ES418587A1 - Procedure for preparing elastomeros. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Process for preparing elastomers by hardening (or crosslinking or vulcanization) capable of being carried out at room temperature or at a slightly high temperature, especially masses that harden to form elastomers upon penetration of water at room temperature, suitable for storage with the exclusion of water, but possibly also by the addition of crosslinking agents, the basis of these masses being, in each case, diorganopolysiloxanes which in each case contain terminal units capable of reacting and fillers consisting at least in part of finely divided silicon dioxide reacted with organosilicon compounds, characterized in that the masses to be hardened as silicon dioxide reacted with organosilicon compounds contain that which can be obtained by reaction of organosilicon compounds with silicon dioxide before and/or under the simultaneous action of one so mechanical bidding on the reaction mixture that raises the bulk density of silicon dioxide to 150 to 320 grams/liter and eventually a subsequent mechanical stress that decreases the apparent density of the silicon dioxide reacted with organoilicon compounds at 20 to 85 grams/liter. (Machine-translation by Google Translate, not legally binding)