The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 2012
Filed:
Apr. 09, 2008
Aaron M. Hollman, Hebron, KY (US);
Philippe Schottland, West Chester, OH (US);
Aaron M. Hollman, Hebron, KY (US);
Philippe Schottland, West Chester, OH (US);
Sun Chemical Corp., Parsippany, NJ (US);
Abstract
A pearlescent pigment and a process for enhancing the magnetic properties of a pearlescent pigment. The pearlescent pigment has a layer with regions of γ-FeOand regions of α-FeO. The magnetic properties of a pearlescent pigment may be enhanced by the steps of: providing a platelet pigment with a layer of FeO, with a magnetic susceptibility less than 0.1×10m/kg; reducing some or all of the FeOto FeO; and oxidizing some or all of the FeOto γ-FeO. The color difference (ΔE*) between the provided pigment and the resultant pigment is not more than about 5.