Acrylonitrile-silazane copolymers, especially in fiber form, process for preparation thereof and use thereof

US9096702B2 · kind B2 · utility

Assignees

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE
• Clariant Finance (BVI) Limited · VG

Inventors

• Monika Bauer · Seligenstadt, DE
• Daniel Decker · Castle Rock, US
• Guenther Motz · Bayreuth, DE

Key dates

• Filing date: Dec 8, 2010
• Grant date: Aug 4, 2015
• Expiry date: Mar 3, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/6021
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention pertains to a copolymer obtained by reacting a mixture of acrylonitrile or of a mixture of acrylonitrile and an organic molecule that can be copolymerized with acrylonitrile, with which a monomeric, oligomeric and/or polymeric silazane can be obtained, said silazane containing at least one vinylic double bond. The copolymer can be brought into fiber form and/or made infusible. The production of ceramic fibers by pyrolysis is possible with fiber-like copolymers.