Cerium based glass polishing compositions
US4601755A · kind A · utility
32Cited by
4References
59Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1984 |
| Grant date | Jul 22, 1986 |
| Priority date | — |
| Expiry date | Jul 30, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K3/1454
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Cerium based glass polishing compositions, well adapted for the polishing, e.g., of optical glass, are comprised of (i) at least one crystalline phase of CeO.sub.2 type, and (ii) a crystalline phase which comprises a rare earth pyrosilicate having the formula Ln.sub.2-x Ce.sub.x Si.sub.2 O.sub.7, wherein Ln is at least one lanthanide or yttrium and x is a number ranging from zero to less than 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.