ES388404A1 - A procedure for the reticulation of plastic materials and for the vulcanization of elastic materials. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

A process for the crosslinking of plastic materials and for the vulcanization of elastic materials, characterized in that an appropriate amount of an organic peroxide characterized by the presence of arylcycloaliphatic nuclei with 5 o is incorporated into the materials mentioned to be vulcanized. 6 condensed carbon atoms, included in the general formulas **(See formula)** in which: "n" is equal to 0 or 1, the radical being annulled (see formula) in the case of "n" equal to 0, the formula becoming (see formula) and encompassing compounds that have an aryl group attached by condensation to a cycloaliphatic ring of 5 carbon atoms, and the radical is not annulled (see formula) in the case of "n" equal to 1, the formula becoming (see formula) and encompassing compounds that have an aryl group attached by condensation to a cycloaliphatic ring of 6 carbon atoms; R1 and R2, the same or different from each other, can be alcohol, arylalkyl, cycloalcohyl, arylcycloalkyl radicals which can be substituted by alcohol or halogen; tertiary alcohol groups such as tert-butyl, tert-amyl and cumyl are preferred; R3 and R4, R5 and R6 can be hydrogen, alcohol radicals that can be substituted by halogen or oxy, cycloalkoxy or aryl radicals that can be substituted by alcohol, halogen or oxy, and more particularly R5 and R6 can be peroxy radicals OOR1 and OOR2 in which R1 and R2 have the meanings indicated above; R7 and R8 can be hydrogen, alcohol radicals that can be substituted by halogen or by oxy; Ar may be an aryl group having one or more fused rings that may be substituted by alcohol, halogen or nitro, and further hydroxy containing alkoxylates or sulfonate groups, in addition to other materials suitable for crosslinking or vulcanization, such as carbon black, zinc oxide, magnesium oxide, sulfur; because the composition thus prepared is placed in a mold or vulcanization chamber and it is carried out at a temperature comprised between 140 and 190º, preferably between 150 and 170º, for a time comprised between 5 and 200 minutes, preferably during a time between 5 and 15 minutes. (Machine-translation by Google Translate, not legally binding)