Method for cleaning a reactor

Abstract

Herein a specific method for cleaning a reactor and the production of a product is disclosed.

Description

Method for cleaning a reactorTo produce a polymer commonly specific reactors are used. After a certain time, these reactors must be cleaned because impurities deposit on the inner wall of the reactor and deteriorate the quality of the produced polymer. For the cleaning, often toxic, environmentally unfriendly, very acidic or alkaline and therefore corrosive chemicals are used, which are heated up in the reactor to high temperatures under high pressures. This leads to a huge amount of toxic waste and to a short lifetime of the reactor due to corrosion. In addition, the cleaning of the reactor is often insufficient, and the chemicals used for cleaning contaminate the products produced after the cleaning procedure. For this reason, the object of the present invention is to provide a method, which exhibits one or more of the following: reduced toxicity, reduced reactor corrosion, balanced pH value of the used composition, reduced contamination of the product, improved environmental friendliness, improved cleaning, and / or reduced inorganic waste.The object is at least partially solved by a method comprising the steps, preferably in this order: iv) introducing a cleaning composition CC1 in a reactor R1 for the production of a polymer P1 and / or polymer composition PC1 comprising the polymer P1 ; and v) removing the cleaning composition CC1 from the reactor R1 ; wherein the polymer P1 is obtainable or obtained by the reaction of a composition Acomprising a monomer A1 , wherein the monomer A1 comprises a functional group FG1 ; wherein the cleaning composition CC1 comprises a compound C1 comprising the functional group FG1.The object is further at least partially solved by a method, comprising the steps, preferably in this order:I) providing a reactor R1 for the production of a polymer P1 and / or polymer composition PC1 comprising the polymer P1 , ii) preferably producing the polymer P1 and / or polymer composition PC1 comprising the polymer P1 in the reactor R1 ; ill) preferably removing the polymer P1 and / or polymer composition PC1 comprising the polymer P1 from the reactor R1 ; iv) introducing a cleaning composition CC1 in the reactor R1 ; and v) removing the cleaning composition CC1 from the reactor R1 ; vi) preferably introducing a cleaning composition CC2 in the reactor R1 ; and vii) preferably removing the cleaning composition CC2 from the reactor R1 ; viii) preferably producing the polymer P1 and / or polymer composition PC1 comprising the polymer P1 in the reactorix) preferably converting the polymer P1 and / or polymer composition PC1 comprising the polymer P1 to obtain a product PRF1 ; wherein the polymer P1 is obtainable or obtained by the reaction of a composition Acomprising a monomer A1 , wherein the monomer A1 comprises a functional group FG1 ; and wherein the cleaning composition CC1 comprises a compound C1 comprising the functional group FG1.The object is also at least partially solved by a use of a cleaning composition CC1 for the treatment, preferably cleaning, of a reactor R1 for the production of a polymer P1 and / or polymer composition PC1 comprising the polymer P1 ; wherein the polymer P1 is obtainable or obtained by the reaction of a composition Acomprising a monomer A1 , wherein the monomer A1 comprises a functional group FG1 ; wherein the cleaning composition CC1 comprises a compound C1 comprising the functional group FG1.Further, the object is at least partially solved by a polymer P1, polymer composition PC1 , and / or product PRF1 , obtainable by or obtained by a method described herein. Thus, the contamination of the product is reduced.In a preferred embodiment, the method comprises step ii); and / or the method comprises step iii).In a preferred embodiment, the method comprises step vi); and / or the method comprises step vii). Thus, the cleaning is improved and the contamination of the product is reduced.In a preferred embodiment, the method comprises step viii); and / or the method comprises step ix). Thus, a product is obtained exhibiting reduced contamination.In a preferred embodiment, after step iv) and before step v), the method comprises the step: iv-1) annealing the cleaning composition CC1. Thus, the cleaning is improved.In a preferred embodiment, in the annealing step iv-1), the cleaning composition CC1 is annealed (at least once) to a temperature T1 of 30 °C or more, preferably 50 °C or more, more preferably 100 °C or more, more preferably 110 °C or more, more preferably 120 °C or more, more preferably 130 °C or more, more preferably 140 °C or more, more preferably 150 °C or more, 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 in the annealing step iv-1), the cleaning composition CC1 is annealed to a temperature T1 of 1000 °C or less, preferably 750 °C or less, more preferably 500 °C or less, more preferably 450 °C or less, more preferably 400 °C or less, more preferably 350 °C or less, more preferably 300 °C or less, more preferably 250 °C or less, more preferably 200 °C or less, more preferably 150 °C or less, morepreferably 100 °C or less, more preferably 50 °C or less. Thus, the cleaning is improved and the reactor corrosion is reduced.In a preferred embodiment, in the annealing step iv-1), the cleaning composition CC1 is annealed to a temperature T1 for 1 s or more, preferably 1 min or more, more preferably 10 min or more, more preferably 30 min or more, more preferably 1 h or more, more preferably 2 h or more, more preferably 3 h or more, more preferably 4 h or more, more preferably 5 h or more, more preferably 6 h or more, more preferably 7 h or more, more preferably 8 h or more, more preferably 9 h or more, more preferably 10 h or more, more preferably 1 day or more, more preferably 1 week or more; and / or in the annealing step iv-1), the cleaning composition CC1 is annealed to a temperature T1 for 1 month or less, preferably 1 week or less, more preferably 1 day or less, more preferably 10 hours or less, more preferably 9 hours or less, more preferably 8 hours or less, more preferably 7 hours or less, more preferably 6 hours or less, more preferably 5 hours or less, more preferably 4 hours or less, more preferably 3 hours or less, more preferably 2 hours or less, more preferably 1 hours or less, more preferably 30 minutes or less, more preferably 10 minutes or less, more preferably 5 minutes or less, more preferably 1 minute or less. Thus, the cleaning is improved and the reactor corrosion is reduced.In a preferred embodiment, in the annealing step iv-1), the pressure in the reactor R1 is 1 bar or more, preferably 2 bar or more, more preferably 4 bar or more, more preferably 6 bar or more, more preferably 8 bar or more, more preferably 10 bar or more, more preferably 12 bar or more, more preferably 14 bar or more, more preferably 16 bar or more, more preferably 18 bar or more, more preferably 18 bar or more, more preferably 20 bar or more; and / or in the annealing step iv-1), the pressure in the reactor R1 is 100 bar or less, preferably 80 bar or less, more preferably 60 bar or less, more preferably 50 bar or less, more preferably 40 bar or less, more preferably 35 bar or less, more preferably 30 bar or less, more preferably 25 bar or less, more preferably 20 bar or less, more preferably 15 bar or less, more preferably 10 bar or less, more preferably 5 bar or less. Thus, the cleaning is improved and the reactor corrosion is reduced.In a preferred embodiment, in step v), the cleaning composition CC1 is at least partially, preferably completely, removed from the reactor R1. Thus, the contamination of the product is reduced. Preferably, the term "completely” used above means, that 95 weight-% or more, preferably 98 weight-% or more, more preferably 99 weight-% or more, of cleaning composition CC1 is removed, compared to the amount of the introduced cleaning composition CC1.In a preferred embodiment, the reactor R1 comprises an inner wall and the inner wall comprises one or more impurity / ies IM1 and in step v), the cleaning composition CC1 , preferably together with at least a part of the one or more impurity / ies IM 1 in the reactor, is at least partially, preferably completely, removed from the reactor R1. Thus, the contamination of the product is reduced. Preferably, the term "completely” used above means, that the reactor does not contain any impurities anymore. This can for example be controlled by a person skilled in the art or determined by measuring the weight of the reactor.In a preferred embodiment, the step iv-1 is performed in the presence of an inert gas, preferably the inert gas is selected from He, N2 and / or Ar, preferably is N2. Thus, the cleaning is improved and the reactor corrosion is reduced.In a preferred embodiment, after step vi) and before step vii), the method comprises the step: vi-1) annealing the cleaning composition CC2.In a preferred embodiment, in the annealing step vi-1), the cleaning composition CC2 is annealed (at least once) to a temperature T1 of 30 °C or more, preferably 50 °C or more, more preferably 100 °C or more, more preferably 110 °C or more, more preferably 120 °C or more, more preferably 130 °C or more, more preferably 140 °C or more, more preferably 150 °C or more, 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 in the annealing step vi-1), the cleaning composition CC2 is annealed to a temperature T1 of 1000 °C or less, preferably 750 °C or less, more preferably 500 °C or less, more preferably 450 °C or less, more preferably 400 °C or less, more preferably 350 °C or less, more preferably 300 °C or less, more preferably 250 °C or less, more preferably 200 °C or less, more preferably 150 °C or less, more preferably 100 °C or less, more preferably 50 °C or less. Thus, the cleaning is improved and the reactor corrosion is reduced.In a preferred embodiment, in the annealing step vi-1), the cleaning composition CC2 is annealed to a temperature T1 for 1 s or more, preferably 1 min or more, more preferably 10 min or more, more preferably 30 min or more, more preferably 1 h or more, more preferably 2 h or more, more preferably 3 h or more, more preferably 4 h or more, more preferably 5 h or more, more preferably 6 h or more, more preferably 7 h or more, more preferably 8 h or more, more preferably 9 h or more, more preferably 10 h or more, more preferably 1 day or more, more preferably 1 week or more; and / or in the annealing step vi-1), the cleaning composition CC2 is annealed to a temperature T1 for 1 month or less, preferably 1 week or less, more preferably 1 day or less, more preferably 10 hours or less, more preferably 9 hours or less, more preferably 8 hours or less, more preferably 7 hours or less, more preferably 6 hours or less, more preferably 5 hours or less, more