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:
Sep. 22, 2015
Filed:
Dec. 06, 2010
Christian Bauch, Muldenstein, DE;
Sven Holl, Gueckingen, DE;
Rumen Deltschew, Leipzig, DE;
Javad Mohsseni, Bitterfeld-Wolfen, DE;
Andrey Lubentsov, Leipzig, DE;
Christian Bauch, Muldenstein, DE;
Sven Holl, Gueckingen, DE;
Rumen Deltschew, Leipzig, DE;
Javad Mohsseni, Bitterfeld-Wolfen, DE;
Andrey Lubentsov, Leipzig, DE;
Spawnt Private S.a.r.l., , DE;
Abstract
A process for preparing a halogenated polysilane HSiXwith n=1 to 50; 0≦p≦2n+1, and X=F, Cl, Br, I, as an individual compound or a mixture of compounds, from a mixture which includes the halogenated polysilane or in which the halogenated polysilane is formed, additionally includes boron-containing impurities, wherein a) the mixture is admixed with at least 1 ppbw (parts per billion per weight) of a siloxane-forming oxidizing agent or siloxane, the boron-containing impurities forming compounds having a volatility and/or solubility different from the halogenated polysilanes, b) the halogenated polysilane is separated from the compound(s), and c) not more than 1 ppmw of water and not less than 1 ppb of siloxanes are present.