Polymer composition

Abstract

Polymer composition Herein described is a specific polymer composition PC1 and polymer product PP1 and a specific method for producing the same.

Description

[0001] Polymer composition

[0002] Herein disclosed is a (specific) method for producing a polymer composition or polymer product, the use of a (specific) mixture for the production of a polymer composition and a (specific) polymer composition and product.

[0003] Flame-retardant polymer compounds with improved mechanical properties, e.g. flame-retardant polyamides, are widespread compounds for a variety of application. In addition, it is important that these polymer compounds have a high recycling content. However, in a typical mechanical recycling process, the flame retardancy and mechanical properties of these polymer compounds decrease, leading to a downcycled product.

[0004] Thus, the object of the present invention is to provide a recycling method, which exhibits at least one of: leading to an upcycled product, enhancing the recycling content, improving the mechanical properties, improving flame retardancy, and / or improving flaming behavior.

[0005] This object is at least partially solved by a method comprising the following steps: i) providing a polymer composition PCO, wherein the polymer composition PCO comprises, preferably consists of: a) one or more polymer(s) PC0-P1 , and b) one or more additive(s) PC0-A1 ; ii) mixing and annealing a mixture M1 to obtain a polymer composition PC1, wherein the mixture M1 comprises, preferably consists of: a) the polymer composition PCO, b) preferably one or more polymer(s) M1-P1 .

[0006] In a preferred embodiment, the method comprises the (further) step: iii) converting the polymer composition PC1 to obtain a polymer product PP1.

[0007] The object is further at least partially solved by a method, comprising the step: iii) converting the polymer composition PC1 obtainable by or obtained by the method described herein or a chemical material obtainable by or obtained by the method described herein to obtain a product PRF1.

[0008] In a preferred embodiment, the step ii) is performed in an extruder, preferably a twin-screw extruder. Thus, the mechanical properties are improved. In a preferred embodiment, the mixture M1 is mixed in step ii) for 5 s or more, preferably 10 s or more, more preferably 20 s or more, more preferably 30 s or more, more preferably 45 s or more, more preferably 60 s or more, more preferably 120 s or more, more preferably 180 s or more, more preferably 240 s or more and / or the mixture M1 is mixed in step II) for 15 min or less, preferably 10 min or less, more preferably 5 min or less, more preferably 240 s or less, more preferably 180 s or less, more preferably 120 s or less, more preferably 100 s or less, more preferably 80 s or less, more preferably 60 s or less, more preferably 45 s or less. Thus, the flame retardancy and the mechanical properties are improved.

[0009] In a preferred embodiment, the mixture M1 is annealed in step II) to 140 °C or more, preferably 160 °C or more, more preferably 170 °C or more, more preferably 180 °C or more, more preferably 190 °C or more, more preferably 200 °C or more, more preferably 210 °C or more, more preferably 220 °C or more, more preferably 230 °C or more, more preferably 240 °C or more, more preferably 250 °C or more, more preferably 260 °C or more, more preferably 270 °C or more, more preferably 280 °C or more, more preferably 290 °C or more, more preferably 300 °C or more and / or the mixture M1 is annealed in step II) to 500 °C or less, preferably 400 °C or less, more preferably 300 °C or less, more preferably 280 °C or less, more preferably 260 °C or less, more preferably 240 °C or less, more preferably 220 °C or less, more preferably 200 °C or less. Thus, the flame retardancy and the mechanical properties are improved.

[0010] In a preferred embodiment, the mixture M1 is annealed in step II) to (Tm of the one polymer composition PC0 or PC1 in °C) or more, preferably (Tm of the one polymer composition PC0 or PC1 in °C) + 10 °C or more, more preferably (Tm of the one polymer composition PC0 or PC1 in °C) + 20 °C or more, more preferably (Tm of the one polymer composition PC0 or PC1 in °C) + 30 °C or more, more preferably (Tm of the one polymer composition PC0 or PC1 in °C) + 40 °C or more, more preferably (Tm of the one polymer composition PC0 or PC1 in °C) + 60 °C or more, more preferably (Tm of the one polymer composition PC0 or PC1 in °C) + 80 °C or more, more preferably (Tm of the one polymer composition PC0 or PC1 in °C) + 100 °C or more and / or the mixture M1 is annealed in step II) to (Tm of the one polymer composition PC0 or PC 1 in °C) + 200 °C or less, preferably (T m of the one polymer composition PC0 or PC1 in °C) + 150 °C or less, more preferably (Tm of the one polymer composition PC0 or PC1 in °C) + 100 °C or less, more preferably (Tm of the one polymer composition PC0 or PC1 in °C) + 80 °C or less, more preferably (Tm of the one polymer composition PC0 or PC1 in °C) + 60 °C or less, more preferably (Tm of the one polymer composition PC0 or PC1 in °C) + 40 °C or less, more preferably (Tm of the one polymer composition PC0 or PC1 in °C) + 20 °C or less. Thus, the flame retardancy and the mechanical properties are improved.

[0011] In a preferred embodiment, the throughput in step II) is 0.5 kg / h or more and 25000 kg / h or less, preferably 1 kg / h or more and 10000 kg / h or less, more preferably 5 kg / h or more and 5000 kg / h or less, more preferably 10 kg / h or more and 2500 kg / h or less, more preferably 13 kg / h or more and 1000 kg / h or less, more preferably 16 kg / h or more and 500 kg / h or less, more preferably 19 kg / h or more and 300 kg / h or less. Thus, the flame retardancy and the mechanical properties are improved.

[0012] In a preferred embodiment, the method is a method for producing a polymer composition, preferably polymer composition PC1 and / or polymer product, preferably polymer product PP1.

[0013] Further, the above-described object is at least partially solved by a use of a mixture M1 for the production of a polymer composition PC1, wherein the mixture M1 comprises, preferably consists of: a) a polymer composition PC0, and b) preferably one or more polymer(s) M1-P1; and wherein the polymer composition PC0 comprises, preferably consists of: a) one or more polymer(s) PC0-P1 , and b) one or more additive(s) PC0-A1 ; and preferably wherein the polymer composition PC1 comprises, preferably consists of: a) one or more polymer(s) PC1-P1, and b) one or more additive(s) PC1-A1 .

[0014] In a preferred embodiment, the one or more additive(s) PC0-A1 comprises, preferably consists of, one or more reinforcement(s) PC0-R1. Thus, the mechanical properties are improved.

[0015] In a preferred embodiment, the mixture M1 comprises one or more additive(s) M1-A1, preferably wherein the one or more additive(s) M1-A1 and the one or more additive(s) PC0-A1 are not the same. This means that some types of the one or more additive(s) in PC0 and M1 might be the same, however, at least one type of the one or more additive(s) is / are different. The amount(s) of the one or more additive(s) might be the same or different in PC0 and M1 and preferably they are different.

[0016] In a preferred embodiment, the mixture M1 comprises one or more additive(s) M1-A1, preferably wherein the one or more additive(s) M1-A1 comprises, preferably consists of, one or more reinforcement(s) M1-R1 and / or the one or more additive(s) PC1-A1 comprises, preferably consists of, one or more reinforcement(s) PC1-R1. Thus, the mechanical properties are improved.

[0017] In a preferred embodiment, the one or more additive(s) PC0-A1 comprises, preferably consists of, one or more reinforcement(s) PC0-R1 and / or the mixture M1 comprises one or more additive(s) M1-A1 wherein the one or more additive(s) M1-A1 comprises, preferably consists of, one or more reinforcement(s) M1-R1. Thus, the mechanical properties are improved. In a preferred embodiment, the one or more reinforcement(s) PC0-R1, M1-R1 and / or PC1-R1 is / are made of glass, more preferably wherein the one or more reinforcement(s) M1-R1, PC0-R1 and / or PC1-R1 comprise(s), preferably consist(s) of, glass fibers M1-GF1, PC0-GF1 and / or PC1-GF1 and / or the one or more reinforcement(s) PC0-R1, M1- R1 and / or PC1-R1 comprise(s), preferably consist(s) of, fibers or beads, more preferably fibers, more preferably glass fibers M1-GF1, PC0-GF1 and / or PC1-GF1. Thus, the mechanical properties are improved. The inventors recognized, that surprisingly if the polymer composition PCO comprises one or more reinforcement(s) PC0-R1, preferably wherein the one or more reinforcements PC0-R1 is made of glass, more preferably wherein the one or more reinforcement(s) PC0-R1 comprises, preferably consists of, glass fibers PC0-GF1, the mechanical properties, especially the elongation at break, of the polymer composition PC1 is / are improved.

[0018] In preferred embodiment, a length Lant of the one or more reinforcement(s) PC0-R1 is 20 pm or more, preferably 30 pm or more, more preferably 40 pm or more, more preferably 50 pm or more, more preferably 60 pm or more, more preferably 70 pm or more, more preferably 80 pm or more, more preferably 90 pm or more, more preferably 100 pm or more, more preferably 110 pm or more, more preferably 120 pm or more, more preferably 130 pm or more, more preferably 140 pm or more and / or a length Lant of the one or more reinforcement(s) PC0-R1 is 1000 pm or less, preferably 750 pm or less, more preferably 500 pm or less, more preferably 250 pm or less, more preferably 225 pm or less, more preferably 200 pm or less, more preferably 180 pm or less, more preferably 170 pm or less, more preferably 160 pm or less, more preferably 150 pm or less, more preferably 140 pm or less. Thus, the mechanical and flame retardancy properties are improved.

[0019] In a preferred embodiment, a thickness Tant of the one or more reinforcement(s) PC0-R1 is 1 pm or more and 40 pm or less, preferably 3 pm or more and 35 pm or less, more preferably 5 pm or more and 30 pm or less, more preferably 6 pm or more and 25 pm or less, more preferably 7 pm or more and 20 pm or less, more preferably 8 pm or more and 15 pm or less, more preferably 9 pm or more and 12 pm or less, more preferably about 10 pm. Thus, the mechanical and flame retardancy properties are improved.

[0020] In a preferred embodiment, a ratio [pm I pm] of a / the length Lant of the one or more reinforcement(s) PC0-R1 to a / the thickness Tant of the one or more reinforcement(s) PC0-R1 is 1 or more and 1000 or less, preferably 2 or more and 500 or less, more preferably 4 or more and 250 or less, more preferably 6 or more and 100 or less, more preferably 8 or more and 50 or less, more preferably 10 or more and 25 or less, more preferably 12 or more and 20 or less, more preferably 13 or more and 15 or less, more preferably about 14. Thus, the mechanical and flame retardancy properties are improved.

[0021] In preferred embodiment, a length Lant of the one or more reinforcement(s) M1-R1 is 20 pm or more, preferably 100 pm or more, more preferably 250 pm or more, more preferably 500 pm or more, more preferably 1000 pm or more, more preferably 2000 pm or more, more preferably 3000 pm or more, more preferably 4000 pm or more and / or a length Lant of the one or more reinforcement(s) M1-R1 is 1 cm or less, preferably 9000 pm or less, more preferably 7500 m or less, more preferably 6000 pm or less, more preferably 5000 pm or less, more preferably 4000 pm or less, more preferably 3000 pm or less, more preferably 2000 pm or less, more preferably 1000 pm or less, more preferably 500 pm or less, more preferably 250 pm or less. Thus, the mechanical and flame retardancy properties are improved.

[0022] In a preferred embodiment, a thickness Tant of the one or more reinforcement(s) M1-R1 is 1 pm or more and 40 pm or less, preferably 3 pm or more and 35 pm or less, more preferably 5 pm or more and 30 pm or less, more preferably 6 pm or more and 25 pm or less, more preferably 7 pm or more and 20 pm or less, more preferably 8 pm or more and 15 pm or less, more preferably 9 pm or more and 12 pm or less, more preferably about 10 pm. Thus, the mechanical and flame retardancy properties are improved.

[0023] In a preferred embodiment, a ratio [pm I pm] of a / the length Lant of the one or more reinforcement(s) M1-R1 to a / the thickness Tant of the one or more reinforcement(s) M1-R1 is 1 or more and 10000 or less, preferably 50 or more and 5000 or less, more preferably 75 or more and 2500 or less, more preferably 100 or more and 1000 or less, more preferably 200 or more and 700 or less, more preferably 250 or more and 600 or less, more preferably 300 or more and 500 or less, more preferably 350 or more and 450 or less, more preferably about 400. Thus, the mechanical and flame retardancy properties are improved.

[0024] In a preferred embodiment, a length Lant of the one or more reinforcement(s) PC1-R1 is 20 pm or more, preferably 30 pm or more, more preferably 40 pm or more, more preferably 50 pm or more, more preferably 60 pm or more, more preferably 70 pm or more, more preferably 80 pm or more, more preferably 90 pm or more, more preferably 100 pm or more, more preferably 110 pm or more, more preferably 115 pm or more and / or a length Lant of the one or more reinforcement(s) PC1-R1 is 1000 pm or less, preferably 750 pm or less, more preferably 500 pm or less, more preferably 250 pm or less, more preferably 225 pm or less, more preferably 200 pm or less, more preferably 180 pm or less, more preferably 170 pm or less, more preferably 160 pm or less, more preferably 150 pm or less, more preferably 140 pm or less, more preferably 130 pm or less, more preferably 120 pm or less, more preferably about 118 pm. Thus, the mechanical and flame retardancy properties are improved.

[0025] In a preferred embodiment, a thickness Tant of the one or more reinforcement(s) PC1-R1 is 1 pm or more and 40 pm or less, preferably 3 pm or more and 35 pm or less, more preferably 5 pm or more and 30 pm or less, more preferably 6 pm or more and 25 pm or less, more preferably 7 pm or more and 20 pm or less, more preferably 8 pm or more and 15 pm or less, more preferably 9 pm or more and 12 pm or less, more preferably about 10 pm. Thus, the mechanical and flame retardancy properties are improved.

[0026] In a preferred embodiment, a ratio [pm I pm] of a / the length Lant of the one or more reinforcement(s) PC1-R1 to a / the thickness Tant of the one or more reinforcement(s) PC1-R1 is 1 or more and 1000 or less, preferably 2 or more and 500 or less, more preferably 4 or more and 250 or less, more preferably 6 or more and 100 or less, more preferably 8 or more and 50 or less, more preferably 9 or more and 20 or less, more preferably 10 or more and 15 or less, more preferably 11 or more and 13 or less, more preferably about 12. Thus, the mechanical and flame retardancy properties are improved.

[0027] In a preferred embodiment, the one or more additive(s) PC0-A1 comprise(s), preferably consist(s) of, one or more reinforcement(s) PC0-R1 , and the one or more additive(s) PC1-A1 comprise(s), preferably consist(s) of, one or more reinforcement(s) PC1-R1 , and a ratio [ m I pm] of a / the length Lant of the one or more reinforcement(s) PC1-R1 to a / the length Lant of the one or more reinforcement(s) PC0-R1 is 0.50 to 1 .00, preferably 0.60 to 0.95, more preferably 0.70 to 0.92, more preferably 0.80 to 0.90, more preferably 0.82 to 0.88. Thus, the mechanical and flame retardancy properties are improved.

[0028] In a preferred embodiment, the one or more additive(s) PC0-A1 comprise(s), preferably consist(s) of, one or more reinforcement(s) PC0-R1 , and the one or more additive(s) PC1-A1 comprise(s), preferably consist(s) of, one or more reinforcement(s) PC1-R1 , and a ratio [pm I pm] of a / the length Lant of the one or more reinforcement(s) PC0-R1 to a / the length Lant of the one or more reinforcement(s) PC1-R1 is 1 .00 or more and 100.00 or less, preferably 1 .05 or more and 25.0 or less, more preferably 1.08 or more and 20.0 or less, more preferably 1.10 or more and 10.0 or less, more preferably 1.15 or more and 5.0 or less, more preferably 1.18 or more and 2.0 or less.

[0029] In a preferred embodiment, the one or more additive(s) PC0-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) PC0-FR1 , preferably wherein the one or more additive(s) PC0-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) PC0-FR1 and one or more reinforcement(s) PC0-R1. Thus, the flame retardancy properties are improved.

[0030] In a preferred embodiment, the one or more additive(s) PC0-A1 do(es) not comprise one or more flame retardant(s) PC0-FR1 and / or one or more reinforcement(s) PC0-R1.

[0031] In a preferred embodiment, the mixture M1 comprises one or more additive(s) M1-A1 , preferably wherein the one or more additive(s) M1-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) M1-FR1 , more preferably wherein the one or more additive(s) M1-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) M1-FR1 and one or more reinforcement(s) M1-R1. Thus, the mechanical and flame retardancy properties are improved.

[0032] In a preferred embodiment, the one or more additive(s) M1-A1 doe(es) not comprise one or more flame retardant(s) M1-FR1 and / or one or more reinforcement(s) M1-R1.

[0033] In a preferred embodiment, the one or more additive(s) PC1-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) PC1-FR1. Thus, the flame retardancy properties are improved. In a preferred embodiment, the one or more flame retardant(s) M1-FR1, PC0-FR1 and / or PC1-FR1 comprise(s), preferably consist(s) of, a flame retardant comprising H, O, N and C, more preferably a complex comprising cyanuric acid, more preferably melamine cyanurate. Thus, the flame retardancy properties are improved. The inventors recognized that surprisingly if the polymer composition PCO comprises one or more reinforcements PC0-R1, preferably glass fibers, and the polymer composition PC1 comprises one or more flame retardant(s) PC1-FR1, preferably a flame retardant comprising H, O, N and C, more preferably a complex comprising cyanuric acid, more preferably melamine cyanurate, the flame retardancy properties are improved. Thus, an upcycled product can be obtained having enhanced recycling content.

[0034] In a preferred embodiment, the one or more additive(s) PC0-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) PC0-FR1 and / or the mixture M1 comprises one or more additive(s) M1-A1, wherein the one or more additive(s) M1-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) M1-FR1. Thus, the flame retardancy properties are improved.

[0035] In a preferred embodiment, the one or more polymer(s) PC0-P1, M1-P1 and / or PC1-P1 comprise(s), preferably consist(s) of, a thermoplastic polymer, preferably thermoplastic polyurethane and / or polyamide, more preferably PA6 and / or PA66, more preferably PA6. Thus, the mechanical and flame retardancy properties are improved.

[0036] In a preferred embodiment, the one or more polymer(s) PC0-P1, M1-P1 and / or PC1-P1 are predominantly the same, preferably are the same. Thus, the mechanical properties are improved. Herein, the term "predominantly” is preferably 50 weight-% or more.

[0037] In a preferred embodiment, the mixture M1 comprises one or more polymer(s) M1-P1. Thus, the mechanical and flame retardancy properties are improved.

[0038] In a preferred embodiment, the mixture M1 comprises, preferably consists of, in weight-%: a) 5 to 95, preferably 20 to 70, polymer composition PCO, b) 0 to 95, preferably 5 to 40, one or more polymer(s) M1-P1, c) 0 to 50, preferably 0.1 to 30, one or more reinforcement(s) M1-R1, d) 0 to 35, preferably 3 to 25, one or more flame retardant(s) M1-FR1, and e) 0 to 20, preferably 0.1 to 15, one or more additive(s) A2.

[0039] Thus, the mechanical properties and flaming behavior are improved.

[0040] In a preferred embodiment, a ratio [weight- % / weight-%] of the polymer composition PCO to the one or more polymer(s) M1-P1 is 0.5 or more and 40.0 or less, preferably 1.0 or more and 20.0 or less, more preferably 1.5 or more and 10.0 or less, more preferably 2.0 or more and 5.0 or less, more preferably 2.5 or more and 3.5. Thus, the mechanical and flame retardancy properties are improved.

[0041] In a preferred embodiment, the polymer composition PCO is at least partially waste or obtained from waste, preferably wherein the waste is post-consumer waste and / or post-industrial waste.

[0042] In a preferred embodiment, an age of the polymer composition PCO is 1 day or more, preferably 1 week or more, more preferably 1 year or more; and / or an age of the polymer composition PCO is 100 years or less, preferably 50 years or less, more preferably 25 years or less. Thus, the recycling content is enhanced.

[0043] In a preferred embodiment, the polymer composition PCO comprises, preferably consists of: a) 20 to 90, preferably 30 to 80, one or more polymer(s) PC0-P1 , and b) 5 to 50, preferably 10 to 35, one or more reinforcement(s) PC0-R1, c) 0 to 20, preferably 1 to 10, one or more flame retardant(s) PC0-FR1 , and d) 0 to 20, preferably 0.1 to 10, one or more additive(s) A2.

[0044] Thus, the mechanical properties and flaming behavior are improved, and the recycling content is enhanced.

[0045] In a preferred embodiment, the polymer composition PC1 comprises, preferably consists of: a) 20 to 90, preferably 30 to 80, one or more polymer(s) PC1-P1 , and b) 5 to 50, preferably 10 to 35, one or more reinforcement(s) PC1-R1, c) 0 to 20, preferably 3 to 15, one or more flame retardant(s) PC1-FR1 , and d) 0 to 20, preferably 0.1 to 10, one or more additive(s) A2.

[0046] Thus, the mechanical properties and flaming behavior are improved, and the recycling content is enhanced.

[0047] If not stated otherwise, the polymer composition PCO, the polymer composition PC1 and / or the mixture M1 may comprise a further additive. Preferably, the polymer composition PCO, the polymer composition PC1 and / or the mixture M1 comprises one or more additive(s) A2, wherein the one or more additive(s) A2 is / are selected from antioxidating agent(s), stabilizer(s), lubricant(s), mineral(s), chain extender(s), impact modifier(s), colorant(s), pigment(s), soot(s), talc(s), and mixtures thereof.

[0048] In a preferred embodiment, a tensile modulus of the polymer composition PC1 is 1000 MPa or more and 10000 MPa or less, preferably 4000 MPa or more and 8000 MPa or less, more preferably 4000 MPa or more and 7500 MPa or less, more preferably 5000 MPa or more and 7000 MPa or less, more preferably 5500 MPa or more and 6750 MPa or less, more preferably 6000 MPa or more and 6500 MPa or less, more preferably 6100 MPa or more and 6250 MPa or less, more preferably 6120 MPa or more and 6150 MPa or less. If this parameter is fulfilled, the mechanical properties and flame retardancy properties are improved and the recycling content is enhanced. In preferred embodiment, a tensile stress at break of the polymer composition PC1 is 10 MPa or more and 1000 MPa or less, preferably 25 MPa or more and 500 MPa or less, more preferably 50 MPa or more and 250 MPa or less, more preferably 60 MPa or more and 200 MPa or less, more preferably 70 MPa or more and 150 MPa or less, more preferably 80 MPa or more and 125 MPa or less, more preferably 90 MPa or more and 110 MPa or less, more preferably 95 MPa or more and 100 MPa or less. If this parameter is fulfilled, the mechanical properties and flame retardancy properties are improved and the recycling content is enhanced.

[0049] In a preferred embodiment, an elongation at break of the polymer composition PC1 is 1.1 % or more and 10.0 % or less, preferably 2.0 % or more and 9.0 % or less, more preferably 3.0 % or more and 7.0 % or less, more preferably 3.5 % or more and 6.0 % or less, more preferably 3.8 % or more and 5.2 % or less, more preferably 4.1 % or more and 4.9 % or less, more preferably 4.2 % or more and 4.7 % or less, more preferably 4.3 % or more and 4.5 % or less. If this parameter is fulfilled, the mechanical properties and flame retardancy properties are improved and the recycling content is enhanced.

[0050] In a preferred embodiment, an impact resistance of the polymer composition PC1 is 10 kJ / m2or more and 100 kJ / m2or less, preferably 20 kJ / m2or more and 75 kJ / m2or less, more 30 kJ / m2or more and 50 kJ / m2or less, more 35 kJ / m2or more and 48 kJ / m2or less, more 40 kJ / m2or more and 44 kJ / m2or less. If this parameter is fulfilled, the mechanical properties and flame retardancy properties are improved and the recycling content is enhanced.

[0051] In a preferred embodiment, a notched impact resistance of the polymer composition PC1 is 1 .0 kJ / m2or more and 20 kJ / m2or less, preferably 2.0 kJ / m2or more and 10 kJ / m2or less, more 2.5 kJ / m2or more and 8 kJ / m2or less, more 3.0 kJ / m2or more and 6 kJ / m2or less, more 3.5 kJ / m2or more and 4 kJ / m2or less. If this parameter is fulfilled, the mechanical properties and flame retardancy properties are improved and the recycling content is enhanced.

[0052] In preferred embodiment, the polymer composition PC1 exhibits in the UL94 V test a V-2, preferably a V-1, more preferably a V-0. If this parameter is fulfilled, the flame retardancy properties and flaming behavior are improved.

[0053] In a preferred embodiment, the polymer composition PC1 exhibits a total after flame time of 2 s or more and 100 s or less, preferably 5 s or more and 80 s or less, more preferably 10 s or more and 60 s or less, more preferably 15 s or more and 40 s or less, more preferably 18 s or more and 30 s or less, more preferably 20 s or more and 25 s or less. If this parameter is fulfilled, the flame retardancy properties and flaming behavior are improved.

[0054] In a preferred embodiment, the polymer composition PC1 passes the GWFI test. If this parameter is fulfilled, the flame retardancy properties and flaming behavior are improved.

[0055] Further, the above-described object is at least partially solved by polymer composition PC1 obtained by or obtainable by the method described herein. Further, the above-described object is at least partially solved by a polymer product PP1 obtained by or obtainable by the method described herein.

[0056] In a preferred embodiment, the polymer composition PCO, the polymer composition PC1 and / or the polymer product PP1 is / are or is / are a part of: a part of a car; preferably cylinder head cover, engine cover, housing for charge air cooler, coating, cover, elevator load bearing assembly, foil, fiber, film, foam, damping element, drive belts for machines, charge air cooler flap, intake pipe, intake manifold, connector, gasket, gear wheel, fan wheel, cooling water box, hose, housing, housing part for heat exchanger, coolant cooler, charge air cooler, laminate, middle sole of a shoe, lining in vehicles, modifier for thermoplastic materials, molded body, roofing or flooring for buildings or vehicles, non-woven fabric, packaging material, passenger conveyer, hadrails for passenger conveyers, profile, roll, roping arrangements, saddle, shoe sole, strap, thermostat, water pump, radiator, fastening part, part of battery system for electromobility, dashboard, pillow, steering column switch, seat, headrest, center console, transmission component, door module, A, B, C or D pillar cover, spoiler, door handle, exterior mirror, windscreen wiper, windscreen wiper protection housing, wiper blade, decorative grill, cover strip, roof rail, window frame, sunroof frame, antenna panel, headlight and taillight, engine cover, cylinder head cover, intake manifold, airbag, steering wheel, cushion, or coating; a cloth; preferably shirt, trousers, pullover, boot, shoe, shoe sole, tight or jacket; an electrical part; preferably electrical or electronic passive or active component, cable, cable connector, cable sheeting cell-phone, circuit breaker, circuit board, printed circuit board, terminal block, housing component, foil, line, switch, switch gear, plug, socket, distributor, relay, resistor, capacitor, inductor, bobbin, lamp, diode, LED, transistor, connector, regulator, integrated circuit (IC), processor, controller, memory, sensor, microswitch, microbutton, semiconductor, reflector housing for light-emitting diodes (LED), fastener for electrical or electronic component, solar module, spacer, bolt, strip, slide-in guide, screw, nut, television, trailing cable, film hinge, snap hook (snap-in), or spring tongue; a consumer product, agricultural product or pharmaceutical product; preferably tennis string, climbing rope, bristle, brush, artificial grass, 3D printing filament, grass trimmer, zipper, hook and loop fastener, paper machine clothing, extrusion coating, fishing line, fishing net, offshore line and rope, vial, syringe, ampoule, bottle, bag; preferably organic waste bag, vegetable or fruit bag; sliding element, spindle nut, chain conveyor, plain bearing, roller, wheel, gear, roller, ring gear, screw and spring dampers, hose, pipeline, cable sheathing, socket, switch, cable tie, fan wheel, carpet, non-woven article, box or bottle for cosmetics, mattress, cushion, insulation, refrigerator, freezer, insulating box for cold or hot goods, water heater, hot water storage tank, pipe, insulation board, insulation panel, detergent, dishwasher tabs or powder, shampoo, body wash, shower gel, soap, fertilizer, mulch film, fungicide, or pesticide; a packaging; preferably for the food industry; preferably blown or cast film, more preferably mono- or multilayer blown film or mono- or multi-layer cast film; axially stretched film, preferably biaxial or multiaxial, or laminating film, a molded article; preferably an injection molded article, more preferably a coffee capsule; a thermoformed article; preferably a coffee capsule; or a part of a construction; preferably a rotor blade, insulating material; preferably acoustic or thermal insulating material; frame, housing, wall, coating, fagade, window, door, or separating wall.

[0057] In a preferred embodiment, a / the content of the polymer composition PCO in the polymer composition PC1 and / or mixture M1 and / or polymer product PP1 is 1 weight-% or more, preferably 2 weight-% or more, more preferably 5 weight-% or more, more preferably 15 weight-% or more, more preferably 30 weight-% or more, more preferably 40 weight-% or more, more preferably 60 weight-% or more, more preferably 80 weight-% or more, more preferably 90 weight-% or more, more preferably 95 weight-% or more; and / or wherein a / the content of the polymer composition

[0058] PCO in the polymer composition PC1 and / or mixture M1 and / or polymer product PP1 is 100 weight-% or less, preferably 95 weight-% or less, more preferably 90 weight-% or less, more preferably 50 weight-% or less, more preferably 25 weight-% or less, more preferably 10 weight-% or less; and preferably wherein the content is determined based on identity preservation and / or segregation and / or mass balance and / or book and claim chain of custody models, preferably based on mass balance, preferably the International Sustainability and Carbon Certification (ISCC) standard.

[0059] In preferred embodiment, the polymer composition PC1 and / or polymer product PP1 exhibits enhanced recycling content, improved mechanical properties, and / or improved flame retardancy; and / or the method and / or use leads to an upcycled product.

[0060] In preferred embodiment, the polymer composition PC1 comprises, preferably consists of: a) one or more polymer(s) PC1-P1, and b) one or more additive(s) PC1-A1 .

[0061] In preferred embodiment, a content of the one or more additive(s) PC0-A1, preferably the one or more flame retardant(s) PC0-FR1 and / or the one or more reinforcement(s) PC0-R1, more preferably the one or more flame retardant(s) PC0-FR1, more preferably melamine cyanurate, in the polymer composition PCO is 0.1 weight-% or more, preferably 1 weight-% or more, more preferably 2 weight-% or more, more preferably 3 weight-% or more, more preferably 4 weight-% or more, more preferably 5 weight-% or more, more preferably 6 weight-% or more, more preferably 7 weight-% or more, more preferably 8 weight-% or more, more preferably 9 weight-% or more, more preferably 10 weight-% or more, more preferably 11 weight-% or more, more preferably 12 weight-% or more, more preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 30 weight-% or more. Thus, the mechanical properties and flaming behavior are improved.

[0062] In preferred embodiment, a content of the one or more additive(s) PC0-A1, preferably the one or more flame retardant(s) PC0-FR1 and / or the one or more reinforcement(s) PC0-R1, more preferably the one or more flame retardant(s) PC0-FR1, more preferably melamine cyanurate, in the polymer composition PCO is 50 weight-% or less, preferably 40 weight-% or less, more preferably 35 weight-% or less, more preferably 30 weight-% or less, more preferably 25 weight-% or less, more preferably 20 weight-% or less, more preferably 15 weight-% or less, more preferably 14 weight-% or less, more preferably 13 weight-% or less, more preferably 12 weight-% or less, more preferably 11 weight-% or less, more preferably 10 weight-% or less, more preferably 9 weight-% or less, more preferably 8 weight-% or less, more preferably 7 weight-% or less, more preferably 6 weight-% or less, more preferably 5 weight-% or less. Thus, the mechanical properties and flaming behavior are improved.

[0063] In preferred embodiment, a content of the one or more additive(s) M1-A1, preferably the one or more flame retardant(s) M1-FR1 and / or the one or more reinforcement(s) M1-R1, more preferably the one or more flame retardant(s) M1-FR1, more preferably melamine cyanurate, in the mixture M1 is 0.1 weight-% or more, preferably 1 weight-% or more, more preferably 2 weight-% or more, more preferably 3 weight-% or more, more preferably 4 weight-% or more, more preferably 5 weight-% or more, more preferably 6 weight-% or more, more preferably 7 weight-% or more, more preferably 8 weight-% or more, more preferably 9 weight-% or more, more preferably 10 weight-% or more, more preferably 11 weight-% or more, more preferably 12 weight-% or more, more preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 30 weight-% or more. Thus, the mechanical properties and flaming behavior are improved.

[0064] In preferred embodiment, a content of the one or more additive(s) M1-A1, preferably the one or more flame retardant(s) M1-FR1 and / or the one or more reinforcement(s) M1-R1, more preferably the one or more flame retardant(s) M1-FR1, more preferably melamine cyanurate, in the mixture M1 is 50 weight-% or less, preferably 40 weight-% or less, more preferably 35 weight-% or less, more preferably 30 weight-% or less, more preferably 25 weight-% or less, more preferably 20 weight-% or less, more preferably 15 weight-% or less, more preferably 14 weight-% or less, more preferably 13 weight-% or less, more preferably 12 weight-% or less, more preferably 11 weight-% or less, more preferably 10 weight-% or less, more preferably 9 weight-% or less, more preferably 8 weight-

[0065] % or less, more preferably 7 weight-% or less, more preferably 6 weight-% or less, more preferably 5 weight-% or less. Thus, the mechanical properties and flaming behavior are improved.

[0066] In preferred embodiment, a content of the one or more additive(s) PC1-A1, preferably the one or more flame retardant(s) PC1-FR1 and / or the one or more reinforcement(s) PC1-R1, more preferably the one or more flame retardant(s) PC1-FR1, more preferably melamine cyanurate, in the polymer composition PC1 is 0.1 weight-% or more, preferably 1 weight-% or more, more preferably 2 weight-% or more, more preferably 3 weight-% or more, more preferably 4 weight-% or more, more preferably 5 weight-% or more, more preferably 6 weight-% or more, more preferably 7 weight-% or more, more preferably 8 weight-% or more, more preferably 9 weight-% or more, more preferably 10 weight-% or more, more preferably 11 weight-% or more, more preferably 12 weight-% or more, more preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 30 weight-% or more. Thus, the mechanical properties and flaming behavior are improved. In preferred embodiment, a content of the one or more additive(s) PC1-A1, preferably the one or more flame retardant(s) PC1-FR1 and / or the one or more reinforcement(s) PC1-R1, more preferably the one or more flame retardant(s) PC1-FR1, more preferably melamine cyanurate, in the polymer composition PC1 is 50 weight-% or less, preferably 40 weight-% or less, more preferably 35 weight-% or less, more preferably 30 weight-% or less, more preferably 25 weight-% or less, more preferably 20 weight-% or less, more preferably 15 weight-% or less, more preferably 14 weight-% or less, more preferably 13 weight-% or less, more preferably 12 weight-% or less, more preferably 11 weight-% or less, more preferably 10 weight-% or less, more preferably 9 weight-% or less, more preferably 8 weight-% or less, more preferably 7 weight-% or less, more preferably 6 weight-% or less, more preferably 5 weight-% or less. Thus, the mechanical properties and flaming behavior are improved.

[0067] In preferred embodiment, a content of the one or more additive(s) PC0-A1, preferably the one or more reinforcement(s) PC0-R1, more preferably glass fibers PC0-GF1, in the polymer composition PC0 is 0.1 weight-% or more, preferably 1 weight-% or more, more preferably 3 weight-% or more, more preferably 5 weight-% or more, more preferably 8 weight-% or more, more preferably 10 weight-% or more, more preferably 12 weight-% or more, more preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 25 weight-% or more, more preferably 30 weight-% or more, more preferably 35 weight-% or more, more preferably 40 weight-% or more, more preferably 50 weight-% or more. Thus, the mechanical properties and flaming behavior are improved.

[0068] In preferred embodiment, a content of the one or more additive(s) PC0-A1, preferably the one or more reinforcement(s) PC0-R1, more preferably glass fibers PC0-GF1, in the polymer composition PC0 is 50 weight-% or less, preferably 40 weight-% or less, more preferably 35 weight-% or less, more preferably 30 weight-% or less, more preferably 25 weight-% or less, more preferably 20 weight-% or less, more preferably 15 weight-% or less, more preferably 14 weight-% or less, more preferably 13 weight-% or less, more preferably 12 weight-% or less, more preferably 11 weight-% or less, more preferably 10 weight-% or less, more preferably 9 weight-% or less, more preferably 8 weight-% or less, more preferably 7 weight-% or less, more preferably 6 weight-% or less, more preferably 5 weight-% or less. Thus, the mechanical properties and flaming behavior are improved.

[0069] In a preferred embodiment, a content of the one or more additive(s) M1-A1, preferably the one or more reinforcement(s) M1-R1, more preferably glass fibers M1-GF1, in the mixture M1 is 50 weight-% or less, preferably 40 weight-% or less, more preferably 35 weight-% or less, more preferably 30 weight-% or less, more preferably 25 weight-% or less, more preferably 20 weight-% or less, more preferably 15 weight-% or less, more preferably 14 weight-% or less, more preferably 13 weight-% or less, more preferably 12 weight-% or less, more preferably 11 weight-% or less, more preferably 10 weight-% or less, more preferably 9 weight-% or less, more preferably 8 weight-

[0070] % or less, more preferably 7 weight-% or less, more preferably 6 weight-% or less, more preferably 5 weight-% or less. Thus, the mechanical properties and flaming behavior are improved. In a preferred embodiment, a content of the one or more additive(s) M1-A1, preferably the one or more reinforcement(s) M1-R1, more preferably glass fibers M1-GF1, in the mixture M1 is 0.1 weight-% or more, preferably 1 weight-% or more, more preferably 3 weight-% or more, more preferably 5 weight-% or more, more preferably 8 weight-% or more, more preferably 10 weight-% or more, more preferably 12 weight-% or more, more preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 25 weight-% or more, more preferably 30 weight-% or more, more preferably 35 weight-% or more, more preferably 40 weight-% or more, more preferably 50 weight-% or more. Thus, the mechanical properties and flaming behavior are improved.

[0071] In preferred embodiment, a content of the one or more additive(s) PC1-A1, preferably the one or more reinforcement(s) PC1-R1, more preferably glass fibers PC1-GF1, in the polymer composition PC1 is 0.1 weight-% or more, preferably 1 weight-% or more, more preferably 3 weight-% or more, more preferably 5 weight-% or more, more preferably 8 weight-% or more, more preferably 10 weight-% or more, more preferably 12 weight-% or more, more preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 25 weight-% or more, more preferably 30 weight-% or more, more preferably 35 weight-% or more, more preferably 40 weight-% or more, more preferably 50 weight-% or more. Thus, the mechanical properties and flaming behavior are improved.

[0072] In preferred embodiment, a content of the one or more additive(s) PC1-A1, preferably the one or more reinforcement(s) PC1-R1, more preferably glass fibers PC1-GF1, in the polymer composition PC1 is 50 weight-% or less, preferably 40 weight-% or less, more preferably 35 weight-% or less, more preferably 30 weight-% or less, more preferably 25 weight-% or less, more preferably 20 weight-% or less, more preferably 15 weight-% or less, more preferably 14 weight-% or less, more preferably 13 weight-% or less, more preferably 12 weight-% or less, more preferably 11 weight-% or less, more preferably 10 weight-% or less, more preferably 9 weight-% or less, more preferably 8 weight-% or less, more preferably 7 weight-% or less, more preferably 6 weight-% or less, more preferably 5 weight-% or less. Thus, the mechanical properties and flaming behavior are improved.

[0073] In preferred embodiment, a content of the one or more polymer(s) PC0-P1 in the polymer composition PC0 is 0.1 weight-% or more, preferably 1 weight-% or more, more preferably 3 weight-% or more, more preferably 5 weight-% or more, more preferably 10 weight-% or more, more preferably 20 weight-% or more, more preferably 30 weight-% or more, more preferably 40 weight-% or more, more preferably 50 weight-% or more, more preferably 60 weight-% or more, more preferably 70 weight-% or more, more preferably 80 weight-% or more, more preferably 90 weight-% or more. Thus, the mechanical properties and flaming behavior are improved, and the recycling content is enhanced.

[0074] In preferred embodiment, a content of the one or more polymer(s) PC0-P1 in the polymer composition PC0 is 99 weight-% or less, preferably 95 weight-% or less, more preferably 90 weight-% or less, more preferably 80 weight-% or less, more preferably 70 weight-% or less, more preferably 60 weight-% or less, more preferably 50 weight-% or less, more preferably 40 weight-% or less, more preferably 30 weight-% or less, more preferably 20 weight-% or less. Thus, the mechanical properties and flaming behavior are improved, and the recycling content is enhanced. In preferred embodiment, a content of the one or more polymer(s) PC1-P1 in the polymer composition PC1 is 0.1 weight-% or more, preferably 1 weight-% or more, more preferably 3 weight-% or more, more preferably 5 weight-% or more, more preferably 10 weight-% or more, more preferably 20 weight-% or more, more preferably 30 weight-% or more, more preferably 40 weight-% or more, more preferably 50 weight-% or more, more preferably 60 weight-% or more, more preferably 70 weight-% or more, more preferably 80 weight-% or more, more preferably 90 weight-% or more. Thus, the mechanical properties and flaming behavior are improved, and the recycling content is enhanced.

[0075] In preferred embodiment, a content of the one or more polymer(s) PC1-P1 in the polymer composition PC1 is 99 weight-% or less, preferably 95 weight-% or less, more preferably 90 weight-% or less, more preferably 80 weight-% or less, more preferably 70 weight-% or less, more preferably 60 weight-% or less, more preferably 50 weight-% or less, more preferably 40 weight-% or less, more preferably 30 weight-% or less, more preferably 20 weight-% or less. Thus, the mechanical properties and flaming behavior are improved, and the recycling content is enhanced.

[0076] In preferred embodiment, the polymer composition PC0 is obtainable by or obtained by mixing and annealing a mixture M0 comprising, preferably consisting of, one or more polymer(s) PC0-P1 and one or more additive(s) PC0- A1.

[0077] In preferred embodiment, the polymer composition PC0 comprises, preferably consists of, particles and wherein the particles are at least partially, preferably are, homogeneous.

[0078] In preferred embodiment, the one or more polymer(s) PC1-P1 comprises, preferably consists of, the one or more polymer(s) PC0-P1 and preferably the one or more polymer(s) M1-P1.

[0079] In preferred embodiment, the kind(s) of the one or more polymer(s) PC1-P1 is the same kind(s) as the one or more polymer(s) PC0-P1 , preferably and the one or more polymer(s) M1-P1.

[0080] In preferred embodiment, length Lant is the average length Lant and / or, preferably and, the thickness Tant is the average thickness Tant.

[0081] In preferred embodiment, length Lant and / or, preferably and, the thickness Tant is / are measured as described herein.

[0082] Methods and Definitions

[0083] If not further specified, preferably the following methods are used, and definitions apply. Tm and Tg were measured with DSC. DSC measurements were done according to DIN EN ISO 11357 using heat / cool Ing rate of 20K / min in a temperature range of 0 - 350°C on a Perkin Elmer DSC 8000. The tensile modulus [MPa] is measured according to ISO 527. The tensile stress at break [MPa] is measured according to ISO 527. The elongation at break [%] is measured according to ISO 527. The impact resistance [kJ / m2] is measured according to ISO 179-2 / 1 eU. The notched impact resistance [kJ / m2] is measured according to ISO 179-2 / 1 eA.

[0084] The UL94 V test is measured according to the UL 94 V method described in Underwriters Laboratories Inc. "Standard of Safety, Test for Flammability of Plastic Materials for Parts in Devices and Appliances", pp. 14 to 18, Northbrook, 1998. The test specimen has a thickness of 0.8 mm.

[0085] Glow-wire resistance was determined by the GWFI (glow-wire flammability index) test in accordance with DIN 60695- 2-12. The GWFI test, carried out on three test samples (plaques measuring 60 mm x 60 mm x h, whereas h is a thickness of 0.8 mm, 1 .0 mm or 1.5 mm), using a glowing wire at a temperature of 960°C. The test sample was pressed by a force of 1 newton for a period of 30 seconds against a heated glow-wire. The penetration depth of the glow-wire was restricted to 7 mm. The test is considered passed if the afterflame time of the test sample after removal of the glow-wire is less than 30 seconds and if tissue paper placed under the test sample does not ignite in three successive tests.

[0086] The length and thickness of the glass fibers were measured as follows. First, the polymer compound comprising the glass fibers is pyrolyzed at 650°C for 1 .5 h to obtain the glass fibers. Then, a tip of a spatula (about 5 mg) glass fibers is dispersed in a mixture of 100 mL water and 2 drops of glycerin and transferred to a petri dish, which is placed on the surface of an Epson perfection V850 Pro flatbed scanner. This type of scanner is able to analyze the length of about 80 000 fibers at the same time. Fibers shorter than 21 .2 pm cannot be detected due to the limited resolution of the scanner. Thus, fibers being shorter than 21 .2 pm are not considered.

[0087] Calculation of the value(s):

[0088] Arithmetic length of the glass fibers Lant = (Ltotai) / (LSUm); wherein Ltotai is the sum of the length of all fibers, and wherein Lsumis the sum of all fibers.

[0089] Glass fiber thickness is preferably determined as follows: First, the polymer compound comprising the glass fibers is pyrolyzed at 650°C for 1 .5 h to obtain the glass fibers. Then, a tip of a spatula (about 5 mg) glass fibers is dispersed in a mixture of 100 mL water and 2 drops of glycerin and transferred to a petri dish, which is placed under a microscope. The diameter of ten distinct glass fibers is measured electronically by an image capture system (by Company Zeiss). The average value of ten glass fibers is regarded as thickness of the glass fibers Tant. If not stated otherwise, normal conditions are used and / or applied, e.g., room temperature, preferably 25°C, and 1 bar, preferably 1013.25 mbar.

[0090] A person skilled in the art understands that the properties of additives, especially (glass) fibers, may change with every processing step like, for example, mixing and annealing. As a consequence, the type of additive before and after the processing step is the same, however, may have other properties, for example, the length of the (glass) fiber(s) may change during a mixing process.

[0091] A person skilled in the art understands that the properties of a polymer may change with every processing step like, for example, mixing and annealing. Consequently, the type of a polymer before and after the processing step is the same, however, may have different properties, for example, the molecular weight may change during a mixing process. For this reason, a person skilled in the art understands that the kind(s) of one or more polymer(s) PC1-P1 is the same kind(s) as the one or more polymer(s) PC0-P1, preferably and the one or more polymer(s) M1-P1. However, the properties of the one or more polymer(s) PC0-P1, preferably and the one or more polymer(s) M1-P1 may change during the processing steps, e.g. mixing and annealing. For example, if the one or more polymer(s) PC0-P1 is polyamide 6 and the one or more polymer(s) M1-P1 is polyamide 6, then the one or more polymer(s) PCI- PI is also polyamide 6, however, the properties, e.g. molecular weight and viscosity, of the polyamides may be different.

[0092] 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 method also apply for the polymer composition PC1, polymer product PP1 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 and / or as depicted in Figure 1.

