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:
Aug. 28, 2007
Filed:
Nov. 24, 2004
Modasser El-shoubary, Crofton, MD (US);
Robert M. Hopkins, Reisterstown, MD (US);
Karen L. Bowen, Pasadena, MD (US);
David E. Bell, Pasadena, MD (US);
Modasser El-Shoubary, Crofton, MD (US);
Robert M. Hopkins, Reisterstown, MD (US);
Karen L. Bowen, Pasadena, MD (US);
David E. Bell, Pasadena, MD (US);
Millennium Inorganic Chemicals, Inc., Hunt Valley, MD (US);
Abstract
In various embodiments, a pigment composition is provided comprising a base particle and a dispersing agent, the dispersing agent comprising a salt and/or ester of: (i) an amine, alcohol, and/or alkanol amine and (ii) a polyprotic acid, wherein the mole ratio of the amine, alcohol, and/or alkanol amine to the polyprotic acid is greater than 3:1. In various embodiments, the pigments have improved stability, hiding power, tint strength, and/or gloss.