, based on the dicarboxylic acid,

[0062] Terephthalic acid residues.

[0063] PBT, which is preferably used as polyester according to the invention, can be used in a

[0064] Embodiment containing, in addition to terephthalic acid residues, up to 20 mol% of residues of other aromatic dicarboxylic acids having 8 to 14 C atoms or residues of aliphatic dicarboxylic acids having 4 to 12 C atoms, in particular residues of phthalic acid, isophthalic acid, naphthalene-2,6-dicarboxylic acid, 4,4'-diphenyldicarboxylic acid, succinic acid, adipic acid, sebacic acid, azelaic acid, cyclohexanediacetic acid, cyclohexanedicarboxylic acid, 2,5-furandicarboxylic acid.

[0065] PBT to be used preferably as a polyester according to the invention can, in one embodiment, contain, in addition to butanediol, up to 20 mol% of other aliphatic diols having 3 to 12 C atoms or up to 20 mol% of cycloaliphatic diols having 6 to 21 C atoms, preferably residues of 1,3-propanediol, 2-ethyl-1,3-propanediol, neopentyl glycol, 1,5-pentanediol, 1,6-hexanediol, 1,4-cyclohexanedimethanol, 3-methyl-2,4-pentanediol, 2-methyl-2,4-pentanediol, 2,2,4-trimethylpentanediol-1,3, 2,2,4-trimethylpentanediol-1,5, 2-ethyl-1,3-hexanediol, 2,2-diethyl-1,3-propanediol, 2,5-hexanediol, 1 ,4-Di-(ß-hydroxyethoxy)-benzene, 2,2-bis-(4-hydroxycyclohexyl)-propane, 2,4-dihydroxy-1, 1,3,3-tetramethylcyclobutane, 2,2-bis-(3-ß-hydroxyethoxyphenyl)-propane and 2,2-bis-(4-hydroxypropoxyphenyl)-propane.

[0066] PBT, which is preferably used as a polyester, has an intrinsic viscosity according to EN-ISO 1628 / 5 in the range of 40 to 170 cm 3 / g, particularly preferably in the range of 50 to 150cm 3 / g, especially preferred in the range of 65 to 135cm 3 / g, each measured in an Ubbelohde viscometer in phenol / o-dichlorobenzene (1:1 parts by weight) at 25°C. The intrinsic viscosity / V, also known as the Staudinger index or limiting viscosity, is proportional to the average molecular mass according to the Mark-Houwink equation and is the extrapolation of the viscosity number VN for the case of vanishing polymer concentrations. It can be estimated from series of measurements or by using suitable approximate methods (e.g. Billmeyer). The VN [ml / g] is obtained from measuring the solution viscosity in a capillary viscometer, e.g. an Ubbelohde viscometer. The solution viscosity is a measure of the average molecular weight of a plastic. It is determined on the dissolved polymer using different solvents (m-cresol, tetrachloroethane, phenol, 1,2-dichlorobenzene, etc.) and concentrations.The viscosity number (VN) allows for monitoring the processing and performance properties of plastics. Thermal stress on the polymer, aging processes, exposure to chemicals, weathering, and light can be investigated through comparative measurements. See also: http: / / de.wikipedia.org / wiki / Viskosimetrie and http: / / de.wikipedia.org / wiki / Mark-Houwink-Gleichung.

[0067] PBT, which is preferably used as a polyester, can also be used in a blend with other polymers. PBT blends used according to the invention are produced by compounding. During such compounding, conventional additives, in particular mold release agents or elastomers, can also be mixed in the melt, thereby improving the properties of the blends.

[0068] PBT to be used preferably according to the invention can be obtained as Pocan® B 1300 from Lanxess Deutschland GmbH, Cologne.

[0069] Polycarbonate as polyester

[0070] According to the invention, at least one thermoplastic from the group of polycarbonates can also be used as the polyester. Polycarbonates to be used with preference according to the invention are those homopolycarbonates or copolycarbonates based on bisphenols of the general formula (I),

[0071] HO-Z-OH where Z is a divalent organic radical having 6 to 30 C atoms which contains one or more aromatic groups.