[0093] 1 . Method comprising the following steps, preferably in this order: i) providing a polymer composition PCO, wherein the polymer composition PCO comprises, preferably consists of: a) one or more polymer(s) PC0-P1 , and b) one or more additive(s) PC0-A1 ; ii) mixing and annealing a mixture M1 to obtain a polymer composition PC1, wherein the mixture M1 comprises, preferably consists of: a) the polymer composition PCO, b) preferably one or more polymer(s) M1-P1; and preferably wherein the polymer composition PC1 comprises, preferably consists of: a) one or more polymer(s) PC1-P1, and b) one or more additive(s) PC1-A1 . Method, preferably according to embodiment 1, wherein the method comprises the step: iii) converting the polymer composition PC1 obtainable by or obtained by the method according to embodiment 1 or a chemical material obtainable by or obtained by the method according to embodiment 1 to obtain a product PRF1. Method according to embodiment 1 or 2, wherein the step ii) is performed in an extruder, preferably a twin-screw extruder. Method according to any one of the preceding embodiments, wherein the mixture M1 is mixed in step ii) for 5 s or more, preferably 10 s or more, more preferably 20 s or more, more preferably 30 s or more, more preferably 45 s or more, more preferably 60 s or more, more preferably 120 s or more, more preferably 180 s or more, more preferably 240 s or more. Method according to any one of the preceding embodiments, wherein the mixture M1 is mixed in step ii) for 15 min or less, preferably 10 min or less, more preferably 5 min or less, more preferably 240 s or less, more preferably 180 s or less, more preferably 120 s or less, more preferably 100 s or less, more preferably 80 s or less, more preferably 60 s or less, more preferably 45 s or less. Method according to any one of the preceding embodiments, wherein the mixture M1 is annealed in step ii) to 140 °C or more, preferably 160 °C or more, more preferably 170 °C or more, more preferably 180 °C or more, more preferably 190 °C or more, more preferably 200 °C or more, more preferably 210 °C or more, more preferably 220 °C or more, more preferably 230 °C or more, more preferably 240 °C or more, more preferably 250 °C or more, more preferably 260 °C or more, more preferably 270 °C or more, more preferably 280 °C or more, more preferably 290 °C or more, more preferably 300 °C or more. Method according to any one of the preceding embodiments, wherein the mixture M1 is annealed in step ii) to 500 °C or less, preferably 400 °C or less, more preferably 300 °C or less, more preferably 280 °C or less, more preferably 260 °C or less, more preferably 240 °C or less, more preferably 220 °C or less, more preferably 200 °C or less. Method according to any one of the preceding embodiments, wherein the mixture M1 is annealed in step ii) to (Tm of the one polymer composition PC0 or PC1 in °C) or more, preferably (Tm of the one polymer composition PC0 or PC1 in °C) + 10 °C or more, more preferably (Tm of the one polymer composition PC0 or PC1 in °C) + 20 °C or more, more preferably (Tm of the one polymer composition PC0 or PC1 in °C) + 30 °C or more, more preferably (Tm of the one polymer composition PC0 or PC1 in °C) + 40 °C or more, more preferably (Tm of the one polymer composition PCO or PC1 in °C) + 60 °C or more, more preferably (Tm of the one polymer composition PCO or PC1 in °C) + 80 °C or more, more preferably (Tm of the one polymer composition PCO or PC1 in °C) + 100 °C or more.

[0094] 9. Method according to any one of the preceding embodiments, wherein the mixture M1 is annealed in step ii) to (Tm of the one polymer composition PCO or PC1 in °C) + 200 °C or less, preferably (Tm of the one polymer composition PCO or PC1 in °C) + 150 °C or less, more preferably (Tm of the one polymer composition PCO or PC1 in °C) + 100 °C or less, more preferably (Tm of the one polymer composition PCO or PC1 in °C) + 80 °C or less, more preferably (Tm of the one polymer composition PCO or PC1 in °C) + 60 °C or less, more preferably (Tm of the one polymer composition PCO or PC1 in °C) + 40 °C or less, more preferably (Tm of the one polymer composition PCO or PC1 in °C) + 20 °C or less.

[0095] 10. Method according to any one of the preceding embodiments, wherein the throughput in step ii) is 0.5 kg / h or more and 25000 kg / h or less, preferably 1 kg / h or more and 10000 kg / h or less, more preferably 5 kg / h or more and 5000 kg / h or less, more preferably 10 kg / h or more and 2500 kg / h or less, more preferably 13 kg / h or more and 1000 kg / h or less, more preferably 16 kg / h or more and 500 kg / h or less, more preferably 19 kg / h or more and 300 kg / h or less.

[0096] 11 . Method according to any one of the preceding embodiments, wherein the method is a method for producing a polymer composition, preferably polymer composition PC1 and / or polymer product, preferably polymer product PP1.

[0097] 12. Use of a mixture M1 for the production of a polymer composition PC1, wherein the mixture M1 comprises, preferably consists of: a) a polymer composition PCO, and b) preferably one or more polymer(s) M1-P1; and wherein the polymer composition PCO comprises, preferably consists of: a) one or more polymer(s) PC0-P1 , and b) one or more additive(s) PC0-A1 ; and preferably wherein the polymer composition PC1 comprises, preferably consists of: a) one or more polymer(s) PC1-P1, and b) one or more additive(s) PC1-A1 .

[0098] 13. Method or use according to any one of the preceding embodiments, wherein the one or more additive(s) PC0-A1 comprises, preferably consists of, one or more reinforcement(s) PC0-R1. 14. Method or use according to any one of the preceding embodiments, wherein the mixture M1 comprises one or more additive(s) M1-A1, preferably wherein the one or more additive(s) M1-A1 and the one or more additive(s) PC0-A1 are not the same.

[0099] 15. Method or use according to any one of the preceding embodiments, wherein the mixture M1 comprises one or more additive(s) M1-A1, preferably wherein the one or more additive(s) M1-A1 comprises, preferably consists of, one or more reinforcement(s) M1-R1.

[0100] 16. Method or use according to any one of the preceding embodiments, wherein the one or more additive(s) PC1-A1 comprises, preferably consists of, one or more reinforcement(s) PC1-R1.

[0101] 17. Method or use according to any one of the preceding embodiments, with the proviso that the one or more additive(s) PC0-A1 comprises, preferably consists of, one or more reinforcement(s) PC0-R1 and / or the mixture M1 comprises one or more additive(s) M1-A1 wherein the one or more additive(s) M1-A1 comprises, preferably consists of, one or more reinforcement(s) M1-R1.

[0102] 18. Method or use according to any one of the preceding embodiments, wherein the one or more reinforcement(s) PC0-R1, M1-R1 and / or PC1-R1 is / are made of glass, more preferably wherein the one or more reinforcement(s) M1-R1, PC0-R1 and / or PC1-R1 comprise(s), preferably consist(s) of, glass fibers M1-GF1, PC0-GF1 and / or PC1-GF1.

[0103] 19. Method or use according to any one of the preceding embodiments, wherein the one or more reinforcement(s) PC0-R1, M1-R1 and / or PC1-R1 comprise(s), preferably consist(s) of, fibers or beads, more preferably fibers, more preferably glass fibers M1-GF1, PC0-GF1 and / or PC1-GF1.

[0104] 20. Method or use according to any one of the preceding embodiments, wherein a length Lant of the one or more reinforcement(s) PC0-R1 is 20 pm or more, preferably 30 pm or more, more preferably 40 pm or more, more preferably 50 pm or more, more preferably 60 pm or more, more preferably 70 pm or more, more preferably 80 pm or more, more preferably 90 pm or more, more preferably 100 pm or more, more preferably 110 pm or more, more preferably 120 pm or more, more preferably 130 pm or more, more preferably 140 pm or more.

[0105] 21 . Method or use according to any one of the preceding embodiments, wherein a length Lant of the one or more reinforcement(s) PC0-R1 is 1000 pm or less, preferably 750 pm or less, more preferably 500 pm or less, more preferably 250 pm or less, more preferably 225 pm or less, more preferably 200 pm or less, more preferably 180 pm or less, more preferably 170 pm or less, more preferably 160 pm or less, more preferably 150 pm or less, more preferably 140 pm or less. 22. Method or use according to any one of the preceding embodiments, wherein a thickness Tant of the one or more reinforcement(s) PC0-R1 is 1 pm or more and 40 pm or less, preferably 3 pm or more and 35 pm or less, more preferably 5 pm or more and 30 pm or less, more preferably 6 pm or more and 25 pm or less, more preferably 7 pm or more and 20 pm or less, more preferably 8 pm or more and 15 pm or less, more preferably 9 pm or more and 12 pm or less, more preferably about 10 pm.

[0106] 23. Method or use according to any one of the preceding embodiments, wherein a ratio [pm I pm] of a / the length Lant of the one or more reinforcement(s) PC0-R1 to a / the thickness Tarit of the one or more reinforcement(s) PC0-R1 is 1 or more and 1000 or less, preferably 2 or more and 500 or less, more preferably 4 or more and 250 or less, more preferably 6 or more and 100 or less, more preferably 8 or more and 50 or less, more preferably 10 or more and 25 or less, more preferably 12 or more and 20 or less, more preferably 13 or more and 15 or less, more preferably about 14.

[0107] 24. Method or use according to any one of the preceding embodiments, wherein a length Lant of the one or more reinforcement(s) M1-R1 is 20 pm or more, preferably 100 pm or more, more preferably 250 pm or more, more preferably 500 pm or more, more preferably 1000 pm or more, more preferably 2000 pm or more, more preferably 3000 pm or more, more preferably 4000 pm or more.

[0108] 25. Method or use according to any one of the preceding embodiments, wherein a length Lant of the one or more reinforcement(s) M1-R1 is 1 cm or less, preferably 9000 pm or less, more preferably 7500 pm or less, more preferably 6000 pm or less, more preferably 5000 pm or less, more preferably 4000 pm or less, more preferably 3000 pm or less, more preferably 2000 pm or less, more preferably 1000 pm or less, more preferably 500 pm or less, more preferably 250 pm or less.

[0109] 26. Method or use according to any one of the preceding embodiments, wherein a thickness Tant of the one or more reinforcement(s) M1-R1 is 1 pm or more and 40 pm or less, preferably 3 pm or more and 35 pm or less, more preferably 5 pm or more and 30 pm or less, more preferably 6 pm or more and 25 pm or less, more preferably 7 pm or more and 20 pm or less, more preferably 8 pm or more and 15 pm or less, more preferably 9 pm or more and 12 pm or less, more preferably about 10 pm.

