Polymer composition with flame retardant

Abstract

Herein a specific polymer composition with flame retardant is described.

Description

[0001] Polymer composition with flame retardant

[0002] Description

[0003] It is well-known that the addition of red phosphorous to polymers leads to an increase of protection against fire. However, under specific conditions, for example high temperature, moisture, presence of alkali metals or oxygen, red phosphorous tends to generate undesirable products such as phosphines and acids of 1- to 5-valent phosphorus which might be toxic, bad smelling and decrease the tracking resistance. For this reason, the object of the present invention is to provide an improved polymer composition, particularly a polymer composition which exhibits: improved fire resistance, improved stability, improved stabilization of the red phosphorous, less vulnerable to generate undesirable products containing phosphorous, reduced emission of phosphorus containing compounds, improved tracking resistance, improved homogeneity, reduced pack size, improved mechanical properties, and simplified production feasibility.

[0004] This object is at least partially solved by a polymer composition PC1 , comprising, preferably consisting of: a) a polymer P1 , b) red phosphorus RP1 , c) a metal carbonate MC1 , d) optionally a copper compound CC1 , e) optionally a borate B1 , and f) optionally one or more additive(s) A1 ; wherein a metal of the metal carbonate MC1 is selected from an alkali metal, an alkaline earth metal, a transition metal, an inner transition metal, and / or a mixture thereof.

[0005] The above-described object is also at least partially solved by a use of the polymer composition PC1 described herein for the production of a polymer product PP1 or in a recycling method.

[0006] The above-described object is also at least partially solved by a polymer product PP1 comprising the polymer composition PC1 described herein.

[0007] The above-described object is also at least partially solved by a use of the polymer product PP1 described herein in a recycling method

[0008] This object is also at least partially solved by a method comprising the following step: mixing a mixture M1 to obtain a polymer composition PC 1 , preferably the polymer composition PC1 described herein, wherein the mixture M1 comprises: a) a polymer P1 , b) red phosphorus RP1 , c) a metal carbonate MC 1 , d) optionally a copper compound CC1 , e) optionally a borate B1 , and f) optionally one or more additive(s) A1 ; wherein a metal of the metal carbonate MC1 is selected from an alkali metal, an alkaline earth metal, a transition metal, an inner transition metal, and / or a mixture thereof.

[0009] In a preferred embodiment, the metal carbonate MC1 and the copper compound CC1 and / or the borate B1 are mixed first and then added to the other components of the mixture M1.

[0010] In a preferred embodiment, the method comprises the following step: pelletizing the polymer composition PC1 .

[0011] In a preferred embodiment, the method comprises the following step: converting, preferably by injection molding, the polymer composition PC1 to obtain a polymer product PP1.

[0012] In a preferred embodiment, the method comprises the following step: recycling the polymer composition PC1 and / or polymer product PP1 .

[0013] A person skilled in the art knows several technics, like injection molding, to convert a polymer composition in a specific form, i.e. a polymer product. Herein a polymer product is for example a part of a car or a connector. In addition, a person skilled in the art knows several recycling methods, e.g., gasification, pyrolyzation and depolymerization.

[0014] The above-described object is also at least partially solved by a use of metal carbonate MC1 in a polymer composition PC1 comprising a polymer P1 and red phosphorus RP1 , wherein a metal of the metal carbonate MC1 is selected from an alkali metal, an alkaline earth metal, a transition metal, an inner transition metal, and / or a mixture thereof, preferably for the stabilization of the red phosphorus RP1 .

[0015] The polymer P1 is not particularly specified. In a preferred embodiment, the polymer P1 is a thermoplastic polymer, more preferably the polymer P1 is a polyamide, preferably polyamide 6, polyamide 66, PA56, PA6T / 6, PA6I / 6T, PA610, PA9T, PA6T / 66, PA66 / 6T, PA5T, PA10T and / or a mixture thereof, more preferably polyamide 66 and / or PA6T / 6. Thus, the homogeneity of the polymer composition is improved. The red phosphorous might coated or uncoated. In a preferred embodiment, the red phosphorus RP1 is uncoated. Thus, the production feasibility is simplified.

[0016] According to the invention, the metal of the metal carbonate MC1 is selected from an alkali metal, an alkaline earth metal, a transition metal, an inner transition metal, and / or a mixture thereof. In a preferred embodiment, the metal of the metal carbonate MC1 is selected from a transition metal, preferably zinc. Thus, the polymer composition is less vulnerable to generate undesirable products containing phosphorous and the emission of phosphorus containing compounds is reduced. If the polymer composition comprises further the copper compound CC1 , the borate B1 or both, the emission of phosphorus containing compounds is further reduced.

[0017] In a preferred embodiment, the metal of the metal carbonate MC1 is selected from a lanthanide, an actinide, and / or a mixture thereof, preferably a lanthanide, more preferably cerium carbonate and / or lanthanum carbonate, more preferably lanthanum carbonate. Thus, the polymer composition is less vulnerable to generate undesirable products containing phosphorous and the emission of phosphorus containing compounds is reduced. If the polymer composition comprises further the copper compound CC1, the borate B1 or both, the emission of phosphorus containing compounds is further reduced.

[0018] In a preferred embodiment, the metal of the metal carbonate MC1 is selected from an alkali metal, preferably lithium, sodium, potassium, and / or a mixture thereof, more preferably sodium. Thus, the polymer composition is less vulnerable to generate undesirable products containing phosphorous and the emission of phosphorus containing compounds is reduced. If the polymer composition comprises further the copper compound CC1 , the borate B1 or both, the emission of phosphorus containing compounds is further reduced.

[0019] In a preferred embodiment, the metal of the metal carbonate MC1 is selected from an alkaline earth metal, preferably magnesium, calcium, strontium, barium, more preferably calcium. Thus, the polymer composition is less vulnerable to generate undesirable products containing phosphorous and the emission of phosphorus containing compounds is reduced. If the polymer composition comprises further the copper compound CC1 , the borate B1 or both, the emission of phosphorus containing compounds is further reduced.

[0020] In a preferred embodiment, the oxidation state of the metal in the metal carbonate MC1 is 3+and / or 4+, preferably 3+. Thus, the bulk density is increased.

[0021] In a preferred embodiment, the metal carbonate MC1 is selected from lanthanum carbonate, cerium carbonate, calcium carbonate, sodium carbonate, zinc carbonate, and / or a mixture thereof; preferably lanthanum carbonate, cerium carbonate, calcium carbonate, sodium carbonate, and / or a mixture thereof; more preferably lanthanum carbonate, cerium carbonate, calcium carbonate, and / or a mixture thereof; more preferably lanthanum carbonate, cerium carbonate, and / or a mixture thereof; more preferably lanthanum carbonate and cerium carbonate; more preferably lanthanum carbonate. Thus, the polymer composition is less vulnerable to generate undesirable products containing phosphorous and the emission of phosphorus containing compounds is reduced. If the polymer composition comprises further the copper compound CC1 , the borate B1 or both, the emission of phosphorus containing compounds is further reduced. In addition, the bulk density is increased.

