| Title of Invention | A PROCESS FOR PREPARING STRUCTURALLY MODIFIED SILICA |
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| Abstract | A structurally coated silica can be prepared by spraying and mixing a pyrogenic silica with water and a coating asen: in a suitable rnixina vessel, then milling: and then conditioning the product. The structurally coated silica can be used as a matting agent in lacquers. |
| Full Text | •Claims: I- A structurally coated silica. 2. A structurally coated silica as claimed in claim 1, wherein it has a carbon content of 10 to 30 wt. %. 3. A structurally coated silica as claimed in claim 1, wherein it has a BET surface area of 80 to 45: m~/g. 4. A structurally coated silica as claimed in claims 1 or lr wherein it has a bulk density of 10 to 60 g/i. 5. A structurally coated silica as claimed in claims 1 to 3, wherein it has a D3? index of 2.4 to 3.9. 6. A process for preparing a structurally coated silica as claimed in claims 1 to 4, wherein a pyrogenic silica is sprayed and mixed with water and a coating agent in a suitable mixing vessel and is then milled and subsequently dried. 7. Use of structurally coated silicas as claimed in claims 1 to 4 as matting agents in lacquers. 8. Lacquers and/or lacquer systems, wherein they contain a structurally coated silica as claimed in claims 1 to 4. |
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1275-chenp-2005-correspondnece-others.pdf
1275-chenp-2005-correspondnece-po.pdf
1275-chenp-2005-description(complete).pdf
| Patent Number | 220002 | ||||||||||||
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| Indian Patent Application Number | 1275/CHENP/2005 | ||||||||||||
| PG Journal Number | 30/2008 | ||||||||||||
| Publication Date | 25-Jul-2008 | ||||||||||||
| Grant Date | 15-May-2008 | ||||||||||||
| Date of Filing | 16-Jun-2005 | ||||||||||||
| Name of Patentee | DEGUSSA AG | ||||||||||||
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Inventors:
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| PCT International Classification Number | C09C 1/30 | ||||||||||||
| PCT International Application Number | PCT/EP2003/12380 | ||||||||||||
| PCT International Filing date | 2003-11-06 | ||||||||||||
PCT Conventions:
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