[0110] 27. Method or use according to any one of the preceding embodiments, wherein a ratio [pm I pm] of a / the length Lant of the one or more reinforcement(s) M1-R1 to a / the thickness Tant of the one or more reinforcement(s) M1-R1 is 1 or more and 10000 or less, preferably 50 or more and 5000 or less, more preferably 75 or more and 2500 or less, more preferably 100 or more and 1000 or less, more preferably 200 or more and 700 or less, more preferably 250 or more and 600 or less, more preferably 300 or more and 500 or less, more preferably 350 or more and 450 or less, more preferably about 400. Method or use according to any one of the preceding embodiments, wherein a length Lant of the one or more reinforcement(s) PC1-R1 is 20 pm or more, preferably 30 pm or more, more preferably 40 pm or more, more preferably 50 pm or more, more preferably 60 pm or more, more preferably 70 pm or more, more preferably 80 pm or more, more preferably 90 pm or more, more preferably 100 pm or more, more preferably 110 pm or more, more preferably 115 pm or more. Method or use according to any one of the preceding embodiments, wherein a length Lant of the one or more reinforcement(s) PC1-R1 is 1000 pm or less, preferably 750 pm or less, more preferably 500 pm or less, more preferably 250 pm or less, more preferably 225 pm or less, more preferably 200 pm or less, more preferably 180 pm or less, more preferably 170 pm or less, more preferably 160 pm or less, more preferably 150 pm or less, more preferably 140 pm or less, more preferably 130 pm or less, more preferably 120 pm or less, more preferably about 118 pm. Method or use according to any one of the preceding embodiments, wherein a thickness Tant of the one or more reinforcement(s) PC1-R1 is 1 pm or more and 40 pm or less, preferably 3 pm or more and 35 pm or less, more preferably 5 pm or more and 30 pm or less, more preferably 6 pm or more and 25 pm or less, more preferably 7 pm or more and 20 pm or less, more preferably 8 pm or more and 15 pm or less, more preferably 9 pm or more and 12 pm or less, more preferably about 10 pm. Method or use according to any one of the preceding embodiments, wherein a ratio [pm I pm] of a / the length Lant of the one or more reinforcement(s) PC1-R1 to a / the thickness Tant of the one or more reinforcement(s) PC1-R1 is 1 or more and 1000 or less, preferably 2 or more and 500 or less, more preferably 4 or more and 250 or less, more preferably 6 or more and 100 or less, more preferably 8 or more and 50 or less, more preferably 9 or more and 20 or less, more preferably 10 or more and 15 or less, more preferably 11 or more and 13 or less, more preferably about 12. Method or use according to any one of the preceding embodiments, wherein the one or more additive(s) PC0-A1 comprise(s), preferably consist(s) of, one or more reinforcement(s) PC0-R1, and wherein the one or more additive(s) PC1-A1 comprise(s), preferably consist(s) of, one or more reinforcement(s) PC1-R1, and wherein a ratio [pm I pm] of a / the length Lant of the one or more reinforcement(s) PC1-R1 to a / the length Lant of the one or more reinforcement(s) PC0-R1 is 0.50 to 1 .00, preferably 0.60 to 0.95, more preferably 0.70 to 0.92, more preferably 0.80 to 0.90, more preferably 0.82 to 0.88. Method or use according to any one of the preceding embodiments, wherein the one or more additive(s) PC0-A1 comprise(s), preferably consist(s) of, one or more reinforcement(s) PC0-R1, and wherein the one or more additive(s) PC1-A1 comprise(s), preferably consist(s) of, one or more reinforcement(s) PC1-R1, and wherein a ratio [pm I pm] of a / the length Lant of the one or more reinforcement(s) PC0-R1 to a / the length Lant of the one or more reinforcement(s) PC1-R1 is 1.00 or more and 100.00 or less, preferably 1.05 or more and 25.0 or less, more preferably 1.08 or more and 20.0 or less, more preferably 1.10 or more and 10.0 or less, more preferably 1.15 or more and 5.0 or less, more preferably 1.18 or more and 2.0 or less. Method or use according to any one of the preceding embodiments, wherein the one or more additive(s) PC0-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) PC0-FR1, preferably wherein the one or more additive(s) PC0-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) PC0-FR1 and one or more reinforcement(s) PC0-R1. Method or use according to any one of the preceding embodiments, wherein the one or more additive(s) PC0-A1 do(es) not comprise one or more flame retardant(s) PC0-FR1 and / or one or more reinforcement(s) PC0-R1. Method or use according to any one of the preceding embodiments, wherein the mixture M1 comprises one or more additive(s) M1-A1, preferably wherein the one or more additive(s) M1-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) M1-FR1, more preferably wherein the one or more additive(s) M1-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) M1-FR1 and one or more reinforcement(s) M1-R1. Method or use according to any one of the preceding embodiments, wherein the one or more additive(s) M1-A1 doe(es) not comprise one or more flame retardant(s) M1-FR1 and / or one or more reinforcement(s) M1-R1. Method or use according to any one of the preceding embodiments, wherein the one or more additive(s) PC1-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) PC1-FR1. Method or use according to any one of the preceding embodiments, wherein the one or more flame retardant(s) M1-FR1, PC0-FR1 and / or PC1-FR1 comprise(s), preferably consist(s) of, a flame retardant comprising H, O, N and C, more preferably a complex comprising cyanuric acid, more preferably melamine cyanurate.

[0111] 40. Method or use according to any one of the preceding embodiments, with the proviso that the one or more additive(s) PC0-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) PC0-FR1 and / or the mixture M1 comprises one or more additive(s) M1-A1, wherein the one or more additive(s) M1-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) M1-FR1.

[0112] 41 . Method or use according to any one of the preceding embodiments, wherein the one or more polymer(s) PC0-P1, M1-P1 and / or PC1-P1 comprise(s), preferably consist(s) of, a thermoplastic polymer, preferably thermoplastic polyurethane and / or polyamide, more preferably PA6 and / or PA66, more preferably PA6.

[0113] 42. Method or use according to any one of the preceding embodiments, wherein the one or more polymer(s) PC0-P1, M1-P1 and / or PC1-P1 are predominantly the same, preferably are the same.

[0114] 43. Method or use according to any one of the preceding embodiments, wherein the mixture M1 comprises one or more polymer(s) M1-P1.

[0115] 44. Method or use according to any one of the preceding embodiments, wherein the mixture M1 comprises, preferably consists of, in weight-%: a) 5 to 95, preferably 20 to 70, polymer composition PC0, b) 0 to 95, preferably 5 to 40, one or more polymer(s) M1-P1, c) 0 to 50, preferably 0.1 to 30, one or more reinforcement(s) M1-R1, d) 0 to 35, preferably 3 to 25, one or more flame retardant(s) M1-FR1, and e) 0 to 20, preferably 0.1 to 15, one or more additive(s) A2.

[0116] 45. Method or use according to any one of the preceding embodiments, wherein a ratio [weight- % / weight-%] of the polymer composition PC0 to the one or more polymer(s) M1-P1 is 0.5 or more and 40.0 or less, preferably 1.0 or more and 20.0 or less, more preferably 1.5 or more and 10.0 or less, more preferably 2.0 or more and 5.0 or less, more preferably 2.5 or more and 3.5.

[0117] 46. Method or use according to any one of the preceding embodiments, wherein the polymer composition PC0 is at least partially waste or obtained from waste, preferably wherein the waste is post-consumer waste and / or post-industrial waste. 47. Method or use according to any one of the preceding embodiments, wherein an age of the polymer composition PCO is 1 day or more, preferably 1 week or more, more preferably

[0118] 1 year or more; and / or wherein an age of the polymer composition PCO is 100 years or less, preferably 50 years or less, more preferably 25 years or less.

[0119] 48. Method or use according to any one of the preceding embodiments, wherein the polymer composition PCO comprises, preferably consists of: a) 20 to 90, preferably 30 to 80, one or more polymer(s) PC0-P1 , and b) 5 to 50, preferably 10 to 35, one or more reinforcement(s) PC0-R1, c) 0 to 20, preferably 1 to 10, one or more flame retardant(s) PC0-FR1 , and d) 0 to 20, preferably 0.1 to 10, one or more additive(s) A2.

[0120] 49. Method or use according to any one of the preceding embodiments, wherein the polymer composition PC1 comprises, preferably consists of: a) 20 to 90, preferably 30 to 80, one or more polymer(s) PC1-P1 , and b) 5 to 50, preferably 10 to 35, one or more reinforcement(s) PC1-R1, c) 0 to 20, preferably 3 to 15, one or more flame retardant(s) PC1-FR1 , and d) 0 to 20, preferably 0.1 to 10, one or more additive(s) A2.

[0121] 50. Method or use according to any one of the preceding embodiments, wherein the polymer composition PCO, the polymer composition PC1 and / or the mixture M1 comprises one or more additive(s) A2.

[0122] 51 . Method or use according to any one of the preceding embodiments, wherein the one or more additive(s) A2 is / are selected from antioxidating agent(s), stabilizer(s), lubricant(s), mineral(s), chain extender(s), impact modifier(s), colorant(s), pigment(s), soot(s), talc(s), and mixtures thereof.

[0123] 52. Method or use according to any one of the preceding embodiments, wherein a tensile modulus of the polymer composition PC1 is 1000 MPa or more and 10000 MPa or less, preferably 4000 MPa or more and 8000 MPa or less, more preferably 4000 MPa or more and 7500 MPa or less, more preferably 5000 MPa or more and 7000 MPa or less, more preferably 5500 MPa or more and 6750 MPa or less, more preferably 6000 MPa or more and 6500 MPa or less, more preferably 6100 MPa or more and 6250 MPa or less, more preferably 6120 MPa or more and 6150 MPa or less.

[0124] 53. Method or use according to any one of the preceding embodiments, wherein a tensile stress at break of the polymer composition PC1 is 10 MPa or more and 1000 MPa or less, preferably 25 MPa or more and 500 MPa or less, more preferably 50 MPa or more and 250 MPa or less, more preferably 60 MPa or more and 200 MPa or less, more preferably 70 MPa or more and 150 MPa or less, more preferably 80 MPa or more and 125 MPa or less, more preferably 90 MPa or more and 110 MPa or less, more preferably 95 MPa or more and 100 MPa or less. Method or use according to any one of the preceding embodiments, wherein an elongation at break of the polymer composition PC1 is 1.1 % or more and 10.0 % or less, preferably 2.0 % or more and 9.0 % or less, more preferably 3.0 % or more and 7.0 % or less, more preferably

[0125] 3.5 % or more and 6.0 % or less, more preferably 3.8 % or more and 5.2 % or less, more preferably 4.1 % or more and 4.9 % or less, more preferably 4.2 % or more and 4.7 % or less, more preferably 4.3 % or more and

[0126] 4.5 % or less. Method or use according to any one of the preceding embodiments, wherein an impact resistance of the polymer composition PC1 is 10 kJ / m2or more and 100 kJ / m2or less, preferably 20 kJ / m2or more and 75 kJ / m2or less, more 30 kJ / m2or more and 50 kJ / m2or less, more 35 kJ / m2or more and 48 kJ / m2or less, more 40 kJ / m2or more and 44 kJ / m2or less. Method or use according to any one of the preceding embodiments, wherein a notched impact resistance of the polymer composition PC1 is 1 .0 kJ / m2or more and 20 kJ / m2or less, preferably 2.0 kJ / m2or more and 10 kJ / m2or less, more 2.5 kJ / m2or more and 8 kJ / m2or less, more 3.0 kJ / m2or more and 6 kJ / m2or less, more 3.5 kJ / m2or more and 4 kJ / m2or less. Method or use according to any one of the preceding embodiments, wherein the polymer composition PC1 exhibits in the UL94 V test a V-2, preferably a V-1 , more preferably a V-0. Method or use according to any one of the preceding embodiments, wherein the polymer composition PC1 exhibits a total after flame time of 2 s or more and 100 s or less, preferably 5 s or more and 80 s or less, more preferably 10 s or more and 60 s or less, more preferably 15 s or more and 40 s or less, more preferably 18 s or more and 30 s or less, more preferably 20 s or more and 25 s or less. Method or use according to any one of the preceding embodiments, wherein the polymer composition PC1 passes the GWFI test. Polymer composition, preferably polymer composition PC1 , obtained by or obtainable by the method according to any one of the preceding embodiments. Polymer product, preferably polymer product PP1, obtained by or obtainable by the method according to any one of the preceding embodiments. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein the polymer composition PCO, the polymer composition PC1 and / or the polymer product PP1 is / are or is / are a part of: a part of a car; preferably cylinder head cover, engine cover, housing for charge air cooler, coating, cover, elevator load bearing assembly, foil, fiber, film, foam, damping element, drive belts for machines, charge air cooler flap, intake pipe, intake manifold, connector, gasket, gear wheel, fan wheel, cooling water box, hose, housing, housing part for heat exchanger, coolant cooler, charge air cooler, laminate, middle sole of a shoe, lining in vehicles, modifier for thermoplastic materials, molded body, roofing or flooring for buildings or vehicles, non-woven fabric, packaging material, passenger conveyer, hadrails for passenger conveyers, profile, roll, roping arrangements, saddle, shoe sole, strap, thermostat, water pump, radiator, fastening part, part of battery system for electromobility, dashboard, pillow, steering column switch, seat, headrest, center console, transmission component, door module, A, B, C or D pillar cover, spoiler, door handle, exterior mirror, windscreen wiper, windscreen wiper protection housing, wiper blade, decorative grill, cover strip, roof rail, window frame, sunroof frame, antenna panel, headlight and taillight, engine cover, cylinder head cover, intake manifold, airbag, steering wheel, cushion, or coating; a cloth; preferably shirt, trousers, pullover, boot, shoe, shoe sole, tight or jacket; an electrical part; preferably electrical or electronic passive or active component, cable, cable connector, cable sheeting cell-phone, circuit breaker, circuit board, printed circuit board, terminal block, housing component, foil, line, switch, switch gear, plug, socket, distributor, relay, resistor, capacitor, inductor, bobbin, lamp, diode, LED, transistor, connector, regulator, integrated circuit (IC), processor, controller, memory, sensor, microswitch, microbutton, semiconductor, reflector housing for lightemitting diodes (LED), fastener for electrical or electronic component, solar module, spacer, bolt, strip, slide-in guide, screw, nut, television, trailing cable, film hinge, snap hook (snap-in), or spring tongue; a consumer product, agricultural product or pharmaceutical product; preferably tennis string, climbing rope, bristle, brush, artificial grass, 3D printing filament, grass trimmer, zipper, hook and loop fastener, paper machine clothing, extrusion coating, fishing line, fishing net, offshore line and rope, vial, syringe, ampoule, bottle, bag; preferably organic waste bag, vegetable or fruit bag; sliding element, spindle nut, chain conveyor, plain bearing, roller, wheel, gear, roller, ring gear, screw and spring dampers, hose, pipeline, cable sheathing, socket, switch, cable tie, fan wheel, carpet, non-woven article, box or bottle for cosmetics, mattress, cushion, insulation, refrigerator, freezer, insulating box for cold or hot goods, water heater, hot water storage tank, pipe, insulation board, insulation panel, detergent, dishwasher tabs or powder, shampoo, body wash, shower gel, soap, fertilizer, mulch film, fungicide, or pesticide; a packaging; preferably for the food industry; preferably blown or cast film, more preferably mono- or multi-layer blown film or mono- or multi-layer cast film; axially stretched film, preferably biaxial or multiaxial, or laminating film, a molded article; preferably an injection molded article, more preferably a coffee capsule; a thermoformed article; preferably a coffee capsule; or a part of a construction; preferably a rotor blade, insulating material; preferably acoustic or thermal insulating material; frame, housing, wall, coating, fagade, window, door, or separating wall. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein a / the content of the polymer composition PCO in the polymer composition PC1 and / or mixture M1 and / or polymer product PP1 is 1 weight-% or more, preferably 2 weight-% or more, more preferably 5 weight- % or more, more preferably 15 weight-% or more, more preferably 30 weight-% or more, more preferably 40 weight-% or more, more preferably 60 weight-% or more, more preferably 80 weight-% or more, more preferably 90 weight-% or more, more preferably 95 weight-% or more; and / or wherein a / the content of the polymer composition PCO in the polymer composition PC1 and / or mixture M1 and / or polymer product PP1 is 100 weight-% or less, preferably 95 weight-% or less, more preferably 90 weight-% or less, more preferably 50 weight-% or less, more preferably 25 weight-% or less, more preferably 10 weight-% or less; and preferably wherein the content is determined based on identity preservation and / or segregation and / or mass balance and / or book and claim chain of custody models, preferably based on mass balance, preferably the International Sustainability and Carbon Certification (ISCC) standard. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein the polymer composition PC1 and / or polymer product PP1 exhibits enhanced recycling content, improved mechanical properties, and / or improved flame retardancy; and / or the method and / or use leads to an upcycled product. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein the polymer composition PC1 comprises, preferably consists of: a) one or more polymer(s) PC1-P1, and b) one or more additive(s) PC1-A1 . 66. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein a content of the one or more additive(s) PC0-A1, preferably the one or more flame retardant(s) PCO- FR1 and / or the one or more reinforcement(s) PC0-R1, more preferably the one or more flame retardant(s) PC0-FR1, more preferably melamine cyanurate, in the polymer composition PCO is 0.1 weight-% or more, preferably 1 weight-% or more, more preferably 2 weight-% or more, more preferably 3 weight-% or more, more preferably 4 weight-% or more, more preferably 5 weight-% or more, more preferably 6 weight-% or more, more preferably 7 weight-% or more, more preferably 8 weight-% or more, more preferably 9 weight-% or more, more preferably 10 weight-% or more, more preferably 11 weight-% or more, more preferably 12 weight-% or more, more preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 30 weight-% or more.

[0127] 67. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein a content of the one or more additive(s) PC0-A1, preferably the one or more flame retardant(s) PC0- FR1 and / or the one or more reinforcement(s) PC0-R1, more preferably the one or more flame retardant(s) PC0-FR1, more preferably melamine cyanurate, in the polymer composition PCO is 50 weight-% or less, preferably 40 weight-% or less, more preferably 35 weight-% or less, more preferably 30 weight-% or less, more preferably 25 weight-% or less, more preferably 20 weight-% or less, more preferably 15 weight-% or less, more preferably 14 weight-% or less, more preferably 13 weight-% or less, more preferably 12 weight-% or less, more preferably 11 weight-% or less, more preferably 10 weight-% or less, more preferably 9 weight- % or less, more preferably 8 weight-% or less, more preferably 7 weight-% or less, more preferably 6 weight- % or less, more preferably 5 weight-% or less.

[0128] 68. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein a content of the one or more additive(s) M1-A1, preferably the one or more flame retardant(s) M1- FR1 and / or the one or more reinforcement(s) M1-R1, more preferably the one or more flame retardant(s) M1- FR1, more preferably melamine cyanurate, in the mixture M1 is 0.1 weight-% or more, preferably 1 weight-% or more, more preferably 2 weight-% or more, more preferably 3 weight-% or more, more preferably 4 weight- % or more, more preferably 5 weight-% or more, more preferably 6 weight-% or more, more preferably 7 weight-% or more, more preferably 8 weight-% or more, more preferably 9 weight-% or more, more preferably 10 weight-% or more, more preferably 11 weight-% or more, more preferably 12 weight-% or more, more preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 30 weight-% or more.

[0129] 69. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein a content of the one or more additive(s) M1-A1, preferably the one or more flame retardant(s) M1- FR1 and / or the one or more reinforcement(s) M1-R1, more preferably the one or more flame retardant(s) M1- FR1, more preferably melamine cyanurate, in the mixture M1 is 50 weight-% or less, preferably 40 weight-% or less, more preferably 35 weight-% or less, more preferably 30 weight-% or less, more preferably 25 weight- % or less, more preferably 20 weight-% or less, more preferably 15 weight-% or less, more preferably 14 weight-% or less, more preferably 13 weight-% or less, more preferably 12 weight-% or less, more preferably 11 weight-% or less, more preferably 10 weight-% or less, more preferably 9 weight-% or less, more preferably 8 weight-% or less, more preferably 7 weight-% or less, more preferably 6 weight-% or less, more preferably 5 weight-% or less. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein a content of the one or more additive(s) PC1-A1, preferably the one or more flame retardant(s) PC1- FR1 and / or the one or more reinforcement(s) PC1-R1, more preferably the one or more flame retardant(s) PC1-FR1, more preferably melamine cyanurate, in the polymer composition PC1 is 0.1 weight-% or more, preferably 1 weight-% or more, more preferably 2 weight-% or more, more preferably 3 weight-% or more, more preferably 4 weight-% or more, more preferably 5 weight-% or more, more preferably 6 weight-% or more, more preferably 7 weight-% or more, more preferably 8 weight-% or more, more preferably 9 weight-% or more, more preferably 10 weight-% or more, more preferably 11 weight-% or more, more preferably 12 weight-% or more, more preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 30 weight-% or more. Polymer composition PC 1 , polymer product PP 1 , method or use according to any one of the preceding embodiments, wherein a content of the one or more additive(s) PC1-A1, preferably the one or more flame retardant(s) PC1- FR1 and / or the one or more reinforcement(s) PC1-R1, more preferably the one or more flame retardant(s) PC1-FR1, more preferably melamine cyanurate, in the polymer composition PC1 is 50 weight-% or less, preferably 40 weight-% or less, more preferably 35 weight-% or less, more preferably 30 weight-% or less, more preferably 25 weight-% or less, more preferably 20 weight-% or less, more preferably 15 weight-% or less, more preferably 14 weight-% or less, more preferably 13 weight-% or less, more preferably 12 weight-% or less, more preferably 11 weight-% or less, more preferably 10 weight-% or less, more preferably 9 weight- % or less, more preferably 8 weight-% or less, more preferably 7 weight-% or less, more preferably 6 weight- % or less, more preferably 5 weight-% or less. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein a content of the one or more additive(s) PC0-A1, preferably the one or more reinforcement(s) PC0- R1, more preferably glass fibers PC0-GF1, in the polymer composition PC0 is 0.1 weight-% or more, preferably 1 weight-% or more, more preferably 3 weight-% or more, more preferably 5 weight-% or more, more preferably 8 weight-% or more, more preferably 10 weight-% or more, more preferably 12 weight-% or more, more preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 25 weight-% or more, more preferably 30 weight-% or more, more preferably 35 weight-% or more, more preferably 40 weight-% or more, more preferably 50 weight-% or more. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein a content of the one or more additive(s) PC0-A1, preferably the one or more reinforcement(s) PC0- R1, more preferably glass fibers PC0-GF1, in the polymer composition PC0 is 50 weight-% or less, preferably 40 weight-% or less, more preferably 35 weight-% or less, more preferably 30 weight-% or less, more preferably 25 weight-% or less, more preferably 20 weight-% or less, more preferably 15 weight-% or less, more preferably 14 weight-% or less, more preferably 13 weight-% or less, more preferably 12 weight-% or less, more preferably 11 weight-% or less, more preferably 10 weight-% or less, more preferably 9 weight-% or less, more preferably 8 weight-% or less, more preferably 7 weight-% or less, more preferably 6 weight-% or less, more preferably 5 weight-% or less. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein a content of the one or more additive(s) M1-A1, preferably the one or more reinforcement(s) M1-R1, more preferably glass fibers M1-GF1, in the mixture M1 is 50 weight-% or less, preferably 40 weight-% or less, more preferably 35 weight-% or less, more preferably 30 weight-% or less, more preferably 25 weight-% or less, more preferably 20 weight-% or less, more preferably 15 weight-% or less, more preferably 14 weight- % or less, more preferably 13 weight-% or less, more preferably 12 weight-% or less, more preferably 11 weight-% or less, more preferably 10 weight-% or less, more preferably 9 weight-% or less, more preferably 8 weight-% or less, more preferably 7 weight-% or less, more preferably 6 weight-% or less, more preferably 5 weight-% or less. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein a content of the one or more additive(s) M1-A1, preferably the one or more reinforcement(s) M1-R1, more preferably glass fibers M1-GF1, in the mixture M1 is 0.1 weight-% or more, preferably 1 weight-% or more, more preferably 3 weight-% or more, more preferably 5 weight-% or more, more preferably 8 weight-% or more, more preferably 10 weight-% or more, more preferably 12 weight-% or more, more preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 25 weight-% or more, more preferably 30 weight-% or more, more preferably 35 weight-% or more, more preferably 40 weight-% or more, more preferably 50 weight-% or more. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein a content of the one or more additive(s) PC1-A1, preferably the one or more reinforcement(s) PC1- R1, more preferably glass fibers PC1-GF1, in the polymer composition PC1 is 0.1 weight-% or more, preferably 1 weight-% or more, more preferably 3 weight-% or more, more preferably 5 weight-% or more, more preferably 8 weight-% or more, more preferably 10 weight-% or more, more preferably 12 weight-% or more, more preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 25 weight-% or more, more preferably 30 weight-% or more, more preferably 35 weight-% or more, more preferably 40 weight-% or more, more preferably 50 weight-% or more. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein a content of the one or more additive(s) PC1-A1, preferably the one or more reinforcement(s) PC1- R1, more preferably glass fibers PC1-GF1, in the polymer composition PC1 is 50 weight-% or less, preferably 40 weight-% or less, more preferably 35 weight-% or less, more preferably 30 weight-% or less, more preferably 25 weight-% or less, more preferably 20 weight-% or less, more preferably 15 weight-% or less, more preferably 14 weight-% or less, more preferably 13 weight-% or less, more preferably 12 weight-% or less, more preferably 11 weight-% or less, more preferably 10 weight-% or less, more preferably 9 weight-% or less, more preferably 8 weight-% or less, more preferably 7 weight-% or less, more preferably 6 weight-% or less, more preferably 5 weight-% or less. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein a content of the one or more polymer(s) PC0-P1 in the polymer composition PC0 is 0.1 weight-% or more, preferably 1 weight-% or more, more preferably 3 weight-% or more, more preferably 5 weight-% or more, more preferably 10 weight-% or more, more preferably 20 weight-% or more, more preferably 30 weight-% or more, more preferably 40 weight-% or more, more preferably 50 weight-% or more, more preferably 60 weight-% or more, more preferably 70 weight-% or more, more preferably 80 weight-% or more, more preferably 90 weight-% or more. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein a content of the one or more polymer(s) PC0-P1 in the polymer composition PC0 is 99 weight-% or less, preferably 95 weight-% or less, more preferably 90 weight-% or less, more preferably 80 weight-% or less, more preferably 70 weight-% or less, more preferably 60 weight-% or less, more preferably 50 weight-% or less, more preferably 40 weight-% or less, more preferably 30 weight-% or less, more preferably 20 weight- % or less. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein a content of the one or more polymer(s) PC1-P1 in the polymer composition PC1 is 0.1 weight-% or more, preferably 1 weight-% or more, more preferably 3 weight-% or more, more preferably 5 weight-% or more, more preferably 10 weight-% or more, more preferably 20 weight-% or more, more preferably 30 weight-% or more, more preferably 40 weight-% or more, more preferably 50 weight-% or more, more preferably 60 weight-% or more, more preferably 70 weight-% or more, more preferably 80 weight-% or more, more preferably 90 weight-% or more. Polymer composition PC 1 , polymer product PP 1 , method or use according to any one of the preceding embodiments, wherein a content of the one or more polymer(s) PC1-P1 in the polymer composition PC1 is 99 weight-% or less, preferably 95 weight-% or less, more preferably 90 weight-% or less, more preferably 80 weight-% or less, more preferably 70 weight-% or less, more preferably 60 weight-% or less, more preferably 50 weight-% or less, more preferably 40 weight-% or less, more preferably 30 weight-% or less, more preferably 20 weight- % or less. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein the polymer composition PC0 is obtainable by or obtained by mixing and annealing a mixture M0 comprising, preferably consisting of, one or more polymer(s) PC0-P1 and one or more additive(s) PC0-A1. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein the polymer composition PC0 comprises, preferably consists of, particles and wherein the particles are at least partially, preferably are, homogeneous. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein the one or more polymer(s) PC1-P1 comprises, preferably consists of, the one or more polymer(s) PC0-P1 and preferably the one or more polymer(s) M1-P1. Polymer composition PC1, polymer product PP1, method or use according to any one of the preceding embodiments, wherein the kind(s) of the one or more polymer(s) PC1-P1 is the same kind(s) as the one or more polymer(s) PC0-P1 , preferably and the one or more polymer(s) M1-P1.

