New flexible packages, method for their manufacture and application thereof

Flexible packaging comprises at least two different material layers, which are connected by an adhesive layer comprising a carbodiimide or a mixture many carbodiimides (I) or (II). Flexible packaging comprises at least two different material layers, which are connected by an adhesive layer comprising a carbodiimide or a mixture many carbodiimides of formula (R1-(-N=C=N-R3-)mR2) (I) or (R1-[(N=C=N-Y1) p-(B1) q] o-X) (II). R3 : aromatic or araliphatic residue (where aromatic or araliphatic residue carrying carbodiimide group, carries optionally aliphatic and/or cycloaliphatic substituents with at least 2 carbon atoms carrying heteroatoms, in at least one ortho-position to the aromatic carbon atom); m : >= 1, preferably 1-5; R1 : 1-18C-alkyl, 5-18C-cycloalkyl-, aryl, 7-18C-aralkyl, -R-NHCOS-R4, -R-COOR4, -R-OR4, -R-N(R4) 2, -R-SR4, -R-OH, -R-NH 2, -R-NHR4, -R-epoxy, -R-NCO, -R-NHCONHR4, -R-NHCONR1R5 or -R-NHCOOR6; R : aromatic, aliphatic, cycloaliphatic and/or araliphatic residue; R2 : H, -N=C=N-Aryl, -N=C=N-Alkyl, -N=C=N-cycloalkyl, -N=C=N-aralkyl, -NCO, -NHCONHR, -NHCONR4R5, -NHCOOR6, -NHCOS-R4, -COOR4, -OR4, -N(R4) 2, -SR4, -OH, -NH 2, -NHR4; R4, R5 : 1-20C alkyl, 3-20C cycloalkyl, aryl, 7-18C aralkyl, oligo-/polyethylene or -propylene glycol; R6 : R4 or polyester or polyamide; Y1 : 1-18C-alkylene, 5-18C-cycloalkylene, arylene, 7-18C-aralkylene; p, q, o : 1-500, preferably 1-100; B1 : -NH-CO-NH-Z-, -NH-COO-Z-, -NH-COS-Z-; X : H, -OH, -SH, -NH 2, -OR4, -N(R4) 2, -SR4, -NHR4, NR4R5, -OCO-NH-R7, NHCO-, -NH-R7, -S-CO-NH-R7; R7 : 1-18C-alkyl, 5-18C-cycloalkyl, aryl, 7-18C-aralkyl, -R8-NH-COS-R4, -R8-COOR4, -R8-OR4, -R8-N(R4 )2, - R8-SR4, -R8-OH, -R8-NH 2, -R8-NHR4, -R8-epoxy, -R8-NCO, -R8-NHCONHR4, -R8-NHCONR4R5 or -R8-NH-COOR6; R8 : aromatic or araliphatic residue; and Z : Y1, -polyester-, -polyether- or -polyamide. Independent claims are also included for: (1) producing the flexible packaging, comprising knife coating the adhesive layer made of polymeric systems comprising polyamides, copolyamides, polyolefins, ethylene vinyl acetate copolymers, polyurethanes, thermoplastic polyurethanes, polyesters, polyacrylates and/or vinylpyrrolidone/vinyl acetate copolymers, polyester urethanes, acrylates, polyether or polyether urethanes, (I), (II), and optionally additional additives on the surface of at least one material layer, placing additional material layers on the adhesive layer, and curing the adhesive layer; and (2) use of the polymeric system for bonding at l