Rubber blend, sulