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:
Nov. 22, 2016
Filed:
Sep. 26, 2012
Ina Metz, Erkrath, DE;
Christian Scheidt, Munster, DE;
Stephan-peter Bloess, Burscheid, DE;
Kronos International, Inc., Leverkusen, DE;
Abstract
The invention relates to a stable, highly concentrated, aqueous suspension of nanoparticles, particularly of titanium dioxide particles, a method for production, and use of the suspension, e.g. for coating or impregnation, or as an additive in organic or inorganic matrices. The suspension contains a first dispersant based on a polymeric alkoxylate and a second dispersant selected from the group of amino alcohols. The suspension is preferably characterized by the fact that its stability is preserved even during and after vigorous dispersion in an attrition mill and no increase in viscosity occurs. In a preferred embodiment, the viscosity declines by up to 10 to 50% as a function of the milling time. In a further embodiment, the suspension can be dried and subsequently redispersed, without the state of dispersion deteriorating.