Abstract: A method for producing an object by additive manufacturing using a polyamide filament includes performing the additive manufacturing using the polyamide filament and a fused deposition modeling process. The polyamide is a cast polyamide. Advantageously, it is possible that the polyamide can have a Young's modulus in tension of 3,300 MPa to 4,000 MPa, and/or a heat-distortion temperature HDT A of 80° C. to 150° C. and/or a heat-distortion temperature HDT B of 180° C. to 240° C., and/or a yield stress of 85 MPa to 100 MPa and/or a Vicat softening temperature VST/B/50 of 208° C. to 220° C. Advantageously, it is possible that the polyamide can include a polyamide 6, a polyamide 12, a blend thereof, or a copolymer thereof.

Abstract: The invention relates to a security material comprising a carrier and at least one photochromic Protein and/or a mutein of a photochromic protein. The security material is characterized in that it comprises at least one irreversible photosensitive layer on the carrier, and the at least one photochromic protein and/or mutein is contained at least in the at least one photosensitive layer and/or in an optional additional layer. The inventive security material is also characterized in that it is highly forgery-proof, the photochromic biomolecule cannot be removed therefrom in a usable form, and the photochromic biomolecule does not need to be supplied to a large group of clients.

Abstract: The invention relates to a security material comprising a carrier and at least one photochromic Protein and/or a mutein of a photochromic protein. The security material is characterised in that it comprises at least one irreversible photosensitive layer on the carrier, and the at least one photochromic protein and/or mutein is contained at least in the at least one photosensitive layer and/or in an optional additional layer. The inventive security material is also characterised in that it is highly forgery-proof, the photochromic biomolecule cannot be removed therefrom in a usable form, and the photochromic biomolecule does not need to be supplied to a large group of clients.