[0022] In a preferred embodiment, the metal of the metal carbonate MC1 is selected from an alkali metal, an alkaline earth metal, an inner transition metal, and / or a mixture thereof; preferably an alkaline earth metal, an inner transition metal, and / or a mixture thereof; preferably the metal of the metal carbonate MC1 is an inner transition metal. Thus, the polymer composition is less vulnerable to generate undesirable products containing phosphorous and the emission of phosphorus containing compounds is reduced. If the polymer composition comprises further the copper compound CC1 , the borate B1 or both, the emission of phosphorus containing compounds is further reduced.

[0023] In a preferred embodiment, the metal carbonate MC1 is not sodium carbonate, preferably not sodium carbonate and / or zinc carbonate. Thus, the bulk density is increased.

[0024] According to the invention, the polymer composition may comprise the copper compound CC1. In a preferred embodiment, the polymer composition PC1 and / or the mixture M1 comprises a copper compound CC1 , preferably wherein the copper compound CC1 and the metal carbonate MC1 are not the same. Thus, the emission of phosphorus containing compounds is reduced.

[0025] In a preferred embodiment, the copper in the copper compound CC1 exhibits the oxidation state 1+, more preferably the polymer composition PC1 and / or the mixture M1 comprises a cooper halide, preferably copper iodide (Cui), and / or copper oxide (Cu2O), preferably copper oxide (Cu2O). Thus, the emission of phosphorus containing compounds is reduced.

[0026] In a preferred embodiment, the polymer composition PC1 and / or the mixture M1 does / do not comprise and / or the copper compound CC1 is not malachite and / or azurite, more preferably any copper carbonate and / or the polymer composition PC1 and / or the mixture M1 does / do not comprise and / or the copper compound CC1 is not copper borate. Thus, the properties of the polymer composition are improved.

[0027] According to the invention, the polymer composition may comprise the borate B1. In a preferred embodiment, the polymer composition PC1 and / or the mixture M1 comprises a borate B1, preferably wherein the copper compound CC1 and the borate B1 are not the same, more preferably the borate B1 is a metal borate, preferably zinc borate, more preferably ZnO B203'2H20, 2ZnO3B203(CAS: 12767-90-7), 2ZnO3'3B2O3'3.5H2O (CAS: 138265-88-0), and / or 2ZnO-3B2O3-3.5H2O (Zn[B3O4(OH)3]), more preferably 2ZnO-3B2O3(CAS: 12767-90-7). Thus, the emission of phosphorus containing compounds is reduced. Especially, if the polymer composition comprises the red phosphorus RP1 , the metal carbonate MC1 , the copper compound CC1 and the borate B1 , these compounds act together and thus, the emission of phosphorus containing compounds is significantly reduced. According to the invention, the polymer composition may comprise the one or more additive(s) A1. In a preferred embodiment, the polymer composition PC1 and / or the mixture M1 comprises one or more additive(s) A1, more preferably the one or more additive(s) A1 is / are selected from fiber(s), antioxidating agent(s), stabilizer(s), lubricant(s), mineral(s), chain extender(s), impact modifier(s), colorant(s), pigment(s), soot(s), talc(s), acid scavenger(s), and / or a mixture thereof, preferably talc; preferably talc powder; glass fiber(s); preferably chopped glass fiber(s); N,N'- hexamethylenebis-3,5-di-tert-butyl-4-hydroxyhydrocinnamide, calcium stearate, carbon black, and / or a mixture thereof.

[0028] The content of the polymer P1 in the polymer composition PC1 and / or the mixture M1 is not particularly limited. Preferably, the polymer composition PC1 and / or the mixture M1 comprise(s) 1.00 weight- % or more and 99.99 weight- % or less, preferably 10.00 weight- % or more and 99.00 weight- % or less, more preferably 20.00 weight- % or more and 90.00 weight- % or less, more preferably 30.00 weight-% or more and 80.00 weight- % or less, more preferably 40.00 weight-% or more and 70.00 weight-% or less, more preferably 50.00 weight-% or more and 60.00 weight-% or less, of the polymer P1. Thus, the properties, especially the mechanical properties of the polymer composition are improved.

[0029] The content of the red phosphorous in the polymer composition PC1 and / or the mixture M1 is not particularly limited. Preferably, the polymer composition PC1 and / or the mixture M1 comprise(s) 0.01 weight-% or more and 40.00 weight- % or less, preferably 0.1. weight-% or more and 30.00 weight-% or less, more preferably 1.00 weight-% or more and 20.00 weight-% or less, more preferably 3.00 weight-% or more and 18.00 weight-% or less, more preferably 7.00 weight-% or more and 15.00 weight-% or less, more preferably 10.00 weight-% or more and 12.00 weight-% or less, of the red phosphorus RP1 . Thus, the fire resistance is improved.

[0030] The content of the metal carbonate MC1 in the polymer composition PC1 and / or the mixture M1 is not particularly limited. Preferably, the polymer composition PC1 and / or the mixture M1 comprise(s) 0.01 weight-% or more and 10.00 weight-% or less, preferably 0.05 weight-% or more and 9.00 weight-% or less, more preferably 0.07 weight-% or more and 8.00 weight-% or less, more preferably 0.09 weight-% or more and 7.00 weight-% or less, more preferably 0.10 weight-% or more and 6.00 weight-% or less, more preferably 0.20 weight-% or more and 5.00 weight-% or less, more preferably 0.30 weight-% or more and 4.00 weight-% or less, more preferably 0.40 weight-% or more and 3.00 weight- % or less, more preferably 0.50 weight-% or more and 2.00 weight-% or less, more preferably 0.60 weight-% or more and 1 .00 weight-% or less, more preferably 0.70 weight-% or more and 0.90 weight-% or less, of the metal carbonate MC1. Thus, the emission of phosphorus containing compounds is reduced.

[0031] The content of the copper compound CC1 in the polymer composition PC1 and / or the mixture M1 is not particularly limited. Preferably, the polymer composition PC1 and / or the mixture M1 comprise(s) 0.01 weight-% or more and 5.00 weight-% or less, preferably 0.02 weight-% or more and 4.00 weight-% or less, more preferably 0.03 weight-% or more and 3.00 weight-% or less, more preferably 0.04 weight-% or more and 2.00 weight-% or less, more preferably 0.05 weight-% or more and 1 .50 weight-% or less, more preferably 0.06 weight-% or more and 1 .00 weight-% or less, more preferably 0.07 weight- % or more and 0.80 weight- % or less, more preferably 0.08 weight- % or more and 0.60 weight- % or less, more preferably 0.09 weight- % or more and 0.40 weight- % or less, more preferably 0.10 weight- % or more and 0.20 weight- % or less, of the copper compound CC1. Thus, the emission of phosphorus containing compounds is reduced.

[0032] The content of the borate B1 in the polymer composition PC1 and / or the mixture M1 is not particularly limited. Preferably, the polymer composition PC1 and / or the mixture M1 comprise(s) 0.01 weight- % or more and 5.00 weight- % or less, preferably 0.02 weight- % or more and 4.00 weight- % or less, more preferably 0.03 weight- % or more and 3.00 weight- % or less, more preferably 0.04 weight- % or more and 2.00 weight- % or less, more preferably 0.05 weight- % or more and 1 .50 weight- % or less, more preferably 0.06 weight- % or more and 1 .00 weight- % or less, more preferably 0.07 weight- % or more and 0.80 weight- % or less, more preferably 0.08 weight- % or more and 0.60 weight- % or less, more preferably 0.09 weight- % or more and 0.40 weight- % or less, more preferably 0.10 weight- % or more and 0.20 weight- % or less of the borate B1 . Thus, the emission of phosphorus containing compounds is reduced.

