Kinetically stable chlorinated polysilanes and production thereof

US9040009B2 · kind B2 · utility

Assignee

• Spawnt Private S.à.r.l. · LU

Inventors

• Norbert Auner · Eutin, DE
• Christian Bauch · Muldenstein, DE
• Sven Holl · Diez, DE
• Rumen Deltschew · Leipzig, DE
• Javad Mohsseni · Bitterfeld-Wolfen, DE
• Gerd Lippold · Leipzig, DE
• Thoralf Gebel · Dresden, DE

Key dates

• Filing date: Dec 6, 2010
• Grant date: May 26, 2015
• Expiry date: Apr 29, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Kinetically stable halogenated polysilanes include mixture of compounds having respectively at least four silicon atoms bound together, the substituents thereof comprising chlorine, and chlorine and hydrogen, and in the composition thereof, the atomic ratio of substituent to silicon is at least 1:1, wherein a) the kinetically stable halogenated polysilanes have a kinetically high stability in relation to oxidative splitting by chlorine, and the degree of conversion at temperatures of 120° C. within 10 hours with an excess of chlorine gas at 1013 hPa does not exceed 30 mol %, and b) the kinetically stable halogenated polysilanes have a percentage of branching points in the polysilane molecules of more than 8 mol %.