precipitated silica, elastomer composition, vulcanized having a filler for reinforcement, road tire and process for preparing microporous precipitated silica

摘要

precipitated silica, vulcanized elastomer composition having a reinforcement filler, road tire and process for preparing microporous precipitated silica a microporous precipitated silica having the following physicochemical parameters is described here: ctab surface area of 50 to 300 m2 / g; bet / ctab ratio ³ 1.3; relative amplitude g of pore size distribution = 3.5 g nm / ml. the precipitated silica also has a sears index of 10 to 28 ml / 5 g and a sears / ctab ratio = 0.16 ml / 5 m2. also described here are compositions of vulcanized and vulcanizable elastomers, for example tires, containing microporous precipitated silica.