Rare earth metal sulfide pigments comprising fluorine values
US5501733A · kind A · utility
11Cited by
1References
49Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1994 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | Jun 9, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K9/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Fluoridated particulates, especially external face surface-fluoridated particulates of the rare earth metal sesquisulfide pigments/colorants, advantageously encapsulated within a coating layer of at least one transparent oxide or hydrate thereof, e.g., silica, have improved chromatic properties and are well suited for the coloration/pigmentation of a wide variety of materials and substrates, for example paints, plastics, resins, varnishes, rubbers, ceramics, glazes, papers, inks, leathers, cosmetics, dyes, coatings, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.