Back to results
US 7,628,971 B2Granted
Highly dispersible precipitated silica having a high surface area
AssigneeDegussa AG
InventorsOleg Stenzel, Stefan Uhrlandt, Hans-Detlef Luginsland, Andre Wehmeier
Life of this patent
Estimating the term…
Abstract
The present invention relates to a highly dispersible silica which has a high surface area, a process to manufacture the aforesaid silica and its use as a tire filler for utility vehicles, motor cycles and high speed vehicles.
Claims10
A utility vehicle tire, a motor cycle tire or a high speed passenger tire comprising a precipitated silica which has the following properties:
- a BET surface area ranging from
- 200-250
- m2/g,
- a CTAB surface area
- 170-220
- m2/g,
- ranging from
- a DBP number ranging from
- 305-400
- g/(100 g), and
- a Sears number V2 ranging from
- 23-35
- ml/(5 g).
10 more elements
A utility vehicle tire, a motor cycle tire or a high speed passenger tire comprising a precipitated silica which has the following properties:
- a BET surface area ranging from
- 200-250
- m2/g,
- a CTAB surface area
- 170-300
- m2/g,
- ranging from
- a DBP number ranging from
- 305-400
- g/(100 g), and
- a Sears number V2 ranging from
- 23-35
- ml/(5 g).
10 more elements
Dependencies are inferred from the claim text.