Pigment for shielding of ultraviolet radiation
申请(专利)号:
US09/109085
申请日期:
19980702
公开/公告号:
US06086666A
公开/公告日期:
20000711
申请(专利权)人:
MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
被引量:
摘要:
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.
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