Improved method of degrading a polymer being a homo or copolymer into oligomers, trimers, dimers and/or monomers, which polymer is at least one of a polyester, a polyether, a polyamine and a polyamide, wherein a reusable catalyst complex is used that is capable of degrading the polymer into oligomers and/or monomers, which method comprises the steps of - providing the polymer and the reusable catalyst complex in a solvent in a reactor, the polymer being in solid form, said solvent being a mono- or di-alcohol, wherein the polymer is supplied in the form of a product with an average volume of 10 -7 -50 cm 3, - adjusting temperature and pressure to reaction conditions, wherein the polymer, the solvent and the catalyst complex form a dispersion, and a polymer concentration in the dispersion is from 1-30 wt.%, - degrading the polymer over a period sufficient to degrade a significant portion thereof, wherein the solvent is a reactant, which is capable of reacting with the polymer being degraded,.wherein said degrading is performed at a temperature of 170-200°C and a pressure of 90kPa-10,000kPa and - recovering the catalyst complex, which step comprises the addition of water, so as to separate the catalyst complex from the solvent, and subsequent removal from a water phase, wherein the reactor is selected from a (semi)continuous type, such as a continuous stirred tank reactor (CSTR), and a tube-like reactor, such as a loop reactor, a plug flow reactor, an oscillatory flow reactor, an N-unit loop reactor system, and a batch type, and combinations thereof, wherein an average residence time of the polymer in the reactor is from 30 sec.-3 hours, wherein the catalyst complex comprises a catalyst entity, a magnetic nanoparticle, and a bridging moiety solely between the catalyst entity and the magnetic nanoparticle, the catalyst complex being capable of degrading a polymer into oligomers, trimers, dimers and/or monomers, which catalyst entity comprises an aromatic heterocycle moiety having a positive charge and a moiety having a negative charge, wherein the catalyst entity and bridging moiety are attached such as by a chemical covalent bond, and wherein the bridging moiety and nanoparticle are attached, such as by a covalent bond, wherein the magnetic particles have an average diameter of 2 nm - 500 nm, wherein the bridging moiety is present in an amount of 5 ∗ 10 -6 -0.1 Mole bridging moiety/gr magnetic particle. - providing the polymer and the reusable catalyst complex in a solvent in a reactor, the polymer being in solid form, said solvent being a mono- or di-alcohol, wherein the polymer is supplied in the form of a product with an average volume of 10 -7 -50 cm 3, - adjusting temperature and pressure to reaction conditions, wherein the polymer, the solvent and the catalyst complex form a dispersion, and a polymer concentration in the dispersion is from 1-30 wt.%, - degrading the polymer over a period sufficient to degrade a significant portion thereof, wherein the solvent is a reactant, which is capable of reacting with the polymer being degraded,.wherein said degrading is performed at a temperature of 170-200°C and a pressure of 90kPa-10,000kPa and - recovering the catalyst complex, which step comprises the addition of water, so as to separate the catalyst complex from the solvent, and subsequent removal from a water phase, wherein the reactor is selected from a (semi)continuous type, such as a continuous stirred tank reactor (CSTR), and a tube-like reactor, such as a loop reactor, a plug flow reactor, an oscillatory flow reactor, an N-unit loop reactor system, and a batch type, and combinations thereof, wherein an average residence time of the polymer in the reactor is from 30 sec.-3 hours, wherein the catalyst complex comprises a catalyst entity, a magnetic nanoparticle, and a bridging moiety solely between the catalyst entity and the magnetic nanoparticle, the catalyst complex being capable of degrading a polymer into oligomers, trimers, dimers and/or monomers, which catalyst entity comprises an aromatic heterocycle moiety having a positive charge and a moiety having a negative charge, wherein the catalyst entity and bridging moiety are attached such as by a chemical covalent bond, and wherein the bridging moiety and nanoparticle are attached, such as by a covalent bond, wherein the magnetic particles have an average diameter of 2 nm - 500 nm, wherein the bridging moiety is present in an amount of 5 ∗ 10 -6 -0.1 Mole bridging moiety/gr magnetic particle. wherein the reactor is selected from a (semi)continuous type, such as a continuous stirred tank reactor (CSTR), and a tube-like reactor, such as a loop reactor, a plug flow reactor, an oscillatory flow reactor, an N-unit loop reactor system, and a batch type, and combinations thereof, wherein an average residence time of the polymer in the reactor is from 30 sec.-3 hours, wherein the catalyst complex comprises a catalyst entity, a magnetic nanoparticle, and a bridging moiety solely between the catalyst entity and the magnetic nanoparticle, the catalyst complex being capable of degrading a polymer into oligomers, trimers, dimers and/or monomers, which catalyst entity comprises an aromatic heterocycle moiety having a positive charge and a moiety having a negative charge, wherein the catalyst entity and bridging moiety are attached such as by a chemical covalent bond, and wherein the bridging moiety and nanoparticle are attached, such as by a covalent bond, wherein the magnetic particles have an average diameter of 2 nm - 500 nm, wherein the bridging moiety is present in an amount of 5 ∗ 10 -6 -0.1 Mole bridging moiety/gr magnetic particle.