[0033] The content of the one or more additive(s) A1 in the polymer composition PC1 and / or the mixture M1 is not particularly limited. Preferably, the polymer composition PC1 and / or the mixture M1 comprise(s) 0.01 weight- % or more and 99 weight- % or less, preferably 1.00 weight- % or more and 80 weight- % or less, more preferably 10.00 weight- % or more and 60 weight- % or less, more preferably 20.00 weight- % or more and 50 weight- % or less, more preferably 30.00 weight- % or more and 40 weight- % or less of the one or more additive(s) A1. Thus, the properties, especially the mechanical properties of the polymer composition are improved.

[0034] In a preferred embodiment, the sum of the weight- % of a) to c), preferably a) to f) is 100%. Thus, the emission of phosphorus containing compounds is reduced.

[0035] In a preferred embodiment, the polymer composition PC1 and / or the mixture M1 comprise(s), preferably consist(s) of: a) 1 .00 weight- % or more and 99.98 weight- % or less of polymer P1 , b) 0.01 weight- % or more and 40.0. weight- % or less of red phosphorus RP1 , c) 0.01 weight- % or more and 10.00 weight- % or less of metal carbonate MC1 , d) 0 weight- % or more and 5.00 weight- % or less of copper compound CC1 , e) 0 weight- % or more and 5.00 weight- % or less of borate B1 , and f) 0 weight- % or more and 98.98 weight- % or less of one or more additive(s) A1 ; preferably wherein the sum of the weight- % of a) to f) is 100%; more preferably the polymer composition PC1 and / or the mixture M1 comprise(s), preferably consist(s) of: a) 1 .00 weight- % or more and 99.95 weight- % or less of polymer P1 , b) 0.01 weight- % or more and 40.0. weight- % or less of red phosphorus RP1 , c) 0.01 weight- % or more and 10.00 weight- % or less of metal carbonate MC1 , d) 0.01 weight- % or more and 5.00 weight- % or less of copper compound CC1 , e) 0.01 weight- % or more and 5.00 weight- % or less of borate B1, and f) 0.01 weight- % or more and 98.96 weight- % or less of one or more additive(s) A1 ; preferably wherein the sum of the weight- % of a) to f) is 100%.

[0036] Thus, the properties, especially the mechanical properties of the polymer composition and the fire resistance are improved.

[0037] In a preferred embodiment, a ratio A / B in the polymer composition PC1 and / or the mixture M1 is 1 or more and 20 or less, preferably 3 or more and 15 or less, more preferably 5 or more and 12 or less, more preferably 8 or more and 9 or less; wherein A is the content of the red phosphorus RP1 in the polymer composition PC1 or mixture M1 in weight-%, and wherein B is content of the metal carbonate MC1 in the polymer composition PC1 or mixture M1 in weight-%.

[0038] Thus, the fire resistance is improved.

[0039] In a preferred embodiment, a ratio B / C in the polymer composition PC1 and / or the mixture M1 is 1 or more and 20 or less, preferably 3 or more and 15 or less, more preferably 5 or more and 12 or less, more preferably 7 or more and 9 or less; wherein B is the content of the metal carbonate MC1 in the polymer composition PC1 or mixture M1 in weight-%, and wherein C is content of the copper compound CC1 in the polymer composition PC1 or mixture M1 in weight-%.

[0040] Thus, the emission of phosphorus containing compounds is reduced and the fire resistance is improved.

[0041] In a preferred embodiment, the polymer composition PC1 and / or the polymer product PP1 exhibit(s) a V-0 in the UL 94 standard test using a test specimen having a thickness of 0.8 mm. If this parameter is fulfilled, the fire resistance is improved and thus, the area of application of the polymer composition is increased.

[0042] In a preferred embodiment, the polymer composition PC1 and / or the polymer product PP1 exhibit(s) a V-0 in the UL 94 standard test using a test specimen having a thickness of 1.6 mm. If this parameter is fulfilled, the fire resistance is improved and thus, the area of application of the polymer composition is increased.

[0043] In a preferred embodiment, the polymer composition PC1 and / or the polymer product PP1 passes the GWFI test at 960°C using a test specimen having a thickness of 0.8 mm. If this parameter is fulfilled, the fire resistance is improved and thus, the area of application of the polymer composition is increased.

[0044] In a preferred embodiment, the polymer composition PC1 and / or the polymer product PP1 passes the GWFI test at 960°C using a test specimen having a thickness of 1 .5 mm. If this parameter is fulfilled, the fire resistance is improved and thus, the area of application of the polymer composition is increased.

[0045] In a preferred embodiment, the polymer composition PC1 and / or the polymer product PP1 exhibit(s) a P-emission per test specimen of 2000 pg or less, preferably 1000 pg or less, more preferably 500 pg or less, more preferably 500 pg or less, more preferably 250 g or less, more preferably 200 pg or less, more preferably 175 pg or less, more preferably 150 pg or less, more preferably 100 pg or less, more preferably 75 pg or less, more preferably 50 pg or less, more preferably 40 pg or less, more preferably 30 pg or less, more preferably 20 pg or less, more preferably 10 pg or less, more preferably 9 pg or less, more preferably 8 pg or less, more preferably 7 pg or less, more preferably 6 pg or less, more preferably 5 pg or less. If this parameter is fulfilled, the tracking resistance is improved.

[0046] In a preferred embodiment, the polymer composition PC1 and / or the polymer product PP1 exhibit(s) improved fire resistance, improved stability, improved stabilization of the red phosphorous, less vulnerable to generate undesirable products containing phosphorous, reduced emission of phosphorus containing compounds, improved tracking resistance, improved homogeneity, reduced pack size, improved mechanical properties, and / or, preferably and, simplified production feasibility. If this parameter is fulfilled, the area of application of the polymer composition is increased.

[0047] In a preferred embodiment, the polymer composition PC1 and / or the polymer product PP1 exhibit(s), a bulk density according to DIN ISO 697 of 580 g / L or more, preferably 590 g / L or more, more preferably 600 g / L or more, more preferably 605 g / L or more, more preferably 610 g / L or more, more preferably 620 g / L or more, more preferably 630 g / L or more, more preferably 640 g / L or more, more preferably 650 g / L or more; and / or the polymer composition PC1 and / or the polymer product PP1 exhibit(s), a bulk density according to DIN ISO 697 of 700 g / L or less, preferably 690 g / L or less, more preferably 680 g / L or less, more preferably 670 g / L or less, more preferably 660 g / L or less, more preferably 650 g / L or less, more preferably 640 g / L or less, more preferably 630 g / L or less. If this parameter is fulfilled, the pack size is reduced.

