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. 02, 2016
Filed:
Dec. 08, 2009
Timothy E. Fletcher, Worms, DE;
Timothy E. Fletcher, Worms, DE;
Grace GmbH & Co. KG, Worms, DE;
Abstract
The present invention relates to anti-corrosive particles based on inorganic oxide products such as silica or alumina modified with polyvalent metal cations optionally comprising anions of weak acids which may be inorganic or organic in nature and their conjugate species. In particular, the present invention is concerned with anti-corrosive pigment particles comprising inorganic oxides or mixtures of inorganic oxides displaying mesoporosity and/or macroporosity such that the average pore size, averaged over the mixture of inorganic oxides where more than one oxide is involved is greater than 2 nm and the average pore volume is greater than 0.2 ml/g. The present invention is also related to methods of making such particles and to anti-corrosive compositions made with them. The present invention further relates to articles to which the anti-corrosive compositions have been applied.