preferably 4 hours or less, more preferably 3 hours or less, more preferably 2 hours or less, more preferably 1 hours or less, more preferably 30 minutes or less, more preferably 10 minutes or less, more preferably 5 minutes or less, more preferably 1 minute or less. Thus, the cleaning is improved and the reactor corrosion is reduced.In a preferred embodiment, in the annealing step vi-1), the pressure in the reactor R1 is 1 bar or more, preferably 2 bar or more, more preferably 4 bar or more, more preferably 6 bar or more, more preferably 8 bar or more, more preferably 10 bar or more, more preferably 12 bar or more, more preferably 14 bar or more, more preferably 16 bar or more, more preferably 18 bar or more, more preferably 18 bar or more, more preferably 20 bar or more, more preferably 30 bar or more, more preferably 40 bar or more, more preferably 50 bar or more; and / or in the annealing step vi-1), the pressure in the reactor R1 is 100 bar or less, preferably 80 bar or less, more preferably 60 bar or less, more preferably 50 bar or less, more preferably 40 bar or less, more preferably 35 bar or less, more preferably 30 bar or less, more preferably 25 bar or less, more preferably 20 bar or less, more preferably 15 bar or less, more preferably 10 bar or less, more preferably 5 bar or less. Thus, the cleaning is improved and the reactor corrosion is reduced.In a preferred embodiment, in step vii), the cleaning composition CC2 is at least partially, preferably completely, removed from the reactor R1. Thus, the contamination of the product is reduced. Preferably, the term "completely” used above means, that 95 weight-% or more, preferably 98 weight-% or more, more preferably 99 weight-% or more, of cleaning composition CC2 is removed, compared to the amount of the introduced cleaning composition CC2.In a preferred embodiment, the reactor R1 comprises an inner wall and the inner wall comprises one or more impurity / ies IM1 and in step vii), the cleaning composition CC2, preferably together with at least a part of the one or more impurity / ies IM 1 in the reactor, is at least partially, preferably completely, removed from the reactor R1. Thus, the contamination of the product is reduced. Preferably, the term "completely” used above means, that the reactor does not contain any impurities anymore. This can for example be controlled by a person skilled in the art or determined by measuring the weight of the reactor.In a preferred embodiment, the step vi-1 is performed in the presence of an inert gas, preferably the inert gas is selected from He, N2 and / or Ar, preferably is N2. Thus, the cleaning is improved and the reactor corrosion is reduced.The reactor R1 is not particularly limited. In a preferred embodiment, in the reactor R1 , the polymer P1 has been produced.In a preferred embodiment, the reactor R1 is used for the production of a / the polymer P1.In a preferred embodiment, the reactor R1 is a batch reactor and / or a continuous flow reactor. In a preferred embodiment, the reactor R1 is a batch reactor. In a preferred embodiment, the reactor R1 is a continuous flow reactor. In addition, herein is disclosed that the composition CC1 and / or CC2 can be used to clean other parts of a plant comprising the reactor R1, which are in contact with the polymer P1 and / or polymer composition PC1 comprising the polymer P1 and / or composition A, for example, the inlet and / or outlet pipe(s).In a preferred embodiment, the reactor R1 comprises an inner wall and wherein the inner wall comprises at least partially one or more impurity / ies IM1.In a preferred embodiment, the one or more impurity / ies IM1 comprise(s) at least partially the polymer P1 and / or comprise(s) a compound obtainable or obtained by the production of the polymer P1 and / or a compound obtainable or obtained by the reaction of the monomer A1 , preferably and / or a / the monomer B1 , and / or a compound which is obtainable or obtained by the production of the polymer P1 . Thus, the cleaning composition CC1 is particularly suitable for cleaning the reactor.In a preferred embodiment, the reactor R1 is a reactor for the production of a polymer P1 and / or polymer composition PC1 comprising the polymer P1.In a preferred embodiment, the reactor R1 comprises, preferably consists of, metal; preferably iron; preferably metal alloy, more preferably steel, more preferably stainless steel. Thus, the reactor corrosion is reduced.In a preferred embodiment, the polymer P1 is a thermoplastic, thermoset and / or elastomer, preferably a thermoplastic. Thus, the cleaning composition CC1 is particularly suitable for cleaning the reactor and the contamination of the product is reduced.In a preferred embodiment, the polymer P1 is a semicrystalline polymer. Thus, the cleaning composition CC1 is particularly suitable for cleaning the reactor and the contamination of the product is reduced.In a preferred embodiment, the polymer P1 is a polyamide (PA), preferably polyphthalamide (PPA), polyisocyanate polyaddition product; preferably polyurethane (PU), thermoplastic polyurethane (TPU), polyurea or polyisocyanurate (PIR); polyethylene terephthalate (PET), polybutylene terephthalate (PBT), aromatic-aliphatic polyester; preferably polybutylene adipate coterephthalate (PBAT), or polybutylene sebacinate coterephthalate (PBSeT); aliphatic polyester; preferably polybutylene succinate (PBS); polybutylene adipate cosuccinate (PBSA), polyester (PES), polyether sulfone (PESU), polyhydroxyalkanoate (PHA), poly-3-hydroxybutyrate (P3HB), poly-4-hydroxybutyrate (P4HB), polyhydroxyvalerate (PHV), polyhydroxyhexanoate (PHH), polyhydroxyoctanoate (PHO), polylactic acid (PLA), polysulfone (PSU), polyphenylene sulfone (PPSU), polycarbonate (PC), polyether ether ketone (PEEK), poly(p- phenylene oxide) (PPO), or poly(p-phenylene ether) (PPE). Thus, the cleaning composition CC1 is particularly suitable for cleaning the reactor and the contamination of the product is reduced.In a preferred embodiment, the cleaning composition CC1 comprises water. Thus, the toxicity and inorganic waste are reduced and the environmental friendliness is improved.In a preferred embodiment, the cleaning composition CC1 comprises a compound 02 comprising a functional group FG2. Thus, the cleaning is improved.In a preferred embodiment, the cleaning composition 001 comprises, preferably consists of, the compound 01 , preferably the compound 01 and water or the compound 01 and a / the compound 02 comprising a functional group FG2, more preferably the compound 01 , a / the compound 02 comprising a functional group FG2 and water. Thus, the cleaning is improved.In a preferred embodiment, the content of the compound 01 in the cleaning composition 001 is 1 weight-% or 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, more preferably 95 weight-% or more, more preferably 99 weight-% or more, more preferably about 100 weight-%; and / or the content of the compound C1 in thecleaning composition CC1 is 100 weight-% or less, preferably 99 weight-% or less, more 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, more preferably 10 weight-% or less, more preferably 5 weight-% or less, more preferably 1 weight-% or less. Thus, the cleaning is improved. Especially, if the content of the compound C1 in the cleaning composition CC1 is 20 weight-% or 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, more preferably 95 weight-% or more, more preferably 99 weight-% or more, more preferably about 100 weight-%, the cleaning is significantly improved.In a preferred embodiment, the content of the compound C2 in the cleaning composition CC1 is 1 weight-% or 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, more preferably 95 weight-% or more, more preferably 99 weight-% or more and / or the content of the compound C2 in the cleaning composition CC1 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, more preferably 10 weight-% or less, more preferably 5 weight-% or less, more preferably 1 weight-% or less. Thus, the cleaning is improved.In a preferred embodiment, the content of the compound C1 and compound C2 in the cleaning composition CC1 is 1 weight-% or 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, more preferably 95 weight-% or more, more preferably 99 weight-% or more, more preferably about 100 weight-%; and / or the content of the compoundC1 and compound C2 in the cleaning composition CC1 is 100 weight-% or less, preferably 99 weight-% or less, more 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, more preferably 10 weight-% or less, more preferably 5 weight-% or less, more preferably 1 weight-% or less. Thus, the cleaning is improved.In a preferred embodiment, the content of water in the cleaning composition CC1 is 1 weight-% or more, preferably 3 weight-% or more, more preferably 5 weight-% or more, more preferably 10 weight-% or more, more preferably 20weight-% 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, more preferably 95 weight-% or more, more preferably 99 weight-% or more; and / or the content of water in the cleaning composition CC1 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, more preferably 10 weight-% or less, more preferably 5 weight-% or less, more preferably 1 weight-% or less. Thus, the cleaning is improved and the inorganic waste is reduced.In a preferred embodiment, the cleaning composition CC1 comprises, preferably consists of, in weight-%:1 to 100, preferably 20 to 97, more preferably 50 to 97, more preferably 50 to 80, compound C1 , 0 to 99, preferably 1 to 80, more preferably 5 to 70, more preferably 10 to 50, compound C2, and 0 to 99, preferably 1 to 50, more preferably 10 to 50, more preferably 15 to 30, water; and / or the cleaning composition CC1 comprises, preferably consists of, compound C1 , compound C2 and water. Thus, the cleaning is improved and the inorganic waste is reduced. Especially, if the content of compound C1 is 20 to 97, preferably 50 to 97, more preferably 50 to 80, the cleaning is significantly improved.In a preferred embodiment, the cleaning composition CC1 does not contain NaOH and / or KOH, preferably does not contain alkaline hydroxide, more preferably does not contain an inorganic base. Thus, the toxicity and reactor corrosion and the inorganic waste are reduced, the pH value of the used composition is lowered, and the environmental friendliness is improved.In a preferred embodiment, the cleaning composition CC1 does not contain H2SO4 and / or HNO3 and / or HCI and / or H3PO4, preferably does not contain an inorganic acid. Thus, the toxicity and reactor corrosion and the inorganic waste are reduced, the pH value of the used composition is increased, and the environmental friendliness is improved.In a preferred embodiment, the cleaning composition CC1 exhibits a pH value of 0 or more, preferably 1 or more, more preferably 2 or more, more