Organosilicon compounds and process for the preparation thereof
US7943747B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 17, 2006 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Oct 19, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/0838
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Functionalized organosilicon compounds comprising at least one activated azo group of formula (I): [(G0)3SiO1/2]m [(G0)2SiO2/2]n [G0SiO3/2]o [SiO4/2]p [(G2)a(G1)a′(Z-CO—HN═NH—CO-A)SiO(3-a-a′)/2], for example a mixture of silane species of formula (ia): (C2H5O)3Si—(CH2)3—NH—CO—N═N—COOC2H3; with siloxane species of formulae: (2i.1a): [(CH3)3SiO1/2] [(C2H5O)2 {(CH2)3—NH—CO—N═N—COOC2H5} SiO2/2] and (2i.2a): [(CH3)3SiO1/2]2 [(C2H5O) {(CH2)3—NH—CO—N═N—COOC2H5} SiO2/2], are prepared from at least one hydrazino precursor (II) (—HN—NH—) of compound (I), by oxidizing the precursor (II) into an azo group for the compound (I) utilizing at least one oxidizing agent (Ox) and at least one vase (B) and also a supplementary reagent selected from among silanes of formula (III): (G DEG)4-p1Si (G2′)p1 [for example, (CH3)3(C2HSO)Si].
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.