[0048] In a preferred embodiment, the polymer composition PC1 and / or the polymer product PP1 exhibit(s) a Young's modulus of 4.00x103MPa or more, preferably 5.00x103MPa or more, more preferably 6.00x103MPa or more, more preferably 7.00x103MPa or more, more preferably 8.00x103MPa or more, more preferably 8.50x103MPa or more, more preferably 8.60x103MPa or more, more preferably 8.70x103MPa or more, more preferably 8.80x103MPa or more, more preferably 8.90x103MPa or more, more preferably 9.00x103MPa or more, more preferably 9.10x103MPa or more, more preferably 9.20x103MPa or more, more preferably 9.30x103MPa or more, more preferably 9.40x103MPa or more, more preferably 1.00x104MPa or more, more preferably 1 .10x104MPa or more, more preferably 1.20x104MPa or more, more preferably 1.30x104MPa or more, more preferably 1.40x104MPa or more, more preferably 1.50x104MPa or more, more preferably 1.60x104MPa or more, more preferably 1.70x104MPa or more; and / or the polymer composition PC1 and / or the polymer product PP1 exhibit(s) a Young's modulus of 1 .80x104MPa or less, preferably 1 .60x104MPa or less, more preferably 1 .40x104MPa or less, more preferably 1 .20x104MPa or less, more preferably 1 .00x104MPa or less, more preferably 9.50x103MPa or less, more preferably 9.40x103MPa or less, more preferably 9.30x103MPa or less, more preferably 9.20x103MPa or less, more preferably 9.10x103MPa or less, more preferably 9.00x103MPa or less, more preferably 8.90x103MPa or less, more preferably 8.80x103MPa or less, more preferably 8.70x103MPa or less, more preferably 8.60x103MPa or less, more preferably 8.00x103MPa or less, more preferably 7.00x103MPa or less, more preferably 6.50x103MPa or less, more preferably 6.00x103MPa or less.. Thus, the mechanical properties are improved.

[0049] In a preferred embodiment, a content of CaCC in the polymer composition PC1 and / or the polymer product PP1 is 5 weight- % or less, preferably 4 weight- % or less, more preferably 3 weight- % or less, more preferably 2 weight- % or less, more preferably 1 weight- % or less, more preferably wherein the polymer composition PC1 and / or the polymer product PP1 does / do not contain CaCOa.

[0050] In a preferred embodiment, a content of MgCC in the polymer composition PC1 and / or the polymer product PP1 is 5 weight- % or less, preferably 4 weight- % or less, more preferably 3 weight- % or less, more preferably 2 weight- % or less, more preferably 1 weight- % or less, more preferably wherein the polymer composition PC1 and / or the polymer product PP1 does / do not contain MgCC .

[0051] Methods and Definitions

[0052] If not further specified, preferably the following methods are used, and definitions apply.

[0053] Bulk density:

[0054] The individual components of the composition or a crushed polymer product to be investigated were feed and mixed in a ZSK 26 (Berstorff) twin-screw extruder with throughput 20 kg / h and a flat temperature profile from 270°C to 290°C, extruded in the form of strand, cooled until pelletizable, and pelletized in a pelletizer to obtain pellets having a size of 3 to 5 mm. The bulk density of these pellets is determined based on DIN ISO 697.

[0055] Viscosity number VN: The viscosity number (VN) was measured in 0.5 weight- % solution in 96 weight- % sulfuric acid at 25 °C according to ISO 307. The test specimens for the study set in Table 1 were injection-molded in an Arburg 4200 injection-molding machine at a melt temperature from 270 °C to 290 °C and mold temperature of about 80 °C.

[0056] The test specimens for the stress tests (Young's modulus, breaking stress and elongation at break) are produced and tested in accordance with ISO 527-271993, and the test specimens for the impact resistance tests (Charpy impact strength and Charpy notched impact strength) are produced and tested in accordance with ISO 179-2 / 1 eA.

[0057] Bending temperature: The temperature of deflection under load (heat distortion temperature - HDT) is determined in accordance with DIN 75.

[0058] Comparative Tracking Index: The comparative tracking index (CTI) is determined in accordance with DIN ISO 60112.

[0059] MVR: The MVR tests are carried out in accordance with ISO1133. UL 94 test d= 0.8mm and UL 94 test d= 1.6mm: The flame retardancy of the molding compositions is determined firstly by the UL 94 V method (Underwriters Laboratories Inc. Standard of Safety, "Test for Flammability of Plastic Materials for Parts in Devices and Appliances”, p. 14 to p. 18 Northbrook 1998). The thickness of the test specimen is either 0.8 mm or 1.6 mm.

[0060] GWFI 0.8 mm and GWFI 1.5mm: Glow - wire flammability index (GWFI) is tested in accordance with DIN EN 60695- 2-12 on plaques. The GWFI test is a general suitability test for plastics in contact with parts that carry an electrical potential. The temperature determined is the highest at which one of the following conditions is met in three successive tests: (a) no ignition of the specimen or (b) afterflame time or afterglow time 30 s after end of exposure to the glow wire, and no ignition of the underlay. The thickness of the test specimen is either 0.8 mm or 1 .5 mm.

[0061] P-emission: A plastics specimen (125x12.5x1.6 mm) is halved, and each half is placed in a 10 ml glass beaker. A silver contact material (10x50x0.125 mm) is placed in a short test tube. The three specimens are then placed in a 100 ml screw-cap bottle, 5 ml of water is added, and the sealed system is placed in a drying oven at 70° C. After 28 days, the test tube is removed and filled to the top with water, and the entire contents are placed in a glass beaker. 5 ml of cone, hydrochloric acid are added to this, and the mixture is evaporated almost to dryness. The metal specimen is then removed and rinsed with water; 1 ml of sulfuric acid is admixed with the residue, and the mixture is again evaporated almost to dryness. 20 ml of water is then used for dilution, 4 ml of 5% potassium peroxodisulfate solution are added, and the mixture is heated for 30 minutes. Phosphorus is then determined photometrically by using molybdenum blue, in pg of phosphorus / plastic specimen (pg P / PS (PS = plastic specimen)).

[0062] In summary, embodiments and preferred embodiments are the following embodiments. The scope of protection is defined by the claims. The combination of two or more embodiments, e.g. 3, 4 or 8 embodiments is further preferred. Definitions and general statements herein preferably also apply for the following embodiments and preferred embodiments. In addition, if not stated otherwise, definitions and general statements herein referring to the polymer composition PC1 also apply for the polymer product PP1 , method and / or use, and vice versa. Preferably, the steps described in the embodiments below are conducted, if present in the claims, in the order of the embodiments below.

[0063] 1 . Polymer composition PC1 , comprising, preferably consisting of: a) a polymer P1 , b) red phosphorus RP1 , c) a metal carbonate MC1 , d) optionally a copper compound CC1 , e) optionally a borate B1 , and f) optionally one or more additive(s) A1 ; wherein a metal of the metal carbonate MC1 is selected from an alkali metal, an alkaline earth metal, a transition metal, an inner transition metal, and / or a mixture thereof. 2. Use of the polymer composition PC1 according to any one of the preceding embodiments for the production of a polymer product PP1 or in a recycling method.

[0064] 3. Polymer product PP1 comprising the polymer composition PC1 according to any one of the preceding embodiments.

[0065] 4. Use of the polymer product PP1 according to any one of the preceding embodiments in a recycling method.