preferably 3 or more, more preferably 4 or more, more preferably 5 or more, more preferably 6 or more, more preferably 7 or more; and / or the cleaning composition CC1 exhibits a pH value of 14 or less, preferably 12 or less, more preferably 10 or less, more preferably 9 or less, more preferably 8 or less, more preferably 7 or less, more preferably 6 or less, more preferably 5 or less, more preferably 4 or less, more preferably 3 or less, more preferably 2 or less, more preferably 1 or less. Preferably, the pH value is measured as follows: The pH value is measured by taking a sample and using a commercially available pH meter (e.g. Mettler-Toledo F20-Meter FiveEasy) based on conductivity measurement with a reference electrode.In a preferred embodiment, the cleaning composition CC2 comprises, preferably consists of, water, preferably deionized water. Thus, the contamination of the product is reduced and cleaning is improved.In a preferred embodiment, the cleaning composition CC2 comprises a surfactant. Thus, the contamination of the product is reduced and cleaning is improved.In a preferred embodiment, the composition A comprises a monomer B1, preferably wherein the monomer B1 comprises a functional group FG2.In a preferred embodiment, the composition A comprises, preferably consists of: the monomer A1 , preferably monomer B1, preferably one or more solvents, preferably a protic solvent, preferably water and / or alcohol, preferably one or more additive(s), preferably wherein the one or more additive(s) is / are selected from reinforcing agent(s), antioxidating agent(s), stabilizer(s), lubricant(s), mineral(s), chain extender(s), chain terminator(s), impact modifier(s), colorant(s), pigment(s), soot(s), carbon black(s), talc(s), and mixtures thereof, and preferably one or more catalyst(s), preferably wherein the one or more catalyst(s) is / are selected from an oxygenated phosphorous compound, a tertiary amine, a metal oxide and / or mixtures thereof, more preferably wherein the one or more catalyst(s) is / are selected from H3PO4, NaH2PO2, Sb2C>3, TO2, 1 ,4- Diazabicyclo(2.2.2)octan and / or mixture thereof.Thus, the contamination of the product is reduced and cleaning is improved.In a preferred embodiment, the monomer A1 is selected from an ester, ether, alcohol, amine, sulfone, acid, acid anhydride, amide, lactam, isocyanate and aminoacid. Thus, the contamination of the product is reduced and cleaning is improved.In a preferred embodiment, the monomer B1 is selected from an ester, ether, alcohol, amine, sulfone, acid, acid anhydride, amide, lactam, isocyanate and aminoacid. Thus, the contamination of the product is reduced and cleaning is improved.In a preferred embodiment, the monomer A1 and the monomer B1 are not the same. Thus, the contamination of the product is reduced and cleaning is improved.In a preferred embodiment, the monomer A1 does not contain a further functional group FG3, preferably does not contain any further functional group. Thus, the contamination of the product is reduced and cleaning is improved.In a preferred embodiment, the monomer A1 contains the functional group FG1 two times, preferably at least two times. Thus, the contamination of the product is reduced and cleaning is improved.In a preferred embodiment, the monomer B1 contains a further functional group FG3. Thus, the contamination of the product is reduced and cleaning is improved.In a preferred embodiment, the compound C1 is selected from an ester, ether, alcohol, amine, sulfone, acid, acid anhydride, amide, lactam, isocyanate and aminoacid. Thus, the cleaning is improved. A person skilled in the art knows that if an amide is brought into contact with water, that the amide reacts with water to form an acid and an amine. For example, caprolactam reacts with water to E-aminocaproic acid. Thus, if the compound, e.g. compound C1, is caprolactam and the cleaning composition CC1 comprises water and compound C1 , then the cleaning composition CC1 comprises water and a compound comprising a lactam, an amine and an acid as functional groups. For example, the lactam caprolactam reacts with water to the amino acid E-aminocaproic acid, comprising an amine and an acid as functional groups.In a preferred embodiment, the compound C2 is selected from an ester, ether, alcohol, amine, sulfone, acid, acid anhydride, amide, lactam, isocyanate and aminoacid. Thus, the cleaning is improved.In a preferred embodiment, compound C1 and compound C2 are not the same. Thus, the cleaning is improved.In a preferred embodiment, the compound C1 does not contain a further functional group FG3, preferably does not contain any further functional group. Thus, the cleaning is improved.In a preferred embodiment, the compound C1 contains the functional group FG1 two times, preferably at least two times. Thus, the cleaning is improved.In a preferred embodiment, the compound C2 contains a further functional group FG3. Thus, the cleaning is improved.In a preferred embodiment, the functional group FG1 and functional group FG2 are not the same. Thus, the contamination of the product is reduced and cleaning is improved.In a preferred embodiment, the functional group FG1 and functional group FG3 are not the same. Thus, the cleaning is improved.In a preferred embodiment, the functional group FG2 and functional group FG3 are not the same. Thus, the cleaning is improved.In a preferred embodiment, the functional group FG1 is selected from an ester, ether, alcohol, amine, sulfone, acid, acid anhydride, amide, lactam, and isocyanate. Thus, the cleaning is improved.In a preferred embodiment, the functional group FG2 is selected from an ester, ether, alcohol, amine, sulfone, acid, acid anhydride, amide, lactam, and isocyanate. Thus, the cleaning is improved.In a preferred embodiment, the functional group FG3 is selected from an ester, ether, alcohol, amine, sulfone, acid, acid anhydride, amide, lactam, and isocyanate. Thus, the cleaning is improved.In a preferred embodiment, the functional group FG1 is an ester, ether, alcohol, amine, sulfone, acid, anhydride, amide, lactam, or isocyanate. Thus, the cleaning is improved.In a preferred embodiment, the functional group FG2 is an ester, ether, alcohol, amine, sulfone, acid, anhydride, amide, lactam, or isocyanate. Thus, the cleaning is improved.In a preferred embodiment, the functional group FG3 is an ester, ether, alcohol, amine, sulfone, acid, anhydride, amide, lactam, or isocyanate. Thus, the cleaning is improved.In a preferred embodiment, the method is a method for cleaning a reactor, preferably reactor R1 , preferably and the production of a product, preferably product PRF1.In a preferred embodiment, the product PRF1 is selected from: i) building block or monomer; or ii) polymer, preferably polymer A, polymer composition, preferably polymer composition A, or polymer product, preferably polymer product A; or iii) cleaning polymer, cleaning surfactant, descaling compound, cleaning biocide or composition or formulation thereof; or iv) agrochemical composition, agrochemical formulation auxiliary or agrochemically active ingredient; or v) active pharmaceutical ingredient or intermediate thereof, pharmaceutical excipient, animal feed additive, human food additive, dietary supplements, aroma chemical or aroma composition; or vi) aqueous polymer dispersion, preferably polyurethane or polyurethane - poly(meth)acrylate hybrid polymer dispersion, emulsion, binder for paper and fiber coatings, UV-curable acrylic polymer for hot melts and coatings polyisocyanates, hyperbranched polyester polyol, polymeric dispersant for inorganic binder compositions, unsaturated polyester polyol or 100% curable composition; or vii) cosmetic surfactant, emollient, wax, cosmetic polymer, UV filter, further cosmetic ingredient or composition or formulation thereof; or viii) polymer B, polymer composition B, coating composition, other functional composition, foil, molded body, coating or coated substrate.In a preferred embodiment, the content of the polymer P1 in the product PRF1 is 1 weight-% or more, preferably 2 weight-% or more, more preferably 5 weight-% or more, more preferably 15 weight-% or more, more preferably 30weight-% 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 the content of the polymer P1 in the product PRF1 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.In a preferred embodiment, the cleaning composition CC1 comprises a compound C2 and a ratio (weight- % / weight-%) of the compound C1 to the compound C2 in the cleaning composition CC1 is 0.1 or more, preferably 0.3 or more, more preferably 0.5 or more, more preferably 0.7 or more, more preferably 0.9 or more, more preferably 1.0 or more, more preferably 1.1 or more, more preferably 1.3 or more, more preferably 1.5 or more, more preferably 1.8 or more, more preferably 2.0 or more, more preferably 5 or more, more preferably 10 or more, more preferably 25 or more, more preferably 50 or more; and / or the cleaning composition CC1 comprises a compound C2 and a ratio (weight- % / weight- %) of the compound C2 to the compound C1 in the cleaning composition CC1 is 0.1 or more, preferably 0.3 or more, more preferably 0.5 or more, more preferably 0.7 or more, more preferably 0.9 or more, more preferably 1.0 or more, more preferably 1.1 or more, more preferably 1.3 or more, more preferably 1.5 or more, more preferably 1.8 or more, more preferably 2.0 or more, more preferably 5 or more, more preferably 10 or more, more preferably 25 or more, more preferably 50 or more. Thus, the cleaning is improved. Especially, if the ratio (weight- % / weight-%) of the compound C1 to the compound C2 is 1.0 or more, preferably 1.1 or more, more preferably 1.3 or more, more preferably 1.5 or more, more preferably 1.8 or more, more preferably 2.0 or more, more preferably 5 or more, more preferably 10 or more, more preferably 25 or more, more preferably 50 or more, the cleaning is significantly improved.In a preferred embodiment, the compound C1 is the predominant compound by weight in the cleaning composition CC1. Thus, the cleaning is improved.In a preferred embodiment, the compound C1 is monomer M1. Thus, the contamination of the product is reduced.In a preferred embodiment, the compound C1 is not lauric acid, preferably wherein the cleaning composition CC1 does not comprise lauric acid.In a preferred embodiment, the polymer P1 comprises, preferably is: a polyamide (PA), preferably PA6, PA66, and / or polyphthalamide (PPA), more preferably PA6 and / or PA66, more preferably PA66; and / or PA6; and / or polyphthalamide (PPA), preferably PA6T / 6I, PA6T / 66, PA6T / 6, PA6I / 6T, PA66 / 6T and / or PA9T, more preferably PA6T / 6I; and / orpolyethylene terephthalate (PET) and / or polybutylene terephthalate (PBT), preferably polybutylene terephthalate (PBT).The publication Prior Art Disclosure; Issue 684; paragraphs