[0072] Preferably, at least one polycarbonate based on bisphenols of the formula (Ia) is used as the polyester wherein

[0073] A represents a single bond or a radical from the series Ci-Cs-alkylene, C2-C5-alkylidene, Cs-Ce-cycloalkylidene, -O-, -SO-, -CO-, -S-, -SO2-, C6-Ci2-arylene, to which further aromatic rings, optionally containing heteroatoms, may be condensed, or A represents a radical of the formula (II) or (III)

[0074] (II)

[0075] (Hl) where R 7 and R 8 can be selected individually for each Y and independently represent hydrogen or Ci-Ce-alkyl, preferably hydrogen, methyl or ethyl,

[0076] B is each Ci-Ci2-alkyl, preferably methyl, halogen, preferably chlorine and / or bromine, x is each independently 0, 1 or 2, p is 1 or 0,

[0077] Y represents carbon, and m represents an integer from 4 to 7, preferably 4 or 5, with the proviso that at least one Y (carbon atom) is R 7 and R8 simultaneously represent alkyl.

[0078] In a preferred embodiment, when m is 4, Y is -CR 7 R 8 -CR 7 R 8 -CR 7 R 8 -CR 7 R 8 -; if m stands for 5, Y stands for - CR 7 R 8 -CR 7 R 8 -CR 7 R 8 -CR 7 R 8 -CR 7 R 8 -; if m stands for 6, Y stands for -CR 7 R 8 -CR 7 R 8 -CR 7 R 8 -CR 7 R 8 - CR 7 R 8 -CR 7 R 8 -; and if m stands for 7, Y stands for -CR 7 R 8 -CR 7 R 8 - CR 7 R 8 -CR 7 R 8 -CR 7 R 8 - CR 7 R 8 -CR 7 R 8 -.

[0079] Preferred bisphenols containing the general formula (II) are bisphenols from the group dihydroxydiphenyls, bis-(hydroxyphenyl)-alkanes, bis-(hydroxyphenyl)-cycloalkanes, indanebisphenols, bis-(hydroxyphenyl)-sulfides, bis-(hydroxyphenyl)-ethers, bis-(hydroxyphenyl)-ketones, bis-(hydroxyphenyl)-sulfones, bis-(hydroxyphenyl)-sulfoxides and a,a'-bis-(hydroxyphenyl)-diisopropylbenzenes.

[0080] Derivatives of the bisphenols mentioned, which are preferably obtainable by alkylation or halogenation on the aromatic rings of the bisphenols mentioned, are also preferably used bisphenols containing the general formula (II).

[0081] Besonders bevorzugte Bisphenole enthaltend die allgemeine Formel (II) sind Hydrochinon, Resorcin, 4,4’-Dihydroxydiphenyl, Bis-(4-hydroxyphenyl)sulfid, Bis-(4- hydroxyphenyl)sulfon, Bis-(3,5-dimethyl-4-hydroxyphenyl)-methan, Bis-(3,5-dimethyl-4- hydroxyphenyl)-sulfon, 1 ,1-Bis-(3,5-dimethyl-4-hydroxyphenyl)-p / m-diisopropylbenzol, 1 ,1- Bis-(4-hydroxyphenyl)-1-phenyl-ethan, 1 ,1-Bis-(3,5-dimethyl-4-hydroxyphenyl)-cyclo- hexan, 1 ,1-Bis-(4-hydroxyphenyl)-3-methylcyclohexan, 1 ,1-Bis-(4-hydroxyphenyl)-3,3- dimethylcyclohexan, 1 , 1 -Bis-(4-hydroxyphenyl)-4-methylcyclohexan. 1 , 1 -Bis-(4- hydroxyphenyl)-cyclohexan, 1 ,1-Bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexan, 2,2-Bis- (3,5-dichlor-4-hydroxyphenyl)-propan, 2,2-Bis-(3-methyl-4-hydroxyphenyl)-propan, 2,2-Bis- (3,5-dimethyl-4-hydroxyphenyl)-propan, 2,2-Bis-(4-hydroxyphenyl)-propan (d.h.Bisphenol A), 2,2-bis-(3-chloro-4-hydroxyphenyl)-propane, 2,2-bis-(3,5-dibromo-4-hydroxyphenyl)-propane, 2,4-bis-(4-hydroxyphenyl)-2-methylbutane, 2,4-bis-(3,5-dimethyl-4-hydroxyphenyl)-2-methylbutane, a,a'-bis-(4-hydroxyphenyl)-o-diisopropylbenzene, a,a'-bis-(4-hydroxyphenyl)-m-diisopropylbenzene (ie, bisphenol M), a,a'-bis-(4-hydroxyphenyl)-p-diisopropylbenzene and indane bisphenol.

