Particle composite having irregular surface, method for the production and use thereof

US7537834B2 · kind B2 · utility

Assignee

• Carl Freudenberg KG · DE

Inventors

• Thomas Ruehle · Mannheim, DE
• Dirk Schubert · Eggolsheim, DE
• Juergen Henke · Viernheim, DE
• Achim Gruber · Hannover, DE
• Gregor Grun · Zweibrücken, DE

Key dates

• Filing date: Sep 25, 2004
• Grant date: May 26, 2009
• Expiry date: Jul 12, 2025

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2995
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A particle composite including carrier particles having an average diameter of less than 5 μm. The particle composite is surrounded by a layer made of oxidic material having an irregular surface. Particles, which are made of an active material and which have an average diameter of less than 1 μm are applied to the layer. The particle composite can be used as a filling substance in polymers and enables the content of active material for comparable properties to be reduced or improves the properties of filled materials, e.g. resistance to aging of elastomers.