[1000] to

[8005] ; ISSN: 2198-4786; published: February 12, 2024 will be regarded as Reference RF1 , which is incorporated herein by reference in its entirety. Preferably, the product PRF1 is a product as described in Reference RF1 ; paragraphs

[1000] to

[8005] , Preferably, the method described herein is further a method for the production of a product, preferably product PRF1 .The converting step to obtain the product PRF1 preferably comprises one or more step(s) as described below and can be performed by conventional methods well known to a person skilled in the art. The converting step preferably comprises one or more step(s) selected from: recycling, preferably depolymerizing, gasifying, pyrolyzing, and / or steam cracking; and / or purifying, preferably crystallizing, (solvent) extracting, distilling, evaporating, hydrotreating, absorbing, adsorbing and / or subjecting to ion exchanger; and / or assembling, preferably foaming, synthesizing, chemical conversion, chemically transforming, polymerizing and / or compounding; and / or forming, preferably foaming, extruding and / or molding; and / or finishing, preferably coating and / or smoothing.In addition, the one or more step(s) are described in detail in Reference RF1 ; paragraphs

[1000] to

[8005] ,The term "building block”, as used herein, comprises compounds, which are in a gaseous or liquid state under standard conditions of 0°C and 0.1 MPa. Building blocks are typically used in chemical industry to form secondary products, which provide a higher structural complexity and / or higher molecular weight than the building block on which the secondary product is based. The building block is preferably selected from the group consisting of hydrogen, carbon monoxide, carbon dioxide, ethylene oxide, ethylene glycols, syngas comprising a mixture of hydrogen and carbon monoxide, alkanes, alkenes, alkynes and aromatic compounds. The alkanes, alkenes, alkynes and aromatic compounds comprise in particular 1 to 12 carbon atoms, respectively.The term "monomer”, as used in the context of the product PRF1 herein, comprises molecules, which can react with each other to form polymer chains by polymerization. The monomer is preferably selected from the group consisting of (meth)acrylic acid, salts of (meth)acrylic acid; in particular sodium, potassium and zinc salts; (meth)acrolein and (meth)acrylates. (Meth)acrylates comprising 1 to 22 carbon atoms are preferred, in particular comprising 1 to 8 carbon atoms. The terms (meth)acrylic acid, (meth)acrolein or (meth)acrylate relate to acrylic acid, acrolein or acrylate and also to methacrylic acid, methacrolein or methacrylate, where applicable. Further, the monomer can be selected from di- or polyols; in particular butandiol; aldehydes; in particular formaldehyde, amides; in particular caprolactam; sulfones; in particular 4,4'-dichlorodiphenyl sulfone; diamines; in particular hexamethylenediamine (HMD) and nonanediamine; and diacids; in particular terephthalic acid and adipic acid.The building block can further be an intermediate compound. The term "intermediate compound”, as used herein, comprises organic reagents, which are applied for formation of compounds with higher molecular complexity. The intermediate compound can be selected for example from the group consisting of phosgene, polyisocyanates and propylene oxide. The polyisocyanates are in particular aromatic di- and polyisocyanates, preferably toluene diisocyanate (TDI) and / or diphenylmethane diisocyanate (MDI).The building block and the monomer and typical converting step(s) to obtain the building block or monomer are described in more detail in paragraphs

[1000] to

[1012] of Reference RF1.The term "polymer A”, as used herein, comprises thermoplastic, e.g., polyamide or thermoplastic polyurethane, thermoset, e.g., polyurethane, elastomer, e.g., polybutadiene, or a copolymer or a mixture thereof and is defined in more detail in paragraphs

[2001] to

[2007] of Reference RF1.The term "polymer composition A”, as used herein, comprises all compositions comprising a polymer as described above and one or more additive(s), e.g. reinforcement, colorant, modifier and / or flame retardant, and is defined in more detail in paragraph

[2008] of Reference RF1.The term "polymer product A”, as used herein, comprises any product comprising the polymer A and / or polymer composition A as described above and is defined in more detail in paragraphs

[2009] and

[2010] of Reference RF1. The step(s) to obtain the polymer, preferably polymer A, polymer composition, preferably polymer composition A or polymer product, preferably polymer product A is / are described in more detail in paragraph

[2011] of Reference RF1 .The term "industrial use polymer”, as used herein, comprises rheology, polycarboxylate, alkoxylated polyalkylenamine, alkoxylated polyalkylenimine, polyether-based, dye inhibition and soil release cleaning polymers defined in more detail in paragraphs

[3035] to

[3044] of Reference RF1. The term "industrial use surfactant”, as used herein, comprises nonionic, anionic and amphoteric industrial use surfactants defined in more detail in paragraphs

[3008] to

[3034] of Reference RF1. The term "industrial use descaling compound”, as used herein, comprises non-phosphate based builders (NPB) and phosphonates (CoP) described in more detail in paragraphs

[3001] to

[3005] of Reference RF1. The term "industrial use biocide”, as used herein, refers to a chemical compound that kills microorganisms or inhibits their growth or reproduction defined in more detail in paragraphs

[3006] to

[3007] of Reference RF1. The term "industrial use solvent”, as used herein, comprises alkyl amides, alkyl lactamides, alkyl esters, lactate esters, alkyl diester, cyclic alkyl diester, cyclic carbonates, aromatic aldehydes and aromatic esters defined in more detail in paragraphs

[3045] to

[3055] of Reference RF1. The term "industrial use dispersant”, as used herein, comprises anionic and non-ionic industrial use dispersants defined in more detail in paragraphs

[3056] to

[3058] of Reference RF1. The term "composition and / or formulation thereof” with reference to the industrial use polymers, industrial use surfactants, descaling compounds and / or industrial use biocides refers to industrial use compositions and / or institutional use products and / or fabric and home care products and / or personal care products defined in more detail in paragraph

[3059] of Reference RF1. The converting step(s) to obtain the industrial use polymer, industrial use surfactant, descaling compound and / or industrial use biocide are defined in more detail in paragraph

[3060] of Reference RF1. The converting steps to obtain the industrial use composition or formulation of the industrial use polymer, industrial usesurfactant, descaling compound and / or industrial use biocide are defined in more detail in paragraph

[3061] of Reference RF1.The term "agrochemical composition”, as used herein, typically relates to a composition comprising an agrochemically active ingredient and at least one agrochemical formulation auxiliary. Examples of agrochemical compositions, active ingredients and auxiliaries are described in more detail in Reference RF1 , paragraph

[4001] ,The agrochemical composition may take the form of any customary formulation. The agrochemical compositions are prepared in a known manner, e.g. described by Mollet and Grubemann, Formulation technology, Wiley VCH, Weinheim, 2001 ; or Knowles, New developments in crop protection product formulation, Agrow Reports DS243, T&F Informa, London, 2005. The converting step(s) to obtain the agrochemically active ingredients and auxiliaries may be conducted in analogy to the production step(s) of their analogues that are based on petrochemicals or other precursors that are not gained by recycling processes. In addition, conversion to compounds mentioned in sections "Polymer” and "Cosmetic surfactant, emollient, wax, cosmetic polymer, UV filter, further cosmetic ingredient or compositions or formulations thereof” may be performed as described in these sections as well as the respective paragraphs in Reference RF1.The term active pharmaceutical ingredients and / or intermediates thereof, as used herein, comprises substances that provide pharmacological activity or other direct effect in the diagnosis, cure, mitigation, treatment, or prevention of disease, or to affect the structure or any function of the body. Intermediates thereof are isolated products that are generated during a multi-step route of synthesis of an active pharmaceutical ingredient. The term pharmaceutical excipients, as used herein, comprises compounds or compound mixtures used in compositions for various pharmaceutical applications, which are not substantially pharmaceutically active on itself. Active pharmaceutical ingredients and / or intermediates thereof and pharmaceutical excipients are defined in more detail in paragraph

[5001] of Reference RF1.The converting step(s) to obtain the active pharmaceutical ingredients and / or intermediates thereof and pharmaceutical excipients may comprise one or more synthesis steps and can be performed by conventional synthesis and techniques well known to a person skilled in the art.The terms animal feed additives, human food additives, dietary supplements, as used herein, comprises Vitamins, Pro- Vitamins and active metabolites thereof including intermediates and precursors, especially Vitamin A, B, E, D, K and esters thereof, like acetate, propionate, palmitate esters or alcohols thereof like retinol or salts thereof and any combinations thereof; Tetraterpenes, especially isoprenoids like carotenoids and xanthophylls including their intermediates and precursors as well as mixtures and derivates thereof, especially beta carotene, Canthaxanthin, Citranaxanthin, Astaxanthin, Zeaxanthin, Lutein, Lycopene, Apo-carotenoids, and any combinations thereof; organic acids, especially formic acid, propionic acid and salts thereof, such as sodium, calcium or ammonium salts, and any combinations thereof, such as but not limited to mixtures of formic acid and sodium formiate, propionic acid and ammonium propionate, formic acid and propionic acid, formic acid and sodium formiate and propionic acid, propionicacid and sodium propionate and formic acid and sodium formiate; glycerides of carboxylic acids and short and medium chain fatty acids, conjugated linoleic acids, such as omega-6 fatty acid (C18:2) methyl ester and 1 ,2-propandiol and beverage stabilizers, such as polyvinylpyrrolidone-polymer or polyvinylimidazole / polyvinylpyrrolidone-copolymer. Animal feed additives, human food additives and dietary supplements are defined in more detail in paragraph

