Carbon black coupler

US6794428B2 · kind B2 · utility

Assignee

• The Lubrizol Corporation · US

Inventors

• James D. Burrington · Gates Mills, US
• Benny Richardson · Borger, US
• Joseph W. Pialet · Euclid, US
• Ann E. Wykoff · Port Arthur, US
• Roger L. Sowerby · Mentor, US
• Kenneth W. Lee · Borger, US
• Ralph E. Kornbrekke · Chagrin Falls, US
• Ghebrehiwet Ghebremeskel · Houston, US
• Kirk E. Davis · Euclid, US

Key dates

• Filing date: Oct 29, 2002
• Grant date: Sep 21, 2004
• Expiry date: Oct 29, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K9/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A coupler is described for use in carbon black filled rubber compositions. The coupler includes an amine group and a thiol group or a polysulfidic linkage. The coupler improves the interaction of the carbon black with the rubber as measured by a decrease in the tan delta at 60° C. while substantially maintaining the tan delta at 0° C.