Polymerizable silicic acid heteropolycondensates and their application

US5233006A · kind A · utility

Assignee

• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Herbert Wolter · Höchberg, DE
• Klaus Rose · Mundelsheim, DE
• Christian Egger · Höchberg, DE

Key dates

• Filing date: Apr 5, 1991
• Grant date: Aug 3, 1993
• Expiry date: Apr 5, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/58
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polycondensates modified with unsaturated organic groups on the basis of rolytically condensable compounds of silicon and optionally other elements from the group B, Al, P, Sn, Pb, the transition metals, the lanthanides and the actinides, in which 5 to 100 mole %, based on the monomer compounds, of the fundamental hydrolytically condensable compounds are selected from silanes of the general formula (I): EQU {X.sub.a R.sub.b Si(R'(A.sub.c).sub.(4-a-b) }.sub.x B (I) in which the groups and indices have the following meaning: PA1 X: hydrogen, halogen, hydroxy, alkoxyl acyloxy, alkyl carbonyl, alkoxycarbonyl or -NR".sub.2 ; PA1 R: alkyl, alkenyl, aryl, alkaryl, or aralkyl; PA1 R': alkylene, arylene or alkylene arylene; PA1 R": hydrogen, alkyl or aryl; PA1 A: O, S, PR", POR", NHC(O)O or NHC(O)NR"; PA1 B: straight chain or branched organic group, which is derived from a compound B' with at least one C.dbd.C double bond (for c=I and A=NHC(O)O or NHC(O)NR"), or at least two C.dbd.C double bonds, and 5 to 50 carbon atoms; PA1 a: 1, 2 or 3; PA1 b: 0, 1 or 2; PA1 c: 0 or 1; PA1 x: whole number, whose maximum value corresponds to the number of double bonds in the compound B' minus 1, or is equ…