[5002] of Reference RF1.The converting step(s) to obtain the animal feed additives, human food additives, dietary supplements may comprise one or more synthesis steps and can be performed by conventional synthesis and techniques well known to a person skilled in the art.The terms aroma chemical and aroma composition as used herein, comprise a volatile organic substance with a molecular weight between 70-250 g / mol comprising a functional group with a carbon skeleton of C5-C16 carbon atoms comprising linear, branched, cyclic, for example with a ring size of C5-C18, bicyclic or tricyclic aliphatic chains and but not necessarily one or more unsaturated structural elements like double bonds, triple bonds, aromatics or heteroaromatics and preferably the one or more additional functional groups are selected from alcohol, ether, ester, ketone, aldehyde, acetal, carboxylic acid, nitrile, thiol, amine. In one aspect, the aroma chemical is a terpene-based aroma chemical, for example selected from monoterpenes and monoterpenoids, sesquiterpenes and sesquiterpenoids, diterpenes, triterpenes or tetraterpenes. Aroma chemicals can be combined with further aroma chemicals to give an aroma composition. Aroma chemicals and aroma compositions are defined in more detail in paragraph

[5003] of Reference RF1.The converting step(s) to obtain the aroma chemical and aroma composition may comprise one or more synthesis steps and can be performed by conventional synthesis and techniques well known to a person skilled in the art.The term "aqueous polymer dispersion”, as used herein, comprises aqueous composition(s) comprising dispersed polymer(s) and is defined in more detail in the section

[6001] entitled "aqueous polymer dispersion” of Reference RF1. The dispersed polymer(s) may be selected from acrylic emulsion polymer(s), styrene acrylic emulsion polymer(s), styrene butadiene dispersion(s), aqueous dispersion(s) comprising composite particles, acrylate alkyd hybrid dispersion(s), polyurethane(s) (including UV-curable polyurethanes) and polyurethane - poly(meth)acrylate hybrid polymer(s). The term "emulsion polymer”, as used herein, comprises polymer(s) made by free-radical emulsion polymerization. Aqueous polyurethane dispersion(s) are defined in more detail in the section

[6002] entitled "Polyurethane dispersions” of Reference RF1. UV-curable polyurethane(s) is / are defined in more detail in the section

[6017] of Reference RF1. Polyurethane - poly(meth)acrylate hybrid polymer(s) is / are defined in more detail in the section

[6016] of Reference RF1.The term "polymeric dispersant”, as used herein, comprises preferably polymer(s) comprising polyether side chain, in particular polycarboxylate ether polymer(s) and polycondensation product(s) defined in more detail in paragraph

[6020] entitled "Polymeric dispersant” of Reference RF1.The converting (polymerization) step(s) to obtain the aqueous polymer dispersion(s) comprising emulsion polymer(s) is / are defined in more detail in the section

[6003] entitled "Emulsion polymerization” of Reference RF1.The converting (polymerization) step(s) to obtain the aqueous polyurethane dispersion(s) is / are defined in more detail in the section

[6014] entitled "Process for the preparation of aqueous polyurethane dispersions” and section

[6017] entitled "Aqueous UV-curable polyurethane dispersions, their preparation and use and compositions containing them” of Reference RF1.Composition(s) and uses of aqueous polymer dispersion(s) and of polymeric dispersant(s) are defined in more detail in the following sections of Reference RF1: section

[6004] entitled "Uses of aqueous polymer dispersions”, section

[6005] entitled "Binders for architectural and construction coatings” section

[6006] entitled "Binders for paper coating” section

[6007] entitled "Binders for fiber bonding” section

[6008] entitled "Adhesive polymers and adhesive compositions” section

[6015] entitled "Aqueous polyurethane dispersions suitable for use in coating compositions” section

[6016] entitled "Aqueous polyurethane - poly(meth)acrylate hybride polymer dispersions suitable for use in coating compositions” section

[6017] entitled "Aqueous UV-curable polyurethane dispersions, their preparation and use and compositions containing them” section

[6018] entitled "Inorganic binder compositions comprising polymeric dispersants and their use”

[6019] 100% curable coating compositionsUV-crosslinkable poly(meth)acrylate(s) and its / their uses are defined in more detail in section

[6009] entitled "UV- crosslinkable poly(meth)acrylates for use in UV-curable solvent-free hotmelt adhesives and their use for making pressure-sensitive self-adhesive articles” of Reference RF1.Polyisocyanate(s), composition(s) comprising them and their uses are defined in more detail in section

[6010] entitled "Polyisocyanates” of Reference RF1.Hyperbranched polyester polyol(s) and its / their uses are defined in more detail in section

[6011] entitled "Organic solvent based hyperbranched polyester polyols suitable for use in coating compositions” of Reference RF1. The converting step(s) to obtain the hyperbranched polyester polyols is / are defined in more detail in the section

[6012] entitled "Preparation of organic solvent based hyperbranched polyester polyols” of Reference RF1. Coating composition(s) comprising hyperbranched polyester polyol(s), polyisocyanate(s) and additive(s) and substrate(s) coated therewith are defined in more detail in section

[6013] entitled "Organic solvent based two component coating compositions comprising hyperbranched polyester polyols and polyisocyanates” of Reference RF1.Unsaturated polyester polyol(s), solvent-based coating composition(s) comprising said unsaturated polyester polyol(s) and substrate(s) for coating with said coating composition(s) are defined in more detail in section

[6018] entitled "Organic solvent based coating composition comprising unsaturated polyester polyols” of Reference RF1.100% curable coating composition(s) is / are defined in more detail in section

[6019] of Reference RF1.Polymeric dispersant(s) for inorganic binder compositions is / are defined in more detail in section

[6020] of Reference RF1 . The inorganic binder composition (s) comprising the polymeric dispersants and their use are defined in more detail in section

[6021] of Reference RF1. The converting step(s) to obtain the polymeric dispersant(s) are defined in more detail in section

[6020] of Reference RF1. The term "inorganic binder composition” comprising the polymeric dispersant(s), as used herein, comprises preferably in particular hydraulically setting compositions and compositions comprising calcium sulfate and is defined in more detail in section

[6021] of Reference RF1 entitled "Inorganic binder compositions comprising the polymeric dispersant and their use”. Specific building material formulation(s) comprising polymeric dispersant(s) or building product(s) produced by a building material formulation comprising a polymeric dispersant are disclosed in more detail in section

[6021] of Reference RF1.The term "cosmetic surfactant”, as used herein, comprises non-ionic, anionic, cationic and amphoteric surfactants and is defined in more detail in paragraph

[7002] of Reference RF1. The term "emollient”, as used herein, refers to a chemical compound used for protecting, moisturizing, and / or lubricating the skin and is defined in more detail in paragraph

[7003] of Reference RF1. The term "wax”, as used herein, comprises pearlizers and opacifiers and is defined in more detail in paragraph

[7004] of Reference RF1. The term "cosmetic polymer”, as used herein, comprises any polymer that can be used as an ingredient in a cosmetic formulation and is defined in more detail in paragraph

[7005] of Reference RF1 . The term "UV filter”, as used herein, refers to a chemical compound that blocks or absorbs ultraviolet light and is defined in more detail in paragraph

[7006] of Reference RF1. The term "further cosmetic ingredient”, as used herein, comprises any ingredient suitable for making a cosmetic formulation. Several sources disclose cosmetically acceptable ingredients. E. g. the database Cosing on the internet pages of the European Commission discloses cosmetic ingredients and the International Cosmetic Ingredient Dictionary and Handbook, edited by the Personal Care Products Council (PCPC), discloses cosmetic ingredients. The term "composition and / or formulation thereof” with reference to the cosmetic surfactant, emollient, wax, cosmetic polymer, UV filter and / or further cosmetic ingredient refers to personal care and / or cosmetic compositions or formulations defined in more detail in paragraph

[7007] of Reference RF1. The converting step(s) to obtain the cosmetic surfactant, emollient, wax, cosmetic polymer, UV filter or further cosmetic ingredient is / are defined in more detail in paragraph

[7008] of Reference RF1 .The terms "polymer B”, "polymer composition B”, "coating composition”, "other functional composition”, "foil”, "molded body”, "coating” and "coated substrate” are well known to the person skilled in the art and are defined in more detail from paragraph

