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US 8,012,253 B2Granted
Efficient matting agents based on precipitated silicas
AssigneeEvonik Degussa GmbH
InventorsJuergen Schubert, Robert Kuhlmann, Hans Dieter Christian
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Abstract
Precipitated silicas and wax-coated precipitated silicas, their preparation, and their use as matting agents in inks and paints, the precipitated silicas characterized by: BET 350-550 m2/g DBP number 320-400 g/100 g d50 5-15 μm, and tamped density 20-90 g/l.
Claims28
A precipitated silica characterized by
- BET
- 350-550 m2/g
- DBP number
- 383-400 g/100 g
- d50
- 5-15 μm, and
- tamped density
- 20-90 g/l.
5 more elements
A wax-coated precipitated silica characterized by
- BET
- 350-550 m2/g
- DBP number
- 383-400 g/100 g
- d50
- 5-15 μm
- tamped density
- 20-90 g/l.
5 more elements
Dependencies are inferred from the claim text.