Process for strengthening the adhesion of polymeric substances to carbonate surfaces

US5063087A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Herbert Eck · Burghausen, DE
• Gerald Fleischmann · Emmerting, DE
• Hohl Horst · Munich, DE
• Helmut Weber · Webster, US

Key dates

• Filing date: Mar 29, 1990
• Grant date: Nov 5, 1991
• Expiry date: Mar 29, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/5406
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a process for strengthening the adhesion of polymeric substances which contain organic groups or are made up of such groups, or substances containing organic groups which can be crosslinked to form polymers, to surfaces containing an inorganic carbonate, preferably alkaline earth metal carbonates, which comprises applying a solution of a phosphorus compound to the surface containing an inorganic carbonate, in which the phosphorus compound is a phosphorus acid or a phosphorus-containing organosilicon compound having at least one group of the formula EQU RSiOP.dbd.O, in which R is an SiC-bonded, monovalent, substituted or unsubstituted hydrocarbon radical, and the solvent is an aprotic organic solvent, removing the solvent and thereafter applying the polymeric substance or substance which can be crosslinked to form a polymer to the surface containing the inorganic carbonate.