[8000] to

[8005] of Reference RF1.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. Herein, if not stated otherwise, % refers to weight-%. If not stated otherwise, [bar] herein is preferably the absolute pressure [bara].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 preferredembodiments. In addition, if not stated otherwise, definitions and general statements herein referring the method also apply for the use, polymer P1, polymer composition PC1 and product PRF1, 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.1 . A method comprising the steps, preferably in this order:I) preferably providing a reactor R1 for the production of a polymer P1 and / or polymer composition PC1 comprising the polymer P1 , iv) introducing a cleaning composition CC1 in a / the reactor R1 for the production of a polymer P1 and / or polymer composition PC1 comprising the polymer P1 ; and v) removing the cleaning composition CC1 from the reactor R1 ; wherein the polymer P1 is obtainable or obtained by the reaction of a composition A comprising a monomer A1 , wherein the monomer A1 comprises a functional group FG1 ; wherein the cleaning composition CC1 comprises a compound C1 comprising the functional group FG1.2. Method, preferably according to embodiment 1, comprising the steps, preferably in this order:I) providing a reactor R1 for the production of a polymer P1 and / or polymer composition PC1 comprising the polymer P1 , ii) preferably producing the polymer P1 and / or polymer composition PC1 comprising the polymer P1 in the reactor R1 ; ill) preferably removing the polymer P1 and / or polymer composition PC1 comprising the polymer P1 from the reactor R1 ; iv) introducing a cleaning composition CC1 in the reactor R1 ; and v) removing the cleaning composition CC1 from the reactor R1 ; vi) preferably introducing a cleaning composition CC2 in the reactor R1 ; and vii) preferably removing the cleaning composition CC2 from the reactor R1 ; viii) preferably producing the polymer P1 and / or polymer composition PC1 comprising the polymer P1 in the reactor R1 ; ix) preferably converting the polymer P1 and / or polymer composition PC1 comprising the polymer P1 to obtain a product PRF1 ; wherein the polymer P1 is obtainable or obtained by the reaction of a composition A comprising a monomer A1 , wherein the monomer A1 comprises a functional group FG1 ; and wherein the cleaning composition CC1 comprises a compound C1 comprising the functional group FG1.3. Use of a cleaning composition CC1 for the treatment, preferably cleaning, of a reactor R1 for the production of a polymer P1 and / or polymer composition PC1 comprising the polymer P1 ; wherein the polymer P1 is obtainable or obtained by the reaction of a composition A comprising a monomer A1 , wherein the monomer A1 comprises a functional group FG1 ; wherein the cleaning composition CC1 comprises a compound C1 comprising the functional group FG1.4. Polymer P1 , polymer composition PC1 , and / or product PRF1 , obtainable by or obtained by a method according to any one of the preceding embodiments.5. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the method comprises step ii).6. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the method comprises step iii).7. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the method comprises step vi).8. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the method comprises step vii).9. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the method comprises step viii).10. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the method comprises step ix).11 . Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein after step iv) and before step v), the method comprises the step: iv-1) annealing the cleaning composition CC1.12. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein in the annealing step iv-1), the cleaning composition CC1 is annealed (at least once) to a temperature T1 of 30 °C or more, preferably 50 °C or more, more preferably 100 °C or more, more preferably 110 °C or more, more preferably 120 °C or more, more preferably 130 °C or more, more preferably 140 °C or more, more preferably 150 °C or more, 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.13. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein in the annealing step iv-1), the cleaning composition CC1 is annealed to a temperature T1 of 1000 °C or less, preferably 750 °C or less, more preferably 500 °C or less, more preferably 450 °C orless, more preferably 400 °C or less, more preferably 350 °C or less, more preferably 300 °C or less, more preferably 250 °C or less, more preferably 200 °C or less, more preferably 150 °C or less, more preferably 100 °C or less, more preferably 50 °C or less.14. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein in the annealing step iv-1), the cleaning composition CC1 is annealed to a temperature T1 for 1 s or more, preferably 1 min or more, more preferably 10 min or more, more preferably 30 min or more, more preferably 1 h or more, more preferably 2 h or more, more preferably 3 h or more, more preferably 4 h or more, more preferably 5 h or more, more preferably 6 h or more, more preferably 7 h or more, more preferably 8 h or more, more preferably 9 h or more, more preferably 10 h or more, more preferably 1 day or more, more preferably 1 week or more.15. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein in the annealing step iv-1), the cleaning composition CC1 is annealed to a temperature T1 for 1 month or less, preferably 1 week or less, more preferably 1 day or less, more preferably 10 hours or less, more preferably 9 hours or less, more preferably 8 hours or less, more preferably 7 hours or less, more preferably 6 hours or less, more preferably 5 hours or less, more preferably 4 hours or less, more preferably 3 hours or less, more preferably 2 hours or less, more preferably 1 hours or less, more preferably 30 minutes or less, more preferably 10 minutes or less, more preferably 5 minutes or less, more preferably 1 minute or less.16. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein in the annealing step iv-1), the pressure in the reactor R1 is 1 bar or more, preferably 2 bar or more, more preferably 4 bar or more, more preferably 6 bar or more, more preferably 8 bar or more, more preferably 10 bar or more, more preferably 12 bar or more, more preferably 14 bar or more, more preferably 16 bar or more, more preferably 18 bar or more, more preferably 18 bar or more, more preferably 20 bar or more.17. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein in the annealing step iv-1), the pressure in the reactor R1 is 100 bar or less, preferably 80 bar or less, more preferably 60 bar or less, more preferably 50 bar or less, more preferably 40 bar or less, more preferably 35 bar or less, more preferably 30 bar or less, more preferably 25 bar or less, more preferably 20 bar or less, more preferably 15 bar or less, more preferably 10 bar or less, more preferably 5 bar or less.18. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein in step v), the cleaning composition CC1 is at least partially, preferably completely, removed from the reactor R1 .19. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the reactor R1 comprises an inner wall and wherein the inner wall comprises one ormore impurity / ies IM 1 and wherein in step v), the cleaning composition CC1 , preferably together with at least a part of the one or more impurity / ies IM 1 in the reactor, is at least partially, preferably completely, removed from the reactor R1 .20. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the step iv-1 is performed in the presence of an inert gas, preferably wherein the inert gas is selected from He, N2 and / or Ar, preferably is N2.21 . Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein after step vi) and before step vii), the method comprises the step: vi-1) annealing the cleaning composition CC2.22. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein in the annealing step vi-1), the cleaning composition CC2 is annealed (at least once) to a temperature T1 of 30 °C or more, preferably 50 °C or more, more preferably 100 °C or more, more preferably 110 °C or more, more preferably 120 °C or more, more preferably 130 °C or more, more preferably 140 °C or more, more preferably 150 °C or more, 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.23. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein in the annealing step vi-1), the cleaning composition CC2 is annealed to a temperature T1 of 1000 °C or less, preferably 750 °C or less, more preferably 500 °C or less, more preferably 450 °C or less, more preferably 400 °C or less, more preferably 350 °C or less, more preferably 300 °C or less, more preferably 250 °C or less, more preferably 200 °C or less, more preferably 150 °C or less, more preferably 100 °C or less, more preferably 50 °C or less.24. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein in the annealing step vi-1), the cleaning composition CC2 is annealed to a temperature T1 for 1 s or more, preferably 1 min or more, more preferably 10 min or more, more preferably 30 min or more, more preferably 1 h or more, more preferably 2 h or more, more preferably 3 h or more, more preferably 4 h or more, more preferably 5 h or more, more preferably 6 h or more, more preferably 7 h or more, more preferably 8 h or more, more preferably 9 h or more, more preferably 10 h or more, more preferably 1 day or more, more preferably 1 week or more.Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein in the annealing step vi-1), the cleaning composition CC2 is annealed to a temperature T1 for 1 month or less, preferably 1 week or less, more preferably 1 day or less, more preferably 10 hours or less, more preferably 9 hours or less, more preferably 8 hours or less, more preferably 7 hours or less, more preferably 6 hours or less, more preferably 5 hours or less, more preferably 4 hours or less, more preferably 3 hours or less, more preferably 2 hours or less, more preferably 1 hours or less, more preferably 30 minutes or less, more preferably 10 minutes or less, more preferably 5 minutes or less, more preferably 1 minute or less. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein in the annealing step vi-1), the pressure in the reactor R1 is 1 bar or more, preferably 2 bar or more, more preferably 4 bar or more, more preferably 6 bar or more, more preferably 8 bar or more, more preferably 10 bar or more, more preferably 12 bar or more, more preferably 14 bar or more, more preferably 16 bar or more, more preferably 18 bar or more, more preferably 18 bar or more, more preferably 20 bar or more, more preferably 30 bar or more, more preferably 40 bar or more, more preferably 50 bar or more. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein in the annealing step vi-1), the pressure in the reactor R1 is 100 bar or less, preferably 80 bar or less, more preferably 60 bar or less, more preferably 50 bar or less, more preferably 40 bar or less, more preferably 35 bar or less, more preferably 30 bar or less, more preferably 25 bar or less, more preferably 20 bar or less, more preferably 15 bar or less, more preferably 10 bar or less, more preferably 5 bar or less. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein in step vii), the cleaning composition CC2 is at least partially, preferably completely, removed from the reactor R1 . Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the reactor R1 comprises an inner wall and wherein the inner wall comprises one or more impurity / ies IM1 and wherein in step vii), the cleaning composition CC2, preferably together with at least a part of the one or more impurity / ies IM 1 in the reactor, is at least partially, preferably completely, removed from the reactor R1 . Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the step vi-1 is performed in the presence of an inert gas, preferably wherein the inert gas is selected from He, N2 and / or Ar, preferably is N2. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein in the reactor R1 , the polymer P1 has been produced.Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the reactor R1 is used for the production of a / the polymer P1. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the reactor R1 is a batch reactor and / or a continuous flow reactor. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the reactor R1 is a batch reactor. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the reactor R1 is a continuous flow reactor. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the reactor R1 comprises an inner wall and wherein the inner wall comprises at least partially one or more impurity / ies IM1. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the one or more impurity / ies IM1 comprise(s) at least partially the polymer P1 and / or comprise(s) a compound obtainable or obtained by the production of the polymer P1 and / or a compound obtainable or obtained by the reaction of the monomer A1 , preferably and / or a / the monomer B1 , and / or a compound which is obtainable or obtained by the production of the polymer P1 . Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the reactor R1 is a reactor for the production of a polymer P1 and / or polymer composition PC1 comprising the polymer P1. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the reactor R1 comprises, preferably consists of, metal; preferably iron; preferably metal alloy, more preferably steel, more preferably stainless steel. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the polymer P1 is a thermoplastic, thermoset and / or elastomer, preferably a thermoplastic. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the polymer P1 is a semicrystalline polymer. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the polymer P1 is a polyamide (PA), preferably polyphthalamide (PPA), polyisocyanatepolyaddition product; preferably polyurethane (PU), thermoplastic polyurethane (TPU), polyurea or polyisocyanurate (PIR); polyethylene terephthalate (PET), polybutylene terephthalate (PBT), aromatic-aliphatic polyester; preferably polybutylene adipate coterephthalate (PBAT), or polybutylene sebacinate coterephthalate (PBSeT); aliphatic polyester; preferably polybutylene succinate (PBS); polybutylene adipate cosuccinate (PBSA), polyester (PES), polyether sulfone (PESU), polyhydroxyalkanoate (PHA), poly-3-hydroxybutyrate (P3HB), poly-4-hydroxybutyrate (P4HB), polyhydroxyvalerate (PHV), polyhydroxyhexanoate (PHH), polyhydroxyoctanoate (PHO), polylactic acid (PLA), polysulfone (PSU), polyphenylene sulfone (PPSU), polycarbonate (PC), polyether ether ketone (PEEK), poly(p-phenylene oxide) (PPO), or poly(p-phenylene ether) (PPE). Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the cleaning composition CC1 comprises water. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the cleaning composition CC1 comprises a compound 02 comprising a functional group FG2. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the cleaning composition 001 comprises, preferably consists of, the compound 01 , preferably the compound 01 and water or the compound 01 and a / the compound 02 comprising a functional group FG2, more preferably the compound 01, a / the compound 02 comprising a functional group FG2 and water. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the content of the compound 01 in the cleaning composition 001 is 1 weight-% or 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, more preferably 95 weight-% or more, more preferably 99 weight-% or more, more preferably about 100 weight-%. