Copolymer rubber containing nitrile groups

US10494467B2 · kind B2 · utility

Assignee

• Arlanxeo Deutschland GmbH · DE

Inventors

• Werner Obrecht · Moers, DE
• Hiyam Salem · Cologne, DE
• Susanna LIEBER · Kaiserslautern, DE
• Irene Moll · Neuss, DE
• Andreas Kaiser · Villeneuve-d'Ascq, FR

Key dates

• Filing date: Oct 29, 2014
• Grant date: Dec 3, 2019
• Expiry date: Jan 1, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L15/005
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A copolymer rubber includes, based on a total amount of 100% by weight of all monomer units, α,β-ethylenically unsaturated nitrile units, conjugated diene units, and α,β-ethylenically unsaturated monocarboxylic acid monoester units selected from the group consisting of methoxyethyl (meth)acrylates, and polyethylene glycol (meth)acrylates. The rubber has a glass transition temperature lower than −20° C., an oil swelling of not more than 20 vol %, and provides a balance of good low-temperature stability and oil resistance.