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. 10, 2007
Filed:
Sep. 19, 2002
Walther Glaubitt, Margetshöchheim, DE;
Monika Kursawe, Seeheim-Jugenheim, DE;
Andreas Gombert, Freiburg, DE;
Thomas Hofmann, Fürth, DE;
Walther Glaubitt, Margetshöchheim, DE;
Monika Kursawe, Seeheim-Jugenheim, DE;
Andreas Gombert, Freiburg, DE;
Thomas Hofmann, Fürth, DE;
Merck Patent, GmbH, Darmstadt, DE;
Abstract
Hybrid sol comprising [SiO(OH)]particles, where 0<y<4 and 0<x<2, which consist of a mixture of a first fraction of particles having a particle size of 4–15 nm and a second fraction of particles having a mean particle size of 15–60 nm, water and a solvent; obtainable by hydrolytic polycondensation of tetraalkoxysilanes in an aqueous, solvent-containing medium with addition of a monodisperse silicon oxide hydroxide sol having a mean particle size of 15–60 nm and a maximum standard deviation of 20%, and the preparation and use thereof.