Abstract: A chemically modified precipitated silica characterised by the presence of alkyl moieties chemically bound to the silica and a process for its manufacture.

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 precipitated silica suitable for thermal insulation applications 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: Precipitated silica having large median particle size for use as reinforcing filler in elastomeric compositions as well as its method of manufacture. In particular, a precipitated silica characterised by a CTAB surface area SCTAB in the range from 70 to 350 m2/g; an amount WM of at least one metal M selected from elements of groups 3, 4 and 5 of at least 0.1 mol %; and a median particle size d50, measured by centrifugal sedimentation, such that: |d50|?183×|RION|×|WM|?0.67×|SCTAB|+233 (I) wherein |d50| represents the numerical value of median particle size d50 measured by centrifugal sedimentation and expressed in nm; |RION|, the numerical value of the ionic radius of metal M expressed in nm; |SCTAB|, the numerical value of the CTAB surface area SCTAB expressed in m2/g; and |WM|, the numerical value of the percentage molar amount of the metal WM.

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 suitable for thermal insulation applications and a process for its manufacture.

Abstract: A chemically modified precipitated silica characterised by the presence of alkyl moieties chemically bound to the silica 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.