Plastified novolaks as additive to rubber mixtures

US6828391B2 · kind B2 · utility

Assignee

• Solutia Germany GmbH & Co. KG · DE

Inventors

• Thomas Burkhart · Dahn, DE
• Siegfried Wallenwein · Büttelborn, DE

Key dates

• Filing date: Dec 12, 2002
• Grant date: Dec 7, 2004
• Expiry date: Jan 3, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L61/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Use, as modifier resin for rubber mixtures, of novolaks ABC plastified with terpene-type olefinically unsaturated natural substances C, where the ratio of the molar amount of the phenol or phenol derivative B and the molar amount of the natural substance C in the modified novolak is from 1:6 to 6:1, process for increasing the tear propagation resistance and reducing the compression set of rubber vulcanizates by adding these modifier resins to rubber mixtures, and components molded from vulcanizates thus prepared.