Claims
- 1. A mechanically strong, vulcanized elastomeric matrix having a reinforcing filler material homogeneously dispersed and distributed therethrough, said reinforcing filler material comprising finely divided precipitated silica particulates and said precipitated silica particulates deriving from a powder having a CTAB specific surface ranging from 100 to 140 m2/g, a median diameter φ50, after ultrasonic disintegration, less than 2.8 μm, exhibiting an ultrasonic disintegration factor FD greater than 3 ml, having a BET specific surface ranging from 100 to 200 m2/g, having a mean particle size greater than 15 μm, a packing density in the tamped state of at least 0.17, and a DOP oil uptake ranging from 150 to 400 ml/100 g.
- 2. The reinforced matrix of claim 1, wherein the mean particle size of the powder is between 20 μm and 150 μm.
- 3. The reinforced matrix of 1, wherein the mean particle size of the powder is between 30 μm and 100 μm.
- 4. A mechanically strong, vulcanized elastomeric matrix having a reinforcing filler material homogeneously dispersed and distributed therethrough, said reinforcing filler material comprising finely divided precipitated silica particulates and said precipitated silica particulates deriving from substantially spherical beads having a CTAB specific surface ranging from 100 to 140 m2/g, a median diameter φ50, after ultrasonic disintegration, less than 2.8 μm, exhibiting an ultrasonic disintegration factor FD greater than 3 ml, having a BET specific surface ranging from 100 to 200 m2/g, having a mean particle size of at least 80 μm, a packing density in the tamped state of at least 0.17, and a DOP oil uptake ranging from 150 to 400 ml/100 g.
- 5. A mechanically strong, vulcanized elastomeric matrix having a reinforcing filler material homogeneously dispersed and distributed therethrough, said reinforcing filler material comprising finely divided precipitated silica particulates and said precipitated silica particulates deriving from granulates having a CTAB specific surface ranging from 100 to 140 m2/g, a median diameter φ50, after ultrasonic disintegration, less than 2.8 μm exhibiting an ultrasonic disintegration factor FD greater than 3 ml, having a BET specific surface ranging from 100 to 200 m2/g, having a dimension of at least 1 mm along the longest axis thereof, a packing density in the tamped state of at least 0.27, and a DOP oil uptake ranging from 150 to 400 ml/100 g.
- 6. A mechanically strong, vulcanized elastomeric matrix having a reinforcing filler material homogenously dispersed and distributed therethrough, said reinforcing filler material comprising finely divided precipitated silica particulates and said precipitated silica particulates deriving from precipitated silica having a CTAB specific surface (SCTAB) of between 100 and 140 m2/g, a pore distribution such that the pore volume consisting of the pores whose diameter is between 175 and 275 Å represents less than 50% of the pore volume consisting of the pores of diameter smaller than or equal to 400 Å, a median diameter (φ50), after ultrasonic disintegration, smaller than 4.5 μm, and the precipitated silica is in a form chosen from the group consisting of: a powder with an average size of at least 15 μm, substantially spherical beads with an average size of at least 80 μm, granules having a size of at least 1 mm, and any combination thereof.
Priority Claims (1)
Number |
Date |
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93/11554 |
Sep 1993 |
FR |
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Parent Case Info
This application is a divisional application of application Ser. No. 09/157,414 filed Sep. 21, 1998, now U.S. Pat. No. 6,001,322, which is a divisional application of application Ser. No. 08/886,146 filed Jun. 30, 1997, now U.S. Pat. No. 5,882,617, which is a continuation of application Ser. No. 08/446,796 filed Aug. 21, 1995, now abandoned, which is a national stage application filed under 35 U.S.C. §317 of International Application No. PCT/FR94/01144 filed Sep. 29, 1994 now abandoned.
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Continuations (1)
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Parent |
08/446796 |
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US |
Child |
08/886146 |
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US |