method of producing a colloidal latex masterbatch or a colloidal latex ausgangsmischung by copräzipitation and thus preserved product

摘要

P the present invention relates to a process for obtaining a masterbatch silica - latex by coprecipitation, as well as the product obtained. / p & & p & the process is characterized by the fact that it is simultaneously introduced into the reaction zone, a mixture of an aqueous solution of an alkaline silicate and of a suspension containing a latex and a solution of at least one salt of an acid of the group of hydrochloric acid and sulfuric acid and of a metal of group of the zinc, magnesium, calcium, while maintaining the ph of the reaction medium to the value of the precipitation of the metal salt. / p & & p & the present invention applies to the field of the reinforcement of elastomers. / p