Provided herein is a method of recycling additively manufactured articles or recovered coating material that comprises a crosslinked polymer formed from a single-cure resin comprising a reactive blocked prepolymer, into a regenerated resin useful for additive manufacturing. Recyclable light-polymerizable resins, methods of making recyclable objects from such resins, and methods for sustainable manufacturing are also provided.

A process is described that allows multicomponent polymeric waste materials to be recycled, that does not require the use of chemical solvents and that allows the reuse of waste materials into new products in quantities greater than those of the known techniques.

The present invention relates to methods for reprocessing elastomeric films or articles comprising an elastomer film wherein the elastomeric film is made from a polymer latex comprising: (a) particles of a carboxylated conjugated diene nitrile latex polymer (a) obtainable by free-radical emulsion polymerization of a mixture of ethylenically unsaturated monomers comprising conjugated dienes; monomers selected from ethylenically unsaturated nitrile compounds; ethylenically unsaturated carboxylic acids and/or salts thereof; optionally vinyl aromatic monomers; and optionally alkyl esters of ethylenically unsaturated acids, in combination or association with (b) particles of a latex polymer (b) comprising at least one oxirane-functional group; wherein the monomer composition of the latex polymer (a) is different from the monomer composition of the latex polymer (b) and to the use of the polymer latex to make an elastomeric film obtained from the polymer latex self-healing, repairable and/or recyclable.

The present invention relates to methods for reprocessing elastomeric films or articles comprising an elastomer film wherein the elastomeric film is made from a polymer latex comprising: (a) particles of a carboxylated conjugated diene nitrile latex polymer (a) obtainable by free-radical emulsion polymerization of a mixture of ethylenically unsaturated monomers comprising conjugated dienes; monomers selected from ethylenically unsaturated nitrile compounds; ethylenically unsaturated carboxylic acids and/or salts thereof; optionally vinyl aromatic monomers; and optionally alkyl esters of ethylenically unsaturated acids, in combination or association with (b) particles of a latex polymer (b) comprising at least one oxirane-functional group; wherein the monomer composition of the latex polymer (a) is different from the monomer composition of the latex polymer (b) and to the use of the polymer latex to make an elastomeric film obtained from the polymer latex self-healing, repairable and/or recyclable.

The invention relates to a method for decontaminating recycled plastic materials, which comprises the steps of selecting, grinding, washing, rinsing, drying and decontaminating, wherein decontaminating is carried out by means of the steps of extracting and rinsing, and extracting is carried out using a water-soluble solvent having a boiling point greater than 180 C. at atmospheric pressure.