Title:
SLURRY COMPOSITION AND METHOD OF USE
Document Type and Number:
WIPO Patent Application WO2004106455
Kind Code:
A3
Abstract:
The present invention provides an aqueous slurry composition that comprises cerium oxide and/or cerium oxide-containing mixed rare earth oxide abrasive particles, a polyacrylate, and an agent that retards hard settling. The agent that retards hard settling is preferably a polysaccharide such as xanthan gum, microcrystalline cellulose and/or sodium alginate, the latter of which may be treated with a divalent metal salt such as calcium carbonate. The slurry composition according to the invention can be used to polish glass and glass ceramics at a high removal rate, but does not hard settle upon extended static conditions and can be easily resuspended. The present invention also provides a method of polishing a glass or glass ceramic substrate using the slurry composition.
Inventors:
FERRANTI STEVEN A (US)
ZAGARI DANA L (US)
BURM LEVERN G JR (US)
GOFF KARLA MARIE (US)
ZAGARI DANA L (US)
BURM LEVERN G JR (US)
GOFF KARLA MARIE (US)
Application Number:
PCT/US2004/011135
Publication Date:
July 21, 2005
Filing Date:
April 09, 2004
Export Citation:
Assignee:
FERRO CORP (US)
FERRANTI STEVEN A (US)
ZAGARI DANA L (US)
BURM LEVERN G JR (US)
GOFF KARLA MARIE (US)
FERRANTI STEVEN A (US)
ZAGARI DANA L (US)
BURM LEVERN G JR (US)
GOFF KARLA MARIE (US)
International Classes:
C03C19/00; C09K3/14; (IPC1-7): C09K3/14; B24B1/00; B24B7/19; B24B7/30; B24D3/02; C09C1/68
Domestic Patent References:
| WO2002096999A1 | 2002-12-05 |
Foreign References:
| US5266088A | 1993-11-30 | |||
| US20040010978A1 | 2004-01-22 | |||
| US20040031206A1 | 2004-02-19 | |||
| US5000761A | 1991-03-19 | |||
| JP2000019804A | 2000-01-21 |
Download PDF: