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:
May. 28, 2019
Filed:
Jun. 21, 2013
Nanofluor Gmbh, Berlin, DE;
Erhard Kemnitz, Berlin, DE;
NANOFLUOR GMBH, Berlin, DE;
Abstract
The invention relates to a method for obtaining a calcium fluoride (CaF) sol solution, comprising the steps of providing a calcium precursor in a first volume in a non-aqueous solvent, and adding, in a second volume, 1.85 to 2.05 molar equivalents of anhydrous hydrogen fluoride (n) per mole calcium precursor to said first volume, and/or a magnesium additive is added before or after said fluorination with hydrogen fluoride with additional 1.85 to 2.05 molar equivalents of anhydrous hydrogen fluoride (n) per mole magnesium additive. Additionally or alternatively at least one metal additive precursor is added before or after the fluorination with hydrogen fluoride wherein an additional amount of hydrogen fluoride (n) is present in the fluorination step. The invention further relates to sol solutions, method of applying the sol solutions of the invention to surfaces as a coating, and to antireflective coatings obtained thereby.