Polishing compositions
US6280489A · kind A · utility
13Cited by
2References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1999 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Oct 29, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K3/1463
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Polishing compositions with phosphoric ester added to a suspension containing abrasive particles can have an improved ability to have the abrasive particles dispersed again after they are left for an extended period of time such that the particles may have condensed into aggregates. Those with abrasive particles such as diamond powder dispersed in an aqueous solution containing a glycol compound, metallic salt of a higher aliphatic acid and phosphoric ester have an improved polishing ability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.