Silylation reagents for preparing binders which are soluble in aqueous alkali and contain silanyl groups in the side chain

US5162559A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Peter Wilharm · Meitingen, DE
• Juergen Fuchs · Flörsheim, DE

Key dates

• Filing date: Apr 3, 1989
• Grant date: Nov 10, 1992
• Expiry date: Apr 3, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/0812
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A silylation reagent is useful for preparing binders which are soluble in aqueous alkali and contain silanyl groups in the side chain, comprises a compound having the formula I EQU (A-B.sub.n).sub.m C (I) wherein PA0 A denotes a silanyl group containing at least 2 silicon atoms in total linked to each other, but not more than 3 silicon atoms linked to each other in an unbranched chain of silicon atoms; PA0 B denotes a bridging group; PA0 C denotes a functional group which is capable of forming a covalent bond with an aromatic, aliphatic or cycloaliphatic hydroxyl group; PA0 n denotes 0 or 1; and PA0 m denotes 1 or 2. Binders prepared with the silylation reagents described are soluble in aqueous alkali and exhibit a high resistance to plasma etching and a high storage stability, and are resistant to rediation with a wavelength of greater than 300 nm.