Method for the production of fillers modified with organosilicon compounds, the fillers produced in this manner and their use

US5116886A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Siegfried Wolff · Bornheim, DE
• Udo Gorl · Meckenheim, DE
• Hans Deusser · Karlstein, DE

Key dates

• Filing date: Feb 15, 1991
• Grant date: May 26, 1992
• Expiry date: Feb 15, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/80
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A two-stage method for the surface modification of natural or synthetic, oxide or silicate fillers using organosilicon compounds of the formulas: EQU [R.sub.n.sup.1 (RO).sub.3-n Si--(Alk).sub.m --(Ar).sub.p ]2 [S] x EQU or EQU [R.sub.n.sup.1 (RO).sub.3-n Si--(Alk).sub.m --(Ar).sub.p SCN in which filler and compound are intensively mixed without the addition of further solvents and the homogenized mixture is subjected in a preheated mixer to the hydrophobing reaction.