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:
Feb. 24, 2015
Filed:
Jun. 10, 2010
Monika Bauer, Koenigs Wusterhausen, DE;
Hans-juergen Glaesel, Leipzig, DE;
Monika Bauer, Koenigs Wusterhausen, DE;
Hans-Juergen Glaesel, Leipzig, DE;
Abstract
The present invention relates to polysiloxane nanoparticles having the following properties: an average particle size d(measured using REM recordings) in the range of 10-200 nm, a specific surface area Aof at least 50 m/g, a pore volume of at least 0.2 cm/g, an average pore volume dof at least 0.8 nm, wherein the particles have groups that contain carbon, which groups are bonded to the silicon at least partially in the form of unsubstituted or substituted alkyl, alkenyl, aryl, arylalkyl, or alkylaryl groups. Said polysiloxane nanoparticles can be produced, among other things, in that either a silazane or a mixture of different silazanes having one or more —[Si(R)(R)—NR]— units and/or a silane or a mixture of different silanes having the formula R'—SiXor an oligosiloxane obtainable by means of hydrolytic condensation of said silane/said silanes or a mixture of such oligosiloxanes are provided in a solvent and brought in contact with a strongly alkaline medium in such a way that the pH is not below 13 after the addition thereof. In specific embodiments, synthesis in acid is also successful.