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the content of the compound C1 in the cleaning composition CC1 is 100 weight-% or less, preferably 99 weight-% or less, more 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, more preferably 10 weight-% or less, more preferably 5 weight-% or less, more preferably 1 weight-% or less.48. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the content of the compound C2 in the cleaning composition CC1 is 1 weight-% or 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, more preferably 95 weight-% or more, more preferably 99 weight-% or more.49. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the content of the compound C2 in the cleaning composition CC1 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, more preferably 10 weight-% or less, more preferably 5 weight-% or less, more preferably 1 weight-% or less.50. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the content of the compound C1 and compound C2 in the cleaning composition CC1 is 1 weight-% or 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, more preferably 95 weight-% or more, more preferably 99 weight-% or more, more preferably about 100 weight- %.51 . Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the content of the compound C1 and compound C2 in the cleaning composition CC1 is 100 weight-% or less, preferably 99 weight-% or less, more 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, more preferably 10 weight-% or less, more preferably 5 weight-% or less, more preferably 1 weight-% or less.52. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the content of water in the cleaning composition CC1 is 1 weight-% or 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, more preferably 95 weight-% or more, more preferably 99 weight-% or more.53. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the content of water in the cleaning composition CC1 is 99 weight-% or less, preferably 95 weight-% or less, more preferably 90 weight-% or less, more preferably 80 weight-% or less, more preferably70 weight-% or less, more preferably 60 weight-% or less, more preferably 50 weight-% or less, more preferably40 weight-% or less, more preferably 30 weight-% or less, more preferably 20 weight-% or less, more preferably10 weight-% or less, more preferably 5 weight-% or less, more preferably 1 weight-% or less.54. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the cleaning composition CC1 comprises, preferably consists of, in weight-%: 1 to 100, preferably 20 to 97, more preferably 50 to 97, more preferably 50 to 80, compound C1 , 0 to 99, preferably 1 to 80, more preferably 5 to 70, more preferably 10 to 50, compound C2, and 0 to 99, preferably 1 to 50, more preferably 10 to 50, more preferably 15 to 30, water.55. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the cleaning composition CC1 comprises, preferably consists of, compound C1 , compound C2 and water.56. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the cleaning composition CC1 does not contain NaOH and / or KOH, preferably does not contain alkaline hydroxide, more preferably does not contain an inorganic base.57. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the cleaning composition CC1 does not contain H2SO4 and / or HNO3 and / or HCI and / or H3PO4, preferably does not contain an inorganic acid.58. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the cleaning composition CC1 exhibits a pH value of 0 or more, preferably 1 or more, more preferably 2 or more, more preferably 3 or more, more preferably 4 or more, more preferably 5 or more, more preferably 6 or more, more preferably 7 or more.59. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the cleaning composition CC1 exhibits a pH value of 14 or less, preferably 12 or less, more preferably 10 or less, more preferably 9 or less, more preferably 8 or less, more preferably 7 or less, more preferably 6 or less, more preferably 5 or less, more preferably 4 or less, more preferably 3 or less, more preferably 2 or less, more preferably 1 or less.60. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the cleaning composition CC2 comprises, preferably consists of, water, preferably deionized water.61. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the cleaning composition CC2 comprises a surfactant.62. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the composition A comprises a monomer B1, preferably wherein the monomer B1 comprises a functional group FG2.63. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the composition A comprises, preferably consists of: the monomer A1 , preferably monomer B1 , preferably one or more solvents, preferably a protic solvent, preferably water and / or alcohol, preferably one or more additive(s), preferably wherein the one or more additive(s) is / are selected from reinforcing agent(s), antioxidating agent(s), stabilizer(s), lubricant(s), mineral(s), chain extender(s), chain terminator(s), impact modifier(s), colorant(s), pigment(s), soot(s), carbon black(s), talc(s), and mixtures thereof, and preferably one or more catalyst(s), preferably wherein the one or more catalyst(s) is / are selected from an oxygenated phosphorous compound, a tertiary amine, a metal oxide and / or mixtures thereof, more preferably wherein the one or more catalyst(s) is / are selected from H3PO4, NaH2PO2, Sb2C>3, TiC>2, 1,4- Diazabicyclo(2.2.2)octan and / or mixture thereof.64. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the monomer A1 is selected from an ester, ether, alcohol, amine, sulfone, acid, acid anhydride, amide, lactam, isocyanate and aminoacid.65. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the monomer B1 is selected from an ester, ether, alcohol, amine, sulfone, acid, acid anhydride, amide, lactam, isocyanate and aminoacid.66. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the monomer A1 and the monomer B1 are not the same.67. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the monomer A1 does not contain a further functional group FG3, preferably does not contain any further functional group.68. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the monomer A1 contains the functional group FG1 two times, preferably at least two times.69. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the monomer B1 contains a further functional group FG3.70. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the compound C1 is selected from an ester, ether, alcohol, amine, sulfone, acid, acid anhydride, amide, lactam, isocyanate and aminoacid.71 . Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the compound C2 is selected from an ester, ether, alcohol, amine, sulfone, acid, acid anhydride, amide, lactam, isocyanate and aminoacid.72. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein compound C1 and compound C2 are not the same.73. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the compound C1 does not contain a further functional group FG3, preferably does not contain any further functional group.74. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the compound C1 contains the functional group FG1 two times, preferably at least two times.75. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the compound C2 contains a further functional group FG3.76. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG1 and functional group FG2 are not the same.77. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG1 and functional group FG3 are not the same.78. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG2 and functional group FG3 are not the same.79. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG1 is selected from an ester, ether, alcohol, amine, sulfone, acid, acid anhydride, amide, lactam, and isocyanate.80. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG2 is selected from an ester, ether, alcohol, amine, sulfone, acid, acid anhydride, amide, lactam, and isocyanate.81 . Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG3 is selected from an ester, ether, alcohol, amine, sulfone, acid, acid anhydride, amide, lactam, and isocyanate.82. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG1 is an ester.83. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG1 is an ether.84. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG1 is an alcohol.85. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG1 is an amine.86. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG1 is a sulfone.87. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG1 is an acid.88. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG1 is an acid anhydride.89. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG1 is an amide.90. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG1 is a lactam.91 . Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG1 is an isocyanate.92. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG2 is an ester.93. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG2 is an ether.94. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG2 is an alcohol.95. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG2 is an amine.96. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG2 is a sulfone.97. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG2 is an acid.98. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG2 is an acid anhydride.99. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG2 is an amide.100. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG2 is a lactam.101 . Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG2 is an isocyanate.102. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG3 is an ester.103. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG3 is an ether.104. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG3 is an alcohol.105. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG3 is an amine.106. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG3 is a sulfone.107. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG3 is an acid.108. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG3 is an acid anhydride.109. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG3 is an amide.110. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG3 is a lactam.111 . Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the functional group FG3 is an isocyanate.112. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the method is a method for cleaning a reactor, preferably reactor R1 , preferably and the production of a product, preferably product PRF1.113. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the product PRF1 is selected from: i) building block or monomer; or ii) polymer, preferably polymer A, polymer composition, preferably polymer composition A, or polymer product, preferably polymer product A; or iii) cleaning polymer, cleaning surfactant, descaling compound, cleaning biocide or composition or formulation thereof; oriv) agrochemical composition, agrochemical formulation auxiliary or agrochemically active ingredient; or v) active pharmaceutical ingredient or intermediate thereof, pharmaceutical excipient, animal feed additive, human food additive, dietary supplements, aroma chemical or aroma composition; or vi) aqueous polymer dispersion, preferably polyurethane or polyurethane - poly(meth)acrylate hybrid polymer dispersion, emulsion, binder for paper and fiber coatings, UV-curable acrylic polymer for hot melts and coatings polyisocyanates, hyperbranched polyester polyol, polymeric dispersant for inorganic binder compositions, unsaturated polyester polyol or 100% curable composition; or vii) cosmetic surfactant, emollient, wax, cosmetic polymer, UV filter, further cosmetic ingredient or composition or formulation thereof; or viii) polymer B, polymer composition B, coating composition, other functional composition, foil, molded body, coating or coated substrate. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the content of the polymer P1 in the product PRF1 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 the content of the polymer P1 in the product PRF1 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. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the cleaning composition CC1 comprises a compound C2 and a ratio (weight- % / weight- %) of the compound C1 to the compound C2 in the cleaning composition CC1 is 0.1 or more, preferably 0.3 or more, more preferably 0.5 or more, more preferably 0.7 or more, more preferably 0.9 or more, more preferably 1.0 or more, more preferably 1.1 or more, more preferably 1.3 or more, more preferably 1.5 or more, more preferably 1.8 or more, more preferably 2.0 or more, more preferably 5 or more, more preferably 10 or more, more preferably 25 or more, more preferably 50 or more. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the cleaning composition CC1 comprises a compound C2 and a ratio (weight- % / weight- %) of the compound C2 to the compound C1 in the cleaning composition CC1 is 0.1 or more, preferably 0.3 or more, more preferably 0.5 or more, more preferably 0.7 or more, more preferably 0.9 or more, more preferably 1.0 or more, more preferably 1.1 or more, more preferably 1.3 or more, more preferably 1.5 or more, morepreferably 1.8 or more, more preferably 2.0 or more, more preferably 5 or more, more preferably 10 or more, more preferably 25 or more, more preferably 50 or more.117. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the compound C1 is the predominant compound by weight in the cleaning composition CC1.118. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the compound C1 is monomer M1.119. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the compound C1 is not lauric acid, preferably wherein the cleaning composition CC1 does not comprise lauric acid.120. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the polymer P1 comprises, preferably is, a polyamide (PA), preferably PA6, PA66, and / or polyphthalamide (PPA), more preferably PA6 and / or PA66, more preferably PA66.121 . Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the polymer P1 comprises, preferably is, PA6.122. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the polymer P1 comprises, preferably is, polyphthalamide (PPA), preferably PA6T / 6I, PA6T / 66, PA6T / 6, PA6I / 6T, PA66 / 6T and / or PA9T, more preferably PA6T / 6I.123. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding embodiments, wherein the polymer P1 comprises, preferably is, polyethylene terephthalate (PET) and / or polybutylene terephthalate (PBT), preferably polybutylene terephthalate (PBT).ExamplesA mixture of 0.5 g granules of a polymer (P1) and 2.0 g of cleaning composition 1 (CC1) consisting of compound 1 (C1), optionally compound 2 (C2) and optionally compound 3 (C3) were filled in a glass pressure vial equipped with a magnetic stirrer and heated by microwave irradiation to 200°C for 120 min. The obtained reaction mixture was visually inspected at temperature and evaluated according to the rating system displayed in Table 1 . The results of the solubility trial are displayed in Table 2.Table 1: Rating system for ExamplesRating Meaning++ Fully dissolved and / or degraded+ Mostly dissolved and / or degradedPartly dissolved and / or degraded Not dissolved and / or degradedTable 2: Results of Examples# compound C1 wt-% compound C2 wt-% compound C3 wt-% Polymer P1 Rating1 Adipic acid 50 - - Water 50 PA66 ++2 Caprolactam 20 Diethylene glycol 60 Water 20 PA66 ++3 Glycerol 50 - - Water 50 PA664 Adipic acid 50 - - Water 50 PA6T / 6I +5 Glycerol 50 - - Water 50 PA6T / 6I6 Adipic acid 50 - - Water 50 PBT ++7 Glycerol 50 - - Water 50 PBT ++8 Caprolactam 20 Diethylene glycol 60 Water 20 PBT ++9 Caprolactam 20 Diethylene glycol 60 Water 20 PA6 ++

