Pigment for shielding of ultraviolet radiation
US6086666A · kind A · utility
14Cited by
1References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1998 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Jul 2, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An ultraviolet radiation shielding pigment having a high power of shielding of ultraviolet radiation, particularly UV-A, a low cohesive force, and excellent extensibility and adhesiveness as a pigment for cosmetics. A pigment for shielding an ultraviolet radiation which comprises a flaky powder having particle surfaces coated with particles of barium sulfate having an average diameter of 0.1 to 2.0 microns, and with needle crystal particles of zinc oxide having an average major-axis diameter of 0.05 to 1.5 microns, and a process for manufacturing it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.