[0130] 86. Polymer composition PC1 , polymer product PP1, method or use according to any one of the preceding embodiments, wherein length Lant is the average length Lant and / or, preferably and, the thickness Tant is the average thickness Tant, preferably and wherein the wherein length Lant and / or, preferably and, the thickness Tant is / are measured as described in the description.

[0131] 87. Polymer composition PC1 , polymer product PP1, method or use according to any one of the preceding embodiments, wherein length Lant and / or, preferably and, the thickness Tant is / are measured as described in the description.

[0132] Experimental Section

[0133] Component A: Polyamide-6 (Ultramid® B27 from BASF SE).

[0134] Component B: Recyclate comprising of polyamide-6 and 30% glass fibers (Lant = 142 pm; Tant = 10 pm).

[0135] Component C: Melamine cyanurate (Melapur® MC 25 from BASF SE)

[0136] Component D: Standard chopped glass fiber for polyamides (Lant = 4.0 mm, Tant = 10.0 pm).

[0137] Component E: Mixture of 3,3’-bis(3,5-di-tert-butyl-4-hydroxyphenyl)-N,N’-hexamethylene-dipropionamide (CAS No. 23128-74-7), ethylenebisstearamide (CAS No. 100-30-5), and calcium stearate (CAS No. 1592-23-0).

[0138] The sum of the proportions of components A) to E) in table 1 is 100% by weight. Table 1 shows the constitutions of the molding compositions and the results of the tests.

[0139] The individual components A to E were mixed as described in table 1 in a ZSK 26 (Berstorff) twin-screw extruder at about 250 to 270°C with flat temperature profile and 20 kg / h throughpout, discharged in the form of strand, cooled until pelletizable and pelletized.

[0140] The test samples for the tests listed in table 1 were injection-molded in an Arburg 420C injection-molding machine at melt temperature about 250 to 290°C and mold temperature about 80°C. Table 1 : Compositions and experimental results of comparative example 1 and inventive example 1.

[0141] Example unit comp, example 1 inv. example 1

[0142] A weight- % 71.35 24.35

[0143] B weight-% - 67

[0144] C weight-% 8 8

[0145] D weight-% 20

[0146] E weight-% 0.65 0.65 tensile modulus MPa 7 801 6 128 tensile stress at break MPa 142 97 elongation at break % 3.6 4.3 impact resistance kJ / m270 42 notched impact resistance kJ / m26.8 3.6

[0147] UL94 V test at 0.8 mm - V-2 V-2 total afterflame time s 46 23

[0148] GWFI 960°C (0.8 mm, 1.0 mm, 1.5 not passed passed mm)

[0149] Larit m 282 118

[0150] Figures

[0151] In Figure 1, a method according to the invention is depicted. In step i), a polymer composition PCO wherein the polymer composition PCO comprises one or more polymer(s) PC0-P1 and one or more additive(s) PC0-A1 is provided and in step ii), a mixture M1 is mixed and annealed to obtain a polymer composition PC1, wherein the mixture M1 comprises the polymer composition PCO and preferably one or more polymer(s) M1-P1.

Claims

Claims1 . Method comprising the following steps:I) providing a polymer composition PCO, wherein the polymer composition PCO comprises, preferably consists of: a) one or more polymer(s) PC0-P1 , and b) one or more additive(s) PC0-A1 ; ii) mixing and annealing a mixture M1 to obtain a polymer composition PC1, wherein the mixture M1 comprises, preferably consists of: a) the polymer composition PCO, b) preferably one or more polymer(s) M1-P1 .

2. Method, preferably according to claim 1, comprising the following steps:I) providing a polymer composition PCO, wherein the polymer composition PCO comprises, preferably consists of: a) one or more polymer(s) PC0-P1 , and b) one or more additive(s) PC0-A1 ; ii) mixing and annealing a mixture M1 to obtain a polymer composition PC1, wherein the mixture M1 comprises, preferably consists of: a) the polymer composition PCO, b) preferably one or more polymer(s) M1-P1; and with the proviso that the one or more additive(s) PC0-A1 comprises, preferably consists of, one or more reinforcement(s) PC0-R1 and / or the mixture M1 comprises one or more additive(s) M1-A1 wherein the one or more additive(s) M1-A1 comprises, preferably consists of, one or more reinforcement(s) M1-R1; and / or with the proviso that the one or more additive(s) PC0-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) PC0-FR1 and / or the mixture M1 comprises one or more additive(s) M1-A1, wherein the one or more additive(s) M1-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) M1-FR1.

3. Method according to any one of the preceding claims, wherein the one or more additive(s) PC0-A1 comprises, preferably consists of, one or more reinforcement(s) PC0-R1.

4. Method according to any one of the preceding claims, with the proviso that the polymer composition PCO comprises one or more additive(s) PC0-A1, wherein the one or more additive(s) PC0-A1 comprises, preferably consists of, one or more flame retardant(s) PC0-FR1 and / or the mixture M1 comprises one or more additive(s) M1-A1 wherein the one or more additive(s) M1-A1 comprises, preferably consists of, one or more flame retardant(s) M1-FR15. Method according to any one of the preceding claims, wherein the mixture M1 is mixed in step ii) for 5 s or more, preferably 10 s or more, more preferably 20 s or more, more preferably 30 s or more, more preferably 45 s or more, more preferably 60 s or more, more preferably 120 s or more, more preferably 180 s or more, more preferably 240 s or more; and / or wherein the mixture M1 is mixed in step II) for 15 min or less, preferably 10 min or less, more preferably 5 min or less, more preferably 240 s or less, more preferably 180 s or less, more preferably 120 s or less, more preferably 100 s or less, more preferably 80 s or less, more preferably 60 s or less, more preferably 45 s or less; and / or wherein the mixture M1 is annealed in step ii) to 140 °C or more, preferably 160 °C or more, more preferably 170 °C or more, more preferably 180 °C or more, more preferably 190 °C or more, more preferably 200 °C or more, more preferably 210 °C or more, more preferably 220 °C or more, more preferably 230 °C or more, more preferably 240 °C or more, more preferably 250 °C or more, more preferably 260 °C or more, more preferably 270 °C or more, more preferably 280 °C or more, more preferably 290 °C or more, more preferably 300 °C or more; and / or wherein the mixture M1 is annealed in step ii) to 500 °C or less, preferably 400 °C or less, more preferably 300 °C or less, more preferably 280 °C or less, more preferably 260 °C or less, more preferably 240 °C or less, more preferably 220 °C or less, more preferably 200 °C or less.

6. Method, preferably according to any one of the preceding claims, comprising the step: iii) converting the polymer composition PC1 obtainable by or obtained by the method according to any one of the preceding claims or a chemical material obtainable by or obtained by the method according to any one of the preceding claims to obtain a product PRF1.

7. Method according to any one of the preceding claims, wherein the one or more reinforcement(s) PC0-R1 and / or M1-R1 are made of glass, more preferably wherein the one or more reinforcement(s) M1-R1 and / or PC0-R1 comprise, preferably consist of glass fibers M1-GF1 and / or PC0-GF1.

8. Method according to any one of the preceding claims, wherein a ratio [pm I pm] of a / the length Lant of the one or more reinforcement(s) PC0-R1 to a / the thickness of the one or more reinforcement(s) PC0-R1 is 1 or more and 1000 or less, preferably 2 or more and 500 or less, more preferably 4 or more and 250 or less, more preferably 6 or more and 100 or less, more preferably 8 or more and 50 or less, more preferably 10 or more and 25 or less, more preferably 12 or more and 20 or less, more preferably 13 or more and 15 or less, more preferably about 14.

9. Method according to any one of the preceding claims,wherein the polymer composition PC1 comprises one or more additive(s) PC1-A1, and wherein the one or more additive(s) PC0-A1 comprise(s), preferably consist(s) of, one or more reinforcement(s) PC0-R1, and wherein the one or more additive(s) PC1-A1 comprise(s), preferably consist(s) of, one or more reinforcement(s) PC1-R1, and wherein a ratio [ m I pm] of a / the length Lant of the one or more reinforcement(s) PC1-R1 to a / the length Lant of the one or more reinforcement(s) PC0-R1 is 0.50 to 1 .00, preferably 0.60 to 0.95, more preferably 0.70 to 0.92, more preferably 0.80 to 0.90, more preferably 0.82 to 0.88; and / or10. Method according to any one of the preceding claims, wherein the mixture M1 comprises one or more additive(s) M1-A1, preferably wherein the one or more additive(s) M1-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) M1-FR1, preferably wherein the one or more additive(s) M1-A1 comprise(s), preferably consist(s) of, one or more flame retardant(s) M1-FR1 and one or more reinforcement(s) M1-R1.11 . Method according to any one of the preceding claims, wherein the one or more flame retardant(s) M1-FR1 and / or PC0-FR1 comprise(s), preferably consist(s) of, a flame retardant comprising H, O, N and C, more preferably a complex comprising cyanuric acid, more preferably melamine cyanurate.

12. Polymer composition obtained by or obtainable by the method according to any one of the preceding claims.

13. Polymer product obtained by or obtainable by the method according to any one of claims 1 to 12.

14. Use of a mixture M1 for the production of a polymer composition PC1, wherein the mixture M1 comprises, preferably consists of: a) a polymer composition PC0, and b) preferably one or more polymer(s) M1-P1; and wherein the polymer composition PC0 comprises, preferably consists of: a) one or more polymer(s) PC0-P1 , and b) one or more additive(s) PC0-A1 .

15. Method, Polymer composition PC1, Polymer product PP1, and / or use according to any one of the preceding claims, wherein the polymer composition PC1 and / or polymer product PP1 exhibits enhanced recycling content, improved mechanical properties, and / or improved flame retardancy; and / or the method and / or use leads to an upcycled product.

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