Claims

Claims1 . A method comprising the steps: iv) introducing a cleaning composition CC1 in a reactor R1 for the production of a polymer P1 and / or polymer composition PC1 comprising the polymer P1 ; and v) removing the cleaning composition CC1 from the reactor R1 ; wherein the polymer P1 is obtainable or obtained by the reaction of a composition A comprising a monomer A1 , wherein the monomer A1 comprises a functional group FG1 ; wherein the cleaning composition CC1 comprises a compound C1 comprising the functional group FG1.

2. Method according to claim 1 , comprising the steps:I) providing a reactor R1 for the production of a polymer P1 and / or polymer composition PC1 comprising the polymer P1 , ii) preferably producing the polymer P1 and / or polymer composition PC1 comprising the polymer P1 in the reactor R1 ; ill) preferably removing the polymer P1 and / or polymer composition PC1 comprising the polymer P1 from the reactor R1 ; iv) introducing a cleaning composition CC1 in the reactor R1 ; and v) removing the cleaning composition CC1 from the reactor R1 ; vi) preferably introducing a cleaning composition CC2 in the reactor R1 ; and vii) preferably removing the cleaning composition CC2 from the reactor R1 ; viii) preferably producing the polymer P1 and / or polymer composition PC1 comprising the polymer P1 in the reactor R1 ; ix) preferably converting the polymer P1 and / or polymer composition PC1 comprising the polymer P1 to obtain a product PRF1 ; wherein the polymer P1 is obtainable or obtained by the reaction of a composition A comprising a monomer A1 , wherein the monomer A1 comprises a functional group FG1 ; wherein the cleaning composition CC1 comprises a compound C1 comprising the functional group FG1.

3. Use of a cleaning composition CC1 for the treatment, preferably cleaning, of a reactor R1 for the production of a polymer P1 and / or polymer composition PC1 comprising the polymer P1 ; wherein the polymer P1 is obtainable or obtained by the reaction of a composition A comprising a monomer A1 , wherein the monomer A1 comprises a functional group FG1 ; wherein the cleaning composition CC1 comprises a compound C1 comprising the functional group FG1.

4. Polymer P1 , polymer composition PC1 , and / or product PRF1 , obtainable by or obtained by a method according to any one of the preceding claims.

5. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding claims, wherein the method comprises steps ii) and iii), vi), vii),6. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding claims, wherein the method comprises step viii), preferably and step ix).

7. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding claims, wherein, after step iv) and before step v), the method comprises the step: iv-1) annealing the cleaning composition CC1.

8. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding claims, wherein in the annealing step iv-1), the cleaning composition CC1 is annealed to a temperature T1 of 30 °C or more and 1000 °C or less for 1 s or more and 1 month or less and wherein in the annealing step iv-1), the pressure in the reactor R1 is 1 bar or more and 100 bar or less.

9. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding claims, wherein the polymer P1 is a thermoplastic, thermoset and / or elastomer, preferably a thermoplastic; and / or wherein the polymer P1 is a semicrystalline polymer; and / or wherein the polymer P1 is a polyamide (PA), preferably polyphthalamide (PPA), polyisocyanate polyaddition product; preferably polyurethane (PU), thermoplastic polyurethane (TPU), polyurea or polyisocyanurate (PIR); polyethylene terephthalate (PET), polybutylene terephthalate (PBT), aromatic-aliphatic polyester; preferably polybutylene adipate coterephthalate (PBAT), or polybutylene sebacinate coterephthalate (PBSeT); aliphatic polyester; preferably polybutylene succinate (PBS); polybutylene adipate cosuccinate (PBSA), polyester (PES), polyether sulfone (PESU), polyhydroxyalkanoate (PHA), poly-3-hydroxybutyrate (P3HB), poly-4- hydroxybutyrate (P4HB), polyhydroxyvalerate (PHV), polyhydroxyhexanoate (PHH), polyhydroxyoctanoate (PHO), polylactic acid (PLA), polysulfone (PSU), polyphenylene sulfone (PPSU), polycarbonate (PC), polyether ether ketone (PEEK), poly(p-phenylene oxide) (PPO), or poly(p-phenylene ether) (PPE).

10. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding claims, wherein the cleaning composition CC1 comprises, preferably consists of, the compound C1 , preferably the compound C1 and water or the compound 01 and a compound 02 comprising a functional group FG2, more preferably the compound 01 , a compound 02 comprising a functional group FG2 and water.11 . Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding claims, wherein the cleaning composition 001 does not contain NaOH and / or KOH, preferably does not contain alkaline hydroxide, more preferably does not contain an inorganic base; and / or does not contain H2SO4 and / or HNO3 and / or HOI and / or H3PO4, preferably does not contain an inorganic acid.

12. Method, use, polymer P1 , polymer composition PC1 and / or product PRF1 according to any one of the preceding claims, wherein compound C1 is selected from an ester, ether, alcohol, amine, sulfone, acid, acid anhydride, amide, lactam, isocyanate and aminoacid.

13. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding claims, wherein compound C2 is selected from an ester, ether, alcohol, amine, sulfone, acid, acid anhydride, amide, lactam, isocyanate and aminoacid.

14. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding claims, wherein the compound C1 contains the functional group FG1 two times, preferably at least two times.

15. Method, use, polymer P1, polymer composition PC1 and / or product PRF1 according to any one of the preceding claims, wherein the compound C2 contains a further functional group FG3.