[0066] 5. Method comprising the following step: mixing a mixture M1 to obtain a polymer composition PC1, preferably the polymer composition PC1 according to any one of the preceding embodiments, wherein the mixture M1 comprises: a) a polymer P1 , b) red phosphorus RP1 , c) a metal carbonate MC1 , d) optionally a copper compound CC1 , e) optionally a borate B1 , and f) optionally one or more additive(s) A1 ; wherein a metal of the metal carbonate MC1 is selected from an alkali metal, an alkaline earth metal, a transition metal, an inner transition metal, and / or a mixture thereof.

[0067] 6. Method according to any one of the preceding embodiments, wherein the metal carbonate MC1 and the copper compound CC1 and / or the borate B1 are mixed first and then added to the other components of the mixture M1.

[0068] 7. Method, preferably according to any one of the preceding embodiments, comprising the following step: pelletizing the polymer composition PC1 .

[0069] 8. Method, preferably according to any one of the preceding embodiments, comprising the following step: converting, preferably by injection molding, the polymer composition PC1 to obtain a polymer product PP1.

[0070] 9. Method, preferably according to any one of the preceding embodiments, comprising the following step: recycling the polymer composition PC1 and / or polymer product PP1 .

[0071] 10. Use of metal carbonate MC1 in a polymer composition PC1 comprising a polymer P1 and red phosphorus RP1, wherein a metal of the metal carbonate MC1 is selected from an alkali metal, an alkaline earth metal, a transition metal, an inner transition metal, and / or a mixture thereof, preferably for the stabilization of the red phosphorus RP1. 11. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer P1 is a thermoplastic polymer.

[0072] 12. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer P1 is a polyamide, preferably polyamide 6, polyamide 66, PA56, PA6T / 6, PA6I / 6T, PA610, PA9T, PA6T / 66, PA66 / 6T, PA5T, PA10T and / or a mixture thereof, more preferably polyamide 66 and / or PA6T / 6.

[0073] 13. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the red phosphorus RP1 is uncoated.

[0074] 14. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the metal of the metal carbonate MC1 is selected from a transition metal, preferably zinc.

[0075] 15. Polymer composition PC1 , polymer product PP1, method and / or use according to any one of the preceding embodiments, wherein the metal of the metal carbonate MC1 is selected from a lanthanide, an actinide, and / or a mixture thereof, preferably a lanthanide, more preferably cerium carbonate and / or lanthanum carbonate, more preferably lanthanum carbonate.

[0076] 16. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the metal of the metal carbonate MC1 is selected from an alkali metal, preferably lithium, sodium, potassium, and / or a mixture thereof, more preferably sodium.

[0077] 17. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the metal of the metal carbonate MC1 is selected from an alkaline earth metal, preferably magnesium, calcium, strontium, barium, more preferably calcium.

[0078] 18. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the oxidation state of the metal in the metal carbonate MC1 is 3+and / or 4+, preferably 3+.

[0079] 19. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the metal carbonate MC1 is selected from lanthanum carbonate, cerium carbonate, calcium carbonate, sodium carbonate, zinc carbonate, and / or a mixture thereof; preferably lanthanum carbonate, cerium carbonate, calcium carbonate, sodium carbonate, and / or a mixture thereof; more preferably lanthanum carbonate, cerium carbonate, calcium carbonate, and / or a mixture thereof; more preferably lanthanum carbonate, cerium carbonate, and / or a mixture thereof; more preferably lanthanum carbonate and cerium carbonate; more preferably lanthanum carbonate.

[0080] 20. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the metal of the metal carbonate MC1 is selected from an alkali metal, an alkaline earth metal, an inner transition metal, and / or a mixture thereof; preferably an alkaline earth metal, an inner transition metal, and / or a mixture thereof; preferably wherein the metal of the metal carbonate MC1 is an inner transition metal.

[0081] 21. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the metal carbonate MC1 is not sodium carbonate, preferably not sodium carbonate and / or zinc carbonate.

[0082] 22. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the mixture M1 comprises a copper compound CC1 , preferably wherein the copper compound CC1 and the metal carbonate MC1 are not the same.

[0083] 23. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the copper in the copper compound CC1 exhibits the oxidation state 1+.

[0084] 24. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the mixture M1 comprises a cooper halide, preferably copper iodide (Cui), and / or copper oxide (CU2O), preferably copper oxide (CU2O).

[0085] 25. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the mixture M1 does / do not comprise and / or the copper compound CC1 is not malachite and / or azurite, more preferably any copper carbonate.

[0086] 26. Polymer composition PC1, polymer product PP1, method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the mixture M1 does / do not comprise and / or the copper compound CC1 is not copper borate.

[0087] 27. Polymer composition PC1 , polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the mixture M1 comprises a borate B1 , preferably wherein the copper compound CC1 and the borate B1 are not the same.

[0088] 28. Polymer composition PC1 , polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the borate B1 is a metal borate, preferably zinc borate, more preferably ZnO-B2O3-2H2O, 2ZnO3B203(CAS: 12767-90-7), 2ZnO3'3B2O3'3.5H2O (CAS: 138265-88-0), and / or 2ZnO'3B2O3'3.5H2O (Zn[B3O4(OH)3]), more preferably 2ZnO-3B2O3 (CAS: 12767-90-7). Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the mixture M1 comprises one or more additive(s) A1. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the one or more additive(s) A1 is / are selected from fiber(s), antioxidating agent(s), stabilizer(s), lubricant(s), mineral(s), chain extender(s), impact modifier(s), colorant(s), pigment(s), soot(s), talc(s), acid scavenger(s), and / or a mixture thereof, preferably talc; preferably talc powder; glass fiber(s); preferably chopped glass fiber(s); N,N'-hexamethylenebis-3,5-di-tert-butyl-4-hydroxyhydrocinnamide, calcium stearate, carbon black, and / or a mixture thereof. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the mixture M1 comprise(s) 1 .00 weight- % or more and 99.99 weight- % or less, preferably 10.00 weight- % or more and 99.00 weight- % or less, more preferably 20.00 weight- % or more and 90.00 weight- % or less, more preferably 30.00 weight- % or more and 80.00 weight- % or less, more preferably 40.00 weight- % or more and 70.00 weight- % or less, more preferably 50.00 weight- % or more and 60.00 weight- % or less, of the polymer P1 . Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the mixture M1 comprise(s) 0.01 weight- % or more and 40.00 weight- % or less, preferably 0.1. weight- % or more and 30.00 weight- % or less, more preferably 1.00 weight- % or more and 20.00 weight- % or less, more preferably 3.00 weight- % or more and 18.00 weight- % or less, more preferably 7.00 weight- % or more and 15.00 weight- % or less, more preferably 10.00 weight- % or more and 12.00 weight- % or less, of the red phosphorus RP1 . Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the mixture M1 comprise(s) 0.01 weight- % or more and 10.00 weight- % or less, preferably 0.05 weight- % or more and 9.00 weight- % or less, more preferably 0.07 weight- % or more and 8.00 weight- % or less, more preferably 0.09 weight- % or more and 7.00 weight- % or less, more preferably 0.10 weight- % or more and 6.00 weight-% or less, more preferably 0.20 weight- % or more and 5.00 weight-% or less, more preferably 0.30 weight-% or more and 4.00 weight-% or less, more preferably 0.40 weight-% or more and 3.00 weight-% or less, more preferably 0.50 weight-% or more and 2.00 weight-% or less, more preferably 0.60 weight-% or more and 1.00 weight-% or less, more preferably 0.70 weight-% or more and 0.90 weight-% or less, of the metal carbonate MC1 . 34. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the mixture M1 comprise(s) 0.01 weight- % or more and 5.00 weight- % or less, preferably 0.02 weight- % or more and 4.00 weight- % or less, more preferably 0.03 weight- % or more and 3.00 weight- % or less, more preferably 0.04 weight- % or more and 2.00 weight- % or less, more preferably 0.05 weight- % or more and 1 .50 weight-% or less, more preferably 0.06 weight- % or more and 1 .00 weight-% or less, more preferably 0.07 weight-% or more and 0.80 weight-% or less, more preferably 0.08 weight-% or more and 0.60 weight-% or less, more preferably 0.09 weight-% or more and 0.40 weight-% or less, more preferably 0.10 weight-% or more and 0.20 weight-% or less, of the copper compound CC1.

