Cyclic silazanes

US6531620B2 · kind B2 · utility

Assignee

• Consortium für elektrochemische Industrie GmbH · DE

Inventors

• Leonhard Brader · Munich, DE
• Oliver Schäfer · Hersbruck, DE
• Andreas Bauer · Kaarst, DE
• Volker Frey · Burghausen, DE
• Bernd Pachaly · Schweich, DE

Key dates

• Filing date: Sep 27, 2001
• Grant date: Mar 11, 2003
• Expiry date: Sep 27, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/188
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to cyclic silazanes of the formula II in whichR is a divalent, Si—C and C—N-bound, optionally cyano- or halogen-substituted C3-C15-hydrocarbon radical, in which one or more, non-adjacent methylene units may be replaced by —O—, —CO—, —COO—, —OCO—, —OCOO—, —S— or —NRX— groups and in which one or more non-adjacent methine units may be replaced by —N═, —N═N— or —P═ groups, where at least 3 and at most 6 atoms are arranged between the silicon atom and the nitrogen atom of the ring,RX is hydrogen or an optionally halogen-substituted C1-C10-hydrocarbon radical, and R2 is a hydrogen atom or a monovalent, optionally cyano- or halogen-substituted, Si-C- bound C1-C20-hydrocarbon radical or C1-C20-hydrocarbonoxy radical, in each of which one or more non-adjacent methylene units may be replaced by —O—, —CO—, —COO—, —OCO—, —OCOO—, —S— or —NRX— groups and in which one or more non-adjacent methine units may be replaced by —N═, —N═N— …