[0082] The described bisphenols according to the general formula (II) can be prepared by processes known to the person skilled in the art, preferably from the corresponding phenols and ketones.

[0083] Polycarbonates used as polyesters can also be produced by known processes. Preferred processes for producing polycarbonates include, for example, production from bisphenols with phosgene using the interfacial process, or from bisphenols with phosgene using the homogeneous phase process, the so-called pyridine process, or from bisphenols with carbonic acid esters using the melt transesterification process. The bisphenols mentioned and their production processes are described, for example, in the monograph by H. Schnell, "Chemistry and Physics of Polycarbonates," Polymer Reviews, Volume 9, p.77-98, Interscience Publishers, New York, London, Sidney, 1964 and in US-A 3,028,635, in US-A 3,062,781, in US-A 2,999,835, in US-A 3,148,172, in US-A 2,991,273, in US-A 3,271,367, in US-A 4,982,014, in US-A 2,999,846, in DE-A 1,570,703, in DE-A 2,063,050, in DE-A 2,036,052, in DE-A 2,211,956, in DE-A 3,832,396, and in FR-A 1,561 518 as well as in the Japanese Laid-open publications with application numbers JP-A 62039 1986, JP-A 62040 1986 and JP-A 105550 1986.

[0084] 1,1-Bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane and its preparation is described, for example, in US-A 4 982 014.

[0085] Indanebisphenols and their preparation are described, for example, in US-A 3,288,864, in JP-A 60,035,150 and in US-A 4,334,106. Indanebisphenols can be prepared, for example, from isopropenylphenol or its derivatives or from dimers of isopropenylphenol or its derivatives in the presence of a Friedel-Craft catalyst in organic solvents.

[0086] The melt transesterification process is described in H. Schnell, "Chemistry and Physics of Polycarbonates," Polymer Reviews, Volume 9, pp. 44 to 51, Interscience Publishers, New York, London, Sydney, 1964, and in DE-A 1 031 512. In the production of polycarbonate, raw materials and auxiliaries with a low degree of impurities are preferably used. Particularly in production by the melt transesterification process, the bisphenols and carbonic acid derivatives used should be as free as possible from alkali ions and alkaline earth ions. Such pure raw materials can be obtained, for example, by recrystallizing, washing, or distilling the carbonic acid derivatives, especially carbonic acid esters, and the bisphenols.

[0087] Polycarbonates to be used as polyesters according to the invention preferably have a weight average molar mass M win the range of 10,000 to 200,000 g / mol, which can be determined by ultracentrifugation (see K. Schilling, Analytical Ultracentrifugation, Nanolytics GmbH, Dallgow, pages 1-15) or light scattering measurement according to DIN EN ISO 16014-5:2012-10. The polycarbonates to be used particularly preferably have a weight-average molar mass in the range of 12,000 to 80,000 g / mol, especially preferably a weight-average molar mass in the range of 20,000 to 35,000 g / mol.

[0088] The average molar mass of polycarbonates preferably used as polyesters according to the invention can preferably be adjusted in a known manner by an appropriate amount of chain terminators. The chain terminators can be used individually or as a mixture of different chain terminators.

[0089] Preferred chain terminators are both monophenols and monocarboxylic acids. Preferred monophenols are phenol, p-chlorophenol, p-tert-butylphenol, cumylphenol, or 2,4,6-tribromophenol, as well as long-chain alkylphenols, especially 4-(1,1,3,3-tetramethylbutyl)phenol or monoalkylphenols or dialkylphenols with a total of 8 to 20 carbon atoms in the alkyl substituents, especially 3,5-di-tert-butylphenol, p-tert-octylphenol, p-dodecylphenol, 2-(3,5-dimethylheptyl)phenol, or 4-(3,5-dimethylheptyl)phenol. Preferred monocarboxylic acids are benzoic acid, alkylbenzoic acids, or halobenzoic acids.

[0090] Particularly preferred chain terminators are phenol, p-tert-butylphenol, 4-(1,1,3,3-tetramethylbutyl)phenol or cumylphenol.

[0091] The amount of chain terminators to be used is preferably in the range of 0.25 to 10 mol%, based on the sum of the bisphenols used.

[0092] Polycarbonates preferably used as polyesters according to the invention can be branched in a known manner, preferably by incorporating trifunctional or more than trifunctional branching agents. Preferred branching agents are those with three or more than three phenolic groups or those with three or more than three carboxylic acid groups.