[0089] 35. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the mixture M1 comprise(s) 0.01 weight-% or more and 5.00 weight-% or less, preferably 0.02 weight-% or more and 4.00 weight-% or less, more preferably 0.03 weight-% or more and 3.00 weight-% or less, more preferably 0.04 weight-% or more and 2.00 weight-% or less, more preferably 0.05 weight-% or more and 1 .50 weight-% or less, more preferably 0.06 weight-% or more and 1 .00 weight-% or less, more preferably 0.07 weight-% or more and 0.80 weight-% or less, more preferably 0.08 weight-% or more and 0.60 weight-% or less, more preferably 0.09 weight-% or more and 0.40 weight-% or less, more preferably 0.10 weight-% or more and 0.20 weight-% or less of the borate B1.

[0090] 36. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the mixture M1 comprise(s) 0.01 weight-% or more and 99 weight-% or less, preferably 1.00 weight-% or more and 80 weight-% or less, more preferably 10.00 weight-% or more and 60 weight-% or less, more preferably 20.00 weight-% or more and 50 weight-% or less, more preferably 30.00 weight-% or more and 40 weight-% or less of the one or more additive(s) A1 .

[0091] 37. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the sum of the weight-% of a) to c), preferably a) to f) is 100%.

[0092] 38. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the mixture M1 comprise(s), preferably consist(s) of: a) 1 .00 weight-% or more and 99.98 weight-% or less of polymer P1 , b) 0.01 weight-% or more and 40.0. weight-% or less of red phosphorus RP1 , c) 0.01 weight-% or more and 10.00 weight-% or less of metal carbonate MC1 , d) 0 weight-% or more and 5.00 weight-% or less of copper compound CC1 , e) 0 weight-% or more and 5.00 weight-% or less of borate B1 , and f) 0 weight-% or more and 98.98 weight-% or less of one or more additive(s) A1 ; preferably wherein the sum of the weight-% of a) to f) is 100%. 39. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the mixture M1 comprise(s), preferably consist(s) of: a) 1 .00 weight- % or more and 99.95 weight- % or less of polymer P1 , b) 0.01 weight- % or more and 40.0. weight- % or less of red phosphorus RP1 , c) 0.01 weight- % or more and 10.00 weight- % or less of metal carbonate MC1 , d) 0.01 weight- % or more and 5.00 weight- % or less of copper compound CC1 , e) 0.01 weight- % or more and 5.00 weight- % or less of borate B1 , and f) 0.01 weight- % or more and 98.96 weight- % or less of one or more additive(s) A1 ; preferably wherein the sum of the weight- % of a) to f) is 100%.

[0093] 40. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein a ratio A / B in the polymer composition PC1 and / or the mixture M1 is 1 or more and 20 or less, preferably 3 or more and 15 or less, more preferably 5 or more and 12 or less, more preferably 8 or more and 9 or less; wherein A is the content of the red phosphorus RP1 in the polymer composition PC1 or mixture M1 in weight- %, and wherein B is content of the metal carbonate MC1 in the polymer composition PC1 or mixture M1 in weight-%.

[0094] 41. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein a ratio B / C in the polymer composition PC1 and / or the mixture M1 is 1 or more and 20 or less, preferably 3 or more and 15 or less, more preferably 5 or more and 12 or less, more preferably 7 or more and 9 or less; wherein B is the content of the metal carbonate MC1 in the polymer composition PC1 or mixture M1 in weight- %, and wherein C is content of the copper compound CC1 in the polymer composition PC1 or mixture M1 in weight-%.

[0095] 42. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the polymer product PP1 exhibit(s) a V-0 in the UL 94 standard test using a test specimen having a thickness of 0.8 mm.

[0096] 43. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the polymer product PP1 exhibit(s) a V-0 in the UL 94 standard test using a test specimen having a thickness of 1 .6 mm.

[0097] 44. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the polymer product PP1 passes the GWFI test at 960°C using a test specimen having a thickness of 0.8 mm. 45. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the polymer product PP1 passes the GWFI test at 960°C using a test specimen having a thickness of 1 .5 mm.

[0098] 46. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the polymer product PP1 exhibit(s) a P-emission per test specimen of 2000 g or less, preferably 1000 pg or less, more preferably 500 pg or less, more preferably 500 pg or less, more preferably 250 pg or less, more preferably 200 pg or less, more preferably 175 pg or less, more preferably 150 pg or less, more preferably 100 pg or less, more preferably 75 pg or less, more preferably 50 pg or less, more preferably 40 pg or less, more preferably 30 pg or less, more preferably 20 pg or less, more preferably 10 pg or less, more preferably 9 pg or less, more preferably 8 pg or less, more preferably 7 pg or less, more preferably 6 pg or less, more preferably 5 pg or less.

[0099] 47. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the polymer product PP1 exhibit(s) improved fire resistance, improved stability, improved stabilization of the red phosphorous, less vulnerable to generate undesirable products containing phosphorous, reduced emission of phosphorus containing compounds, improved tracking resistance, improved homogeneity, reduced pack size, improved mechanical properties, and / or, preferably and, simplified production feasibility.

[0100] 48. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the polymer product PP1 exhibit(s), a bulk density according to DIN ISO 697 of 580 g / L or more, preferably 590 g / L or more, more preferably 600 g / L or more, more preferably 605 g / L or more, more preferably 610 g / L or more, more preferably 620 g / L or more, more preferably 630 g / L or more, more preferably 640 g / L or more, more preferably 650 g / L or more.

[0101] 49. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the polymer product PP1 exhibit(s), a bulk density according to DIN ISO 697 of 700 g / L or less, preferably 690 g / L or less, more preferably 680 g / L or less, more preferably 670 g / L or less, more preferably 660 g / L or less, more preferably 650 g / L or less, more preferably 640 g / L or less, more preferably 630 g / L or less.

