Use of Polyurethane Elastomers Based on or Use of Kit-Of-Parts Comprising MDI-Polyadipate Prepolymers and Polyamine Chain-Extenders in Pulp and Paper Applications, Preferably in the Manufacture of Die Cutting Pads, Anvil Covers, Rollers and Zero Crush Wheels

A method for producing a product in pulp or paper applications comprising providing a polyurethane elastomer,

• obtained from (embodiment I) or obtainable from (embodiment II) the reaction (RE) of
• (A) at least one NCO-terminated prepolymer, obtainable or obtained from the reaction (RP) of
• (A1) at least one diphenylmethane diisocyanate, optionally modified by urethane- and/or carbodiimide-groups,
• (A2) at least one polyadipate polyol, with a number-average molar mass Mn of from 800 to 4000 g/mol, wherein Mn has been determined by gel permeation chromatography as referred to in the specification, and a functionality of 2 to 4,
• (A3) optionally at least one lactone-based polyester polyol and
• (A4) optionally at least one catalyst and/or at least one additive,
• (B) at least one chain extender, which is one of
• i) at least one polyamine, selected from the group consisting of isophoronediamine, ethylenediamine, 1,2-propylenediamine, 1,3-propylenediamine, N-methylpropylene-1,3-diamine, N,N′-dimethylethylenediamine, 4,4′-methylenebis (2-chloroaniline), 2,4-toluenediamine, 2,6-toluenediamine, 6-methyl-2,4-bis(methylthio)phenylene-1,3-diamine, 2-methyl-4,6-bis(methylthio) phenylene-1,3-diamine, 3,5-diethyl-2,4-toluenediamine, 3,5-diethyl-2,6-toluenediamine, and primary mono-, di-, tri-, or tetraalkyl-substituted 4,4′-diaminodiphenylmethanes, or
• ii) a mixture of at least one polyamine with a functionality of at least 2 and at least one polyol with a functionality of at least 2,
• (C) optionally at least one catalyst,
• (D) optionally at least one additive and
• (E) optionally at least one filler,
• with the provisio that no polyether carbonate polyols are present in the reaction (RE),
• and with the provisio that in embodiment II component (A) has a monomeric diisocyanate content of ≤8 weight % determined by gas chromatography with an internal standard to DIN EN ISO 10283:2007-11.