Patent number: 7387673
Abstract: A pigment prepared using nanofillers with modified properties because of the powder size being below 100 nanometers. Blue, yellow and brown pigments are illustrated. Nanoscale coated, un-coated, nanorods type fillers are included. The pigment nanopowders taught comprise one or more elements from the group actinium, antimony, aluminum, arsenic, barium, beryllium, bismuth, cadmium, calcium, cerium, cesium, cobalt, copper, dysprosium, erbium, europium, gadolinium, gallium, gold, hafnium, hydrogen, indium, iridium, iron, lanthanum, lithium, magnesium, manganese, mendelevium, mercury, molybdenum, neodymium, neptunium, nickel, niobium, nitrogen, oxygen, osmium, palladium, platinum, potassium, praseodymium, promethium, protactinium, rhenium, rubidium, scandium, silver, sodium, strontium, sulfur, selenium, tantalum, terbium, thallium, thorium, tin, titanium, tungsten, vanadium, ytterbium, yttrium, zinc, and zirconium.
Type:
Grant
Filed:
May 20, 2003
Date of Patent:
June 17, 2008
Assignee:
PPG Industries Ohio, Inc.
Inventors:
Tapesh Yadav, Clayton Kostelecky