Silanes, process for their preparation and their application to prepare polymers and polycondensates

US5399738A · 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: Mar 21, 1995
• 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

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: PA0 X: hydrogen, halogen, hydroxy, alkoxy, acyloxy, alkyl carbonyl, alkoxycaryl or --NR".sub.2 ; PA0 R: alkyl, alkenyl, aryl, alkaryl, or aralkyl; PA0 R': alkylene, arylene or alkylene arylene; PA0 R": hydrogen, alkyl or aryl; PA0 A: O, S, PR", POR", NHC(O)O or NHC(O)NR"; PA0 B: straight chain or branched organic group, which is derived from a B' compound with at least one C.dbd.C double bond for c=1 and A=NHC(O)O or NHC(O)NR") or at least two C.dbd.C double bonds, and 5 to 50 carbon atoms; PA0 a: 1, 2 or 3; PA0 b: 0, 1 or 2; PA0 c: 0 or 1; PA0 x: whole number, whose maximum value corresponds to the number of double bonds in compound B' minus 1, or is equal to the number of double bonds in compound B', when c=1 and A stands for NHC(O)O or NHC(O)NR"; are suitable to prepare homo and copolycondensates and homo or copolymers according to the sol-gel method or by photochemical or thermal polymerization.