Composites and methods for their production

US7399804B2 · kind B2 · utility

Assignee

• ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL) · CH

Inventors

• Christopher Plummer · Flint Mountain, GB
• Laszlo Garamszegi · Mission Viejo, US
• Yves Leterrier · Lausanne, CH
• Marlene Rodlert · Yverdon-les-Bains, CH
• Jan-Anders Manson · Chexbres, CH

Key dates

• Filing date: Aug 13, 2002
• Grant date: Jul 15, 2008
• Expiry date: Feb 16, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K9/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Intercalates and exfoliates formed from layered materials and dendritic polymers are disclosed, together with the uses of these materials, e.g. in producing composite materials. The dispersion of layered materials in a dendritic polymer matrix (hyperbranched polymers, star shaped polymers or star branched polymers) or has not been disclosed in the prior art. The high number of end-groups per molecule of dendritic polymer combined with their unique globular architectures leads to large intergallery spacings when intercalated in layered silicates and particularly facile exfoliation in spite of the high molar mass of the dendritic polymer. The excellent processability and potential high reactivity of dendritic polymers makes them extremely promising for thermoset applications, and coatings.