[0102] 50. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the polymer product PP1 exhibit(s) a Young's modulus of 4.00x103MPa or more, preferably 5.00x103MPa or more, more preferably 6.00x103MPa or more, more preferably 7.00x103MPa or more, more preferably 8.00x103MPa or more, more preferably 8.50x103MPa or more, more preferably 8.60x103MPa or more, more preferably 8.70x103MPa or more, more preferably 8.80x103MPa or more, more preferably 8.90x103MPa or more, more preferably 9.00x103MPa or more, more preferably 9.10x103MPa or more, more preferably 9.20x103MPa or more, more preferably 9.30x103MPa or more, more preferably 9.40x103MPa or more, more preferably 1.00x104MPa or more, more preferably 1 .10x104MPa or more, more preferably 1.20x104MPa or more, more preferably 1 .30x104MPa or more, more preferably 1 .40x104MPa or more, more preferably 1 .50x104MPa or more, more preferably 1 .60x104MPa or more, more preferably 1 .70x104MPa or more.

[0103] 51. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or the polymer product PP1 exhibit(s) a Young's modulus of 1.80x104MPa or less, preferably 1.60x104MPa or less, more preferably 1 .40x104MPa or less, more preferably 1 .20x104MPa or less, more preferably 1 .00x104MPa or less, more preferably 9.50x103MPa or less, more preferably 9.40x103MPa or less, more preferably 9.30x103MPa or less, more preferably 9.20x103MPa or less, more preferably 9.10x103MPa or less, more preferably 9.00x103MPa or less, more preferably 8.90x103MPa or less, more preferably 8.80x103MPa or less, more preferably 8.70x103MPa or less, more preferably 8.60x103MPa or less, more preferably 8.00x103MPa or less, more preferably 7.00x103MPa or less, more preferably 6.50x103MPa or less, more preferably 6.00x103MPa or less.

[0104] 52. Polymer composition PC1 , polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein a content of CaCOa in the polymer composition PC1 and / or the polymer product PP1 is 5 weight- % or less, preferably 4 weight- % or less, more preferably 3 weight- % or less, more preferably 2 weight- % or less, more preferably 1 weight- % or less, more preferably wherein the polymer composition PC1 and / or the polymer product PP1 does / do not contain CaCOa.

[0105] 53. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding embodiments, wherein a content of MgCOa in the polymer composition PC1 and / or the polymer product PP1 is 5 weight- % or less, preferably 4 weight- % or less, more preferably 3 weight- % or less, more preferably 2 weight- % or less, more preferably 1 weight- % or less, more preferably wherein the polymer composition PC1 and / or the polymer product PP1 does / do not contain MgCOa.

[0106] Examples

[0107] The invention is further illustrated by the following examples.

[0108] The following components were used:

[0109] Component a:

[0110] Nylon-6, 6 with a viscosity number VN 150 mL / g, measured in 0.5 weight- % solution in 96 weight- % sulfuric acid at 25'

[0111] C according to ISO 307 (Ultramid A27 from BASF SE). Component b: 50% concentrate of red phosphorus of average particle size (d50) from 10 to 30 pm in an olefin polymer made of: 59.8 weight- % of ethylene, 35 weight- % of n-butyl acrylate, 4.5 weight- % of acrylic acid, and 0.7 weight- % of maleic anhydride with melt index MFI (190 / 2.16) 10 g / 10 min. The copolymer was produced via copolymerization of the monomers at elevated temperature and elevated pressure.

[0112] Component c / 1 : commercially available lanthanum-lll-carbonate (CAS: 6487-39-4).

[0113] Component c / 2: commercially available cerium-lll-carbonate (CAS: 54451-25-1).

[0114] Component c / 3: commercially available zinc-l l-carbonate (CAS: 5263-02-5).

[0115] Component c / 4: commercially available calcium carbonate (CAS: 471-34-1).

[0116] Component c / 5: commercially available sodium carbonate (CAS: 497-19-8).

[0117] Component d: commercially available talc powder with a median particle size D50 of 2.3 pirn and with a specific BET surface area of 9.5 m2 / g (measured in accordance with ISO 4652).

[0118] Component e: Standard chopped glass fiber for polyamides, length = 4.5 mm, diameter = 10 pm.

[0119] Component f / 1 : N,N'-Hexamethylenebis-3,5-di-tert-butyl-4-hydroxyhydrocinnamide (Irganox® 1098)

[0120] Component f / 2: commercially available Ca-stearate (CAS: 1592-23-0)

[0121] Component f / 3: 30% concentrate of carbon black in PA6 (Ultramid B27)

[0122] Component g1 : commercially available Zinc borate (CAS: 12767-90-7) with a median particle size D50 of 9 pirn (measured via laser diffraction).

[0123] Component g2: commercially available Zinc oxide (CAS: 215-222-5).

[0124] Component h / 1 : commercially available red Copper oxide (copper-l-oxide) (CAS: 1317-39-1) with a minimum content of Cu2O of 97% (in accordance to ASTM method D283-84).

[0125] Component h / 2: commercially available Copper-l-iodide (CAS: 7681-65-4) with a minimum content of Cui of 98%. Component h / 3: commercially available Copper-ll-oxide (CAS: 1317-38-0).

[0126] The individual components were mixed in a ZSK 26 (Berstorff) twin-screw extruder with throughput 20 kg / h and a flat temperature profile at about 270° C, extruded in the form of strand, cooled until pelletizable, and pelletized.

[0127] The test specimens for the study set out in Table 1 were injection-molded in an Arburg 420C injection-molding machine at a melt temperature of about 270° C. and mold temperature of about 80° C.

[0128] The table gives the constitutions of the molding compositions and the results of the measurements. able 1 : Compositions of examples 1 to 9

[0129] Ex. 1 Ex. 2 Ex. 3 Ex. 4 Ex. 5 Ex. 6 Ex. 7 Ex. 8 Ex. 9 Ex. 10

[0130] Component a 53.97 53.97 53.97 53.87 54.27 53.87 53.87 53.87 53.87 53.87 e 26 26 26 26 26 26 26 26 26 26 b 12 12 12 12 12 12 12 12 12 12 f3 3.33 3.33 3.33 3.33 3.33 3.33 3.33 3.33 3.33 3.33 d 3 3 3 3 3 3 3 3 3 3 d 0.7 0.7 0.7 0.7 0.3 f1 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 f2 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 g1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 r OO g2 0.7 hi 0.1 0.1 0.1 0.1 0.1 0.1 0.1 h2 0.1 h3 0.1 c2 0.7 c3 0.7 c4 0.7 c5

[0131] able 2: Tests results of the examples 1 to 9

[0132] Example # unit Ex. 1 Ex. 2 Ex. 3 Ex. 4 Ex. 5 Ex. 6 Ex. 7 Ex. 8 Ex. 9 Ex. 10

[0133] Bulk density g / L 659 634 628 657 649 603 586 593 591 623 vicosity number cm3 / g 152 154 154 147 153 148 149 155 154 153

[0134] Young's modulus MPa 8782 9404 9236 9124 8901 8933 8672 8721 8656 8684

[0135] Breaking stress MPa 139 145 141 140 138 137 133 138 141 138

[0136] Elongation at break % 3.1 3.4 3.4 3.3 3.2 3.3 3.2 3.4 3.4 3.4

[0137] Charpy impact strength kJ / m269 75 73 73 71 70 69 72 72 74

[0138] Charpy notched impact strength kJ / m28.5 9.4 8.9 8.7 8.5 8.6 7.0 8.6 8.1 8