[0093] Besonders bevorzugte Verzweiger sind Phloroglucin, 4,6-Dimethyl-2,4,6-tri-(4-hydroxy- phenyl)-hepten-2, 4,6-Dimethyl-2,4,6-tri-(4-hydroxyphenyl)-heptan, 1 ,3,5-T ri-(4- hydroxyphenyl)-benzol, 1 ,1 ,1-Tris-(4-hydroxyphenyl)-ethan, Tri-(4-hydroxyphenyl)- phenylmethan, 2,2-Bis-[4,4-bis-(4-hydroxyphenyl)-cyclohexyl]-propan, 2,4-Bis-(4- hydroxyphenyl-isopropyl)-phenol, 2,6-Bis-(2-hydroxy-5'-methyl-benzyl)-4-methylphenol, 2- (4-Hydroxyphenyl)-2-(2,4-dihydroxyphenyl)-propan, Hexa-(4-(4-hydroxyphenyl-isopropyl)- phenyl)-terephthalsäureester, Tetra-(4-hydroxyphenyl)-methan, Tetra-(4-(4- hydroxyphenyl-isopropyl)-phenoxy)-methan und 1 ,4-Bis-(4',4"-dihydroxytriphenyl)- methylbenzol, 2,4-Dihydroxybenzoesäure, Trimesinsäure, Cyanurchlorid, 3,3-Bis-(3- methyl-4-hydroxyphenyl)-2-oxo-2,3-dihydroindol, Trimesinsäuretrichlorid oder a,a‘,a ’-Tris- (4-hydroxyphenol)-1 ,3,5-triisopropylbenzol.

[0094] Very particularly preferred branching agents are 1,1,1-tris-(4-hydroxyphenyl)ethane or 3,3-bis-(3-methyl-4-hydroxyphenyl)-2-oxo-2,3-dihydroindole.

[0095] The amount of branching agent to be used is preferably in the range of 0.05 mol% to 2 mol%, based on the moles of bisphenols used.

[0096] In the case of polycarbonate production by the interfacial process, the branching agents are preferably initially introduced with the bisphenols and the chain terminators in an aqueous alkaline phase, or dissolved in an organic solvent and added together with the carbonic acid derivatives. In the case of the transesterification process, the branching agents are preferably added together with the dihydroxyaromatics or bisphenols.

[0097] Catalysts to be used with preference in the production of polycarbonates to be used according to the invention preferably as polyesters by the melt transesterification process are ammonium salts and phosphonium salts, as described, for example, in US-A 3 442 864, JP-A-14742 / 72, US-A 5 399 659 or DE-A 19 539 290.

[0098] In a preferred embodiment, copolycarbonates can also be used as polyesters. Copolycarbonates within the meaning of the invention are, in particular, polydiorganosiloxane-polycarbonate block copolymers whose weight-average molar mass M wpreferably in the range from 10,000 to 200,000 g / mol, particularly preferably in the range from 20,000 to 80,000 g / mol, determined by gel chromatography in accordance with DIN EN ISO 16014-5:2012-10 after prior calibration by light scattering measurement or ultracentrifugation. The content of aromatic carbonate structural units in the polydiorganosiloxane-polycarbonate block copolymers is preferably in the range from 75 to 97.5 wt.%, particularly preferably in the range from 85 to 97 wt.%. The content of polydiorganosiloxane structural units in the polydiorganosiloxane-polycarbonate block copolymers is preferably in the range from 25 to 2.5 wt.%, particularly preferably in the range from 15 to 3 wt.%. The polydiorganosiloxane-polycarbonate block copolymers can preferably be prepared starting from a,o-bishydroxyaryloxy-end-group-containing polydiorganosiloxanes with an average degree of polymerization P n in the range of 5 to 100, particularly preferably with an average degree of polymerization Pn in the range of 20 to 80.

[0099] Polycarbonates particularly preferred for use as polyesters are the homopolycarbonate based on bisphenol A, the homopolycarbonate based on 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, and the copolycarbonates based on the two monomers bisphenol A and 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane (= bisphenol TMC). Polycarbonates preferred for use as polyesters according to the invention are available, for example, under the Makrolon® brand from Covestro AG, Leverkusen.

