Hydrolyzable, fluorinated silanes, method of their production and their use for producing silicic acid polycondensates and hetero silicic acid polycondensates

US5973176A · kind A · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Christof Roscher · Würzburg, DE
• Michael Popall · Coburg, DE
• Birke Olsowski · Veitshöchheim, DE

Key dates

• Filing date: Apr 3, 1997
• Grant date: Oct 26, 1999
• Expiry date: Apr 3, 2017

Classification

• Technology area (CPC G): Physics
• CPC primary: G03F7/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to hydrolyzable fluorinate silanes, methods of their roduction and of their use for producing silicic acid polycondensates and hetero silicic acid polycondensats The silanes in accordance with the invention are of the general formula: {[R'-(Y).sub.e ].sub.c+1 (C.sub.6 F.sub.4-c) (C.sub.6 F.sub.4).sub.d }.sub.f SiR.sub.a X.sub.b (I) in which the groups and indices are identical or different and have the following meaning: PA1 R=alkyl, alkenyl, aryl, alkylaryl or arylalkyl, substituted if required, each with 1 to 15 carbon atoms, whereby the groups may be interrupted by oxygen or sulfur atoms, ester, carbonyl, amide or amino groups; PA1 R'=I, Br, Cl (if d.noteq.0), F (if d.noteq.0), H (if X.noteq.H or R.noteq.methyl or e=1) or an organic group with 1 to 50 carbon atoms; PA1 X=hydrogen, halogen except fluorine, hydroxy, alkoxy, acyloxy, alkylcarbonyl, alkoxycarbonyl or NR".sub.2, with R"=hydrogen, alkyl or aryl; PA1 Y=O, S, NH or NR', where R' is an organic group with 1 to 50 carbon atoms; PA1 a=0, 1 or 2; PA1 b=1, 2 or 3; PA1 c=0 or 1; PA1 d=0 to 9; PA1 e=0 or 1; PA1 f=1, 2 or 3, with a+b+f=4.