[0139] Bending temperature (HDT) °C 242 244 242 242 243 243 243 243 241

[0140] Comparative Tracking Index - 400-0.2 400-0.3 400-0.2 400-0.2 450-0.2 425-0.2 400-0.6 400-1.1 400-0.8 400-0.3

[0141] MVR cm3 / 10 min 21.3 14.0 14.5 19.5 18.8 24.4 22.0 19.8 27.3 24.5

[0142] UL 94 test d= 0.8 mm - V-1 V-0 V-0 V-0 V-0 V-0 V-0 V-0 V-0 V-0

[0143] UL 94 test d= 1.6 mm - V-0 V-0 V-0 V-0 V-0 V-0 V-0 V-0 V-0 V-0

[0144] GWFI 0.8 mm - pass pass pass pass pass pass pass pass pass pass

[0145] GWFI 1.5 mm - pass pass pass pass pass pass pass pass pass pass

[0146] P-emission g P / PS 12.0 170.0 9.0 6.0 6.0 5.0 130.0 24.0 37.0 41.0

Claims

Claims1 . Polymer composition PC1 , comprising, preferably consisting of: a) a polymer P1 , b) red phosphorus RP1 , c) a metal carbonate MC1 , d) optionally a copper compound CC1 , e) optionally a borate B1 , and f) optionally one or more additive(s) A1 ; wherein a metal of the metal carbonate MC1 is selected from an alkali metal, an alkaline earth metal, a transition metal, an inner transition metal, and / or a mixture thereof.

2. Polymer composition PC1 according to claim 1 , wherein the metal of the metal carbonate MC1 is selected from a transition metal, preferably zinc; or wherein the metal of the metal carbonate MC1 is selected from a lanthanide, an actinide, and / or a mixture thereof, preferably a lanthanide, more preferably cerium carbonate and / or lanthanum carbonate, more preferably lanthanum carbonate; or wherein the metal of the metal carbonate MC1 is selected from an alkali metal, preferably lithium, sodium, potassium, and / or a mixture thereof, more preferably sodium; or wherein the metal of the metal carbonate MC1 is selected from an alkaline earth metal, preferably magnesium, calcium, strontium, barium, more preferably calcium.

3. Polymer composition PC1 according to claim 1 or 2, wherein the metal carbonate MC1 is selected from lanthanum carbonate and cerium carbonate, more preferably lanthanum carbonate.

4. Polymer composition PC1 according to any one of the preceding claims, wherein the polymer P1 is a thermoplastic polymer; preferably wherein the polymer P1 is a polyamide, preferably polyamide 6, polyamide 66, PA56, PA6T / 6, PA6I / 6T, PA610, PA9T, PA6T / 66, PA66 / 6T, PA5T, PA10T and / or a mixture thereof, more preferably polyamide 66 and / or PA6T / 6.

4. Polymer composition PC1 according to any one of the preceding claims, wherein the polymer composition PC1 comprises a copper compound CC1, preferably wherein the copper in the copper compound CC1 exhibits the oxidation state 1+; preferably wherein the polymer composition PC1 and / or the mixture M1 comprises a cooper halide, preferably copper iodide (Cui), and / or copper oxide (CU2O), preferably copper oxide (CU2O).

5. Polymer composition PC1 according to any one of the preceding claims, wherein the polymer composition PC1 comprises a borate B1 , preferably wherein the borate B1 is a metal borate, preferably zinc borate, morepreferably ZnO B203'2H20, 2ZnO3B203(CAS: 12767-90-7), 2ZnO3'3B2O3'3.5H2O (CAS: 138265-88-0), and / or 2ZnO-3B2O3-3.5H2O (Zn[B3O4(OH)3]), more preferably 2ZnO-3B2O3(CAS: 12767-90-7).

6. Polymer composition PC1 according to any one of the preceding claims, wherein the polymer composition PC1 comprises, preferably consists of: a) 1 .00 weight- % or more and 99.95 weight- % or less of polymer P1 , b) 0.01 weight- % or more and 40.

0. weight- % or less of red phosphorus RP1 , c) 0.01 weight- % or more and 10.00 weight- % or less of metal carbonate MC1 , d) 0.01 weight- % or more and 5.00 weight- % or less of copper compound CC1 , e) 0.01 weight- % or more and 5.00 weight- % or less of borate B1 , and f) 0.01 weight- % or more and 98.96 weight- % or less of one or more additive(s) A1 ; preferably wherein the sum of the weight- % of a) to f) is 100%.

7. Polymer composition PC1 according to any one of the preceding claims, wherein a content of CaCO3and / or MgCO3in the polymer composition PC1 is 5 weight- % or less, preferably 4 weight- % or less, more preferably 3 weight- % or less, more preferably 2 weight- % or less, more preferably 1 weight- % or less, more preferably wherein the polymer composition PC1 does not contain CaCO3and / or, preferably and, MgCO3.

8. Polymer composition PC1 according to any one of the preceding claims, wherein the metal of the metal carbonate MC1 is selected from an alkali metal, an alkaline earth metal, an inner transition metal, and / or a mixture thereof; preferably an alkaline earth metal, an inner transition metal, and / or a mixture thereof; preferably wherein the metal of the metal carbonate MC1 is an inner transition metal.

9. Use of the polymer composition PC1 according to any one of the preceding claims for the production of a polymer product PP1 or in a recycling method.

10. Polymer product PP1 comprising the polymer composition PC1 according to any one of the preceding claims.11 . Use of the polymer product PP1 according to any one of the preceding claims in a recycling method.

12. Method comprising the following step: mixing a mixture M1 to obtain a polymer composition PC1 , wherein the mixture M1 comprises: a) a polymer P1 , b) red phosphorus RP1 , c) a metal carbonate MC1 , d) optionally a copper compound CC1 ,e) optionally a borate B1 , and f) optionally one or more additive(s) A1 ; wherein a metal of the metal carbonate MC1 is selected from an alkali metal, an alkaline earth metal, a transition metal, an inner transition metal, and / or a mixture thereof.

13. Method, preferably according to claim 12, comprising one or more of the following step(s): pelletizing the polymer composition PC1; and / or converting, preferably by injection molding, the polymer composition PC1 to obtain a polymer product PP1 ; and / or recycling the polymer composition PC1 and / or polymer product PP1.

14. Use of metal carbonate MC1 in a polymer composition PC1 comprising a polymer P1 and red phosphorus RP1 , wherein a metal of the metal carbonate MC1 is selected from an alkali metal, an alkaline earth metal, a transition metal, an inner transition metal, and / or a mixture thereof, preferably for the stabilization of the red phosphorus RP1.

15. Polymer composition PC1, polymer product PP1 , method and / or use according to any one of the preceding claims, wherein the polymer composition PC1 and / or the polymer product PP1 exhibit(s) improved fire resistance, improved stability, improved stabilization of the red phosphorous, less vulnerable to generate undesirable products containing phosphorous, reduced emission of phosphorus containing compounds, improved tracking resistance, improved homogeneity, reduced pack size, improved mechanical properties, and / or, preferably and, simplified production feasibility.

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