[0100] In one embodiment, conventional additives, in particular mold release agents, can be mixed into the polycarbonates used as polyesters in the melt or applied to the surface. Preferably, the polycarbonates used as polyesters already contain mold release agents prior to subsequent compounding with the other components. Compounding (from English: compound = "mixture") is understood by those skilled in the art to be a term from plastics technology that is synonymous with plastics processing and describes the refinement of plastics by adding additives (fillers, additives, etc.) to specifically optimize the property profiles. See: https: / / de.wikipedia.org / wiki / Compoundierung. Compounding is preferably carried out in extruders, particularly preferably in co-rotating twin-screw extruders, counter-rotating twin-screw extruders,

[0101] Planetary roller extruders or co-kneaders and includes the process operations of conveying, melting, dispersing, mixing, degassing and pressure build-up.

[0102] In a preferred embodiment, blends of polycarbonate and polyalkylene terephthalates, which are also offered by Covestro AG under the Makroblend® brand, can also be used as polyesters. These are preferably PC-PET blends, PC-PBT blends, or PC-PCT-G blends, where PC stands for polycarbonate, PET for polyethylene terephthalate, PBT for polybutylene terephthalate, and PCT for polycyclohexylenedimethylene terephthalate.

[0103] 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.

[0104] 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.

[0105] 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 polyester matrix being particularly preferred.

[0106] Additional components

[0107] In a preferred embodiment, at least one filler or reinforcing material is used in the polymer compositions in addition to the polyester and the colorant. Mixtures of two or more different fillers and / or reinforcing materials can also be used.

[0108] 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.

[0109] 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.

[0110] 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) in accordance with 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 laser diffraction particle size determination / laser diffractometry in accordance with ISO 13320, see: https: / / de.wikipedia.org / wiki / Laserbeugungs-Partikelgr%C3%B6%C3%9Fenanalyse. Due to processing into the molding compound (compounding) or into the product, particularly in the injection molding process, the glass fibers may have a smaller d90 or d50 value in the molding compound or in the product than the glass fibers originally used.Thus, the arithmetic mean value 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 data given in this description for fillers and reinforcing materials, in particular for glass fibers, refer to the state before any processing, in particular before compounding or before processing, in particular by injection molding.

[0111] 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.

[0112] 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.

[0113] Flame retardants

[0114] In a preferred embodiment, at least one flame retardant is used in the polymer compositions in addition to the polyester and the colorant. Preferred flame retardants are mineral flame retardants, nitrogen-containing flame retardants, or phosphorus-containing flame retardants.

[0115] 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, which is 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. Magnesium hydroxide types suitable according to the invention as a mineral flame retardant are, for example, Magnifin® H5IV from Martinswerk GmbH, Bergheim, Germany, or Hidromag® Q2015 TC from Penoles, Mexico City, Mexico.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] A preferred organic metal phosphinate is aluminum tris(diethylphosphinate). A preferred inorganic metal hypophosphite is aluminum hypophosphite.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] Additive

[0125] In a preferred embodiment, at least one additive is used in the polymer compositions in addition to the polyester 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.

[0126] 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 polyester.

[0127] 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, each based on 100 parts by mass of polyester.

[0128] 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.

[0129] 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.

[0130] Preferred plasticizers to be used as additives are dioctyl phthalate, dibenzyl phthalate, butylbenzyl phthalate, hydrocarbon oils or N-(n-butyl)benzenesulfonamide.

[0131] Elastomer modifiers preferably used as additives include one or more graft polymers of

[0132] E.1 5 to 95% by weight, preferably 30 to 90% by weight, of at least one vinyl monomer and

[0133] E.2 95 to 5 wt.%, preferably 70 to 10 wt.% of one or more

[0134] 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.

[0135] Monomers for E.1 are preferably mixtures of

[0136] 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

[0137] E.1.2 1 to 50 wt.% vinyl cyanides, in particular unsaturated nitriles such as acrylonitrile and methacrylonitrile, and / or (meth)acrylic acid (Ci-Cs) alkyl esters, in particular

[0138] 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.

[0139] 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.

[0140] Suitable graft bases E.2 for the graft polymers used in the elastomer modifiers include diene rubbers, EPDM rubbers (i.e., those based on ethylene / propylene and optionally diene), as well as acrylate, polyurethane, silicone, chloroprene, and ethylene / vinyl acetate rubbers. EPDM stands for ethylene-propylene-diene rubber.

[0141] Preferred grafting 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 further 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.

[0142] 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.

[0143] Glass fiber reinforced electromobility components The invention preferably relates to electromobility components based on polymer compositions in which, in addition to the polyester 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.

[0144] In a preferred embodiment, the present invention relates to electromobility components based on polymer compositions in which, in addition to the polyester 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.

[0145] 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 polyester.

[0146] 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.

