Abstract: A precipitated silica characterised by low silanol ratio. The precipitated silica is in particularly suitable for use as filler in elastomeric mixtures.

Abstract: A precipitated silica having a broad particle size distribution and large median particle size as well as its method of manufacture is provided. The precipitated silica has a CTAB surface area SCTAB in the range from 40 to 300 m2/g, a difference between BET surface area SBET and CTAB surface area SCTAB of at least 35 m2/g, a width of the particle size distribution Ld, measured by centrifugal sedimentation, of at least 1.5, an amount of aluminium WA1 in the range from 0.5 to 7.0 wt %, and a median particle size d50, measured by centrifugal sedimentation, such that for a given value of CTAB surface area SCTAB and amount of aluminium WAl, parameter A, defined by the following equation: A=|d50|+0.782×|SCTAB|?8.524×|WAl|.

Abstract: A modified precipitated silica comprising precipitated silica and at least one polymer selected from the group consisting of poly(ethylene glycol) methyl ether methacrylate and poly(vinylphosphonic acid) is useful for the manufacture of peroxide-based whitening oral care compositions having improved stability over time. It is also useful for the manufacture of elastomeric compositions having a performing balance of properties including e.g. high rolling resistance and/or high wear resistance.

Abstract: A precipitated silica characterised by the presence of specific acid sites on its surface and a process for its manufacture.

Abstract: A rubber composition is based on at least one elastomer, a reinforcing inorganic filler, an agent for coupling the elastomer to the reinforcing inorganic filler, and a crosslinking system. The reinforcing inorganic filler comprises at least one silica S having: a CTAB specific surface area SCTAB within a range extending from 40 to 300 m2/g; a difference between the BET specific surface area SBET and the CTAB specific surface area SCTAB of greater than or equal to 35 m2/g; an aluminium content WAl within a range extending from 0.5 to 7.0% by weight relative to the weight of the silica S; a width of the aggregate size distribution Ld, measured by centrifugal sedimentation, of greater than or equal to 1.5; and a median aggregate diameter d50, measured by centrifugal sedimentation, such that for a given value of CTAB specific surface area SCTAB and a given aluminium content WAl, a magnitude A is defined by the following equation (I): A=[d50]+0.782×[SCTAB]?8.

Abstract: A precipitated silica characterised by the presence of specific acid sites on its surface and a process for its manufacture.

Abstract: A precipitated silica characterised by the presence of specific acid sites on its surface and a process for its manufacture.

Abstract: A rubber composition is based on at least one elastomer, a reinforcing inorganic filler, an agent for coupling the elastomer to the reinforcing inorganic filler, and a crosslinking system. The reinforcing inorganic filler comprises at least one silica S having: a CTAB specific surface area SCTAB within a range extending from 40 to 300 m2/g; a difference between the BET specific surface area SBET and the CTAB specific surface area SCTAB of greater than or equal to 35 m2/g; an aluminium content WAl within a range extending from 0.5 to 7.0% by weight relative to the weight of the silica S; a width of the aggregate size distribution Ld, measured by centrifugal sedimentation, of greater than or equal to 1.5; and a median aggregate diameter d50, measured by centrifugal sedimentation, such that for a given value of CTAB specific surface area SCTAB and a given aluminium content WAl, a magnitude A is defined by the following equation (I): A=[d50]+0.782×[SCTAB]?8.

Abstract: A precipitated silica characterised by the presence of specific acid sites on its surface and a process for its manufacture.

Abstract: Precipitated silica having a broad particle size distribution and large median particle size as well as its method of manufacture.