Cross-linking agents containing isocyanate groups for nitrile rubbers

US10597467B2 · kind B2 · utility

Assignee

• Arlanxeo Deutschland GmbH · DE

Inventors

• Sven Brandau · Strasbourg, FR
• Michael Klimpel · Langenfeld, DE
• Hans Magg · Bensberg, DE

Key dates

• Filing date: Apr 15, 2011
• Grant date: Mar 24, 2020
• Expiry date: Jan 29, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/34
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

By the use of special cross-linkers that contain at least two isocyanate groups, hydroxyl group-containing optionally hydrogenated nitrile rubber polymers can be successfully cross-linked. Preferred cross-linkers contain allophanate, biuret, uretdione, uretonimine, bridged carbamate, carbodiimide, isocyanurate, iminooxadiazinedione or oxadiazinetrione structural elements.