[0147] 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 polyester 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 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 polybutylene terephthalate is used as the polyester.

[0148] Most preferably, the starting materials in the polymer compositions are present in a ratio of 100 parts by mass of at least one polyester, preferably at least polybutylene terephthalate, 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.

[0149] Proceedings

[0150] The invention also 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 polyester 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

[0151] A) per 100 parts by mass of at least one polyester, preferably polybutylene terephthalate,

[0152] 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.

[0153] 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.

[0154] 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.

[0155] 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 polyester. The invention very 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 polyester and a colorant to form polymer compositions, extruding them into strands, cooling them to granulatability, 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

[0156] A) per 100 parts by mass of at least one polyester, preferably

[0157] Polybutylene terephthalate,

[0158] B) 0.01 to 5 parts by mass of colorant with a concentration determined according to ISO 13320 by means of

[0159] Laser diffractometry to determine average particle size d50 in the range of 1 to 12 pm 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 of 1 : 1 : 0.8 - 1 .5 to 1 : 1 .5 : 0.8 - 1 .5 and

[0160] 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 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.

[0161] 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.

[0162] 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.

[0163] Preferred use in glass fiber reinforced polyesters

[0164] 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, very particularly preferably in the range of 2 to 7 mm, are used per 100 parts by mass of polyester.

[0165] 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 as a colorant for obtaining color-streak-reduced polyester-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 0.01 to 5 parts by mass of the isomer mixture and 1 to 150 parts by mass, preferably 5 to 80 parts by mass, are added to 100 parts by mass of at least one polyester, preferably polybutylene terephthalate,particularly preferably 10 to 50 parts by mass of glass fibers with an average initial length 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, to be determined by means of laser diffraction particle size analysis (laser granulometric measurement or laser diffractometry) according to ISO 13320, are used.

[0166] 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 polyester-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 color number according to DIN EN ISO 11664-4 to be determined 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, 0.01 to 100 parts by mass of at least one polyester, preferably polybutylene terephthalate,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.

[0167] 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 to obtain color streak-free polyester-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 outside the above isomer ratio, wherein 0.01 to 5 mass parts of the isomer mixture and 1 to 150 mass parts,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.

[0168] 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 polyester-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 per 100 parts by mass of at least one polyester, preferably polybutylene terephthalate,0.01 to 5 parts by mass of the isomer mixture 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.

[0169] 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.

[0170] Examples

[0171] To demonstrate the improvements in properties described in the invention, corresponding polyester-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 to pelletizable condition, 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 form standard test specimens for the respective tests.

[0172] 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 not only separates substances but also identifies and quantifies them (determines the exact concentration) using standards. See: https: / / de.wikipedia.org / wiki / Hochleistungsfl%C3%BCssigkeitschromatographie

[0173] Educts:

[0174] Component A) Polyester = Polybutylene terephthalate Pocan® B1505, Lanxess

[0175] Germany GmbH, Cologne, Germany

[0176] 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

[0177] 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 the ratio 1 : 1, 2 : 1, prepared according to

[0178] Synthesis procedure 2

[0179] Table I

[0180] 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 polybutylene terephthalate 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 (+).

[0181] Synthesis procedure 1

[0182] 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)

[0183] 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.

[0184] Synthesis procedure 2

[0185] 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)

[0186] 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.

[0187] Determination of (color) brilliance according to DIN EN ISO 11664-4

[0188] 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, polybutylene terephthalate 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 230 to 270°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 polyester and one 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 of colorant per 100 mass parts of polyester present.

2. Electromobility components according to claim 1, characterized in that polyester stands for poly-C2-C-alkylene terephthalate or for polycarbonate, in particular for polybutylene terephthalate.

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 polyester.

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 polyester 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 polyester.

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, extrusion-molded, or blow-molded components, preferably injection-molded components.

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 polyester 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 polyester, preferably at least one poly-C2-C -alkylene terephthalate or at least one polycarbonate, in particular polybutylene terephthalate, 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 a laser diffraction Particle size analysis according to ISO 13320 can be used with an average initial length in the range of 1 to 50 mm, preferably 1 to 150 parts by mass of glass fibers to 100 parts by mass of polyester.

12. 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 polyester-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 the polymer compositions contain 0.01 to 5 parts by mass of colorant per 100 parts by mass of at least one polyester 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 polyester.

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 polyester, preferably poly-C2-C4-alkylene terephthalate or polycarbonate, in particular polybutylene terephthalate.

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