PROCESS FOR PRODUCING ELASTOMERIC MOULDINGS AND PRODUCTS OBTAINED THEREBY

摘要

1. A process for the production of elastomeric mouldings in which A) a reaction mixture is introduced into a closed mould, which reaction mixture contains a) an organic polyisocyanate, b) a hydroxyl-group-containing compound having a molecular weight of from 1800 to 12,000, c) a catalyst for the reaction between hydroxyl groups and isocyanate groups, d) an active aromatic diamine having at least one alkyl substituent in the o-position to a first amino group and two alkyl substituents in o-position to a second group and e) air and/or nitrogen dissolved under pressure in one or more of components (a), (b), (c) or (d), B) the reaction mixture is allowed to react in the mould and C) the resultant product is removed from the mould, characterised in that, in addition, in order to accelerate the transition of the air and/or nitrogen from the dissolved state into the dispersed state, when releasing the pressure 0.01 to 1% by weight, based on the amount of component (b), of an inorganic, finely divided, nitrogen-adsorbing agent is used, which is added to one of the components (a), (b), (c) or (d) which contains the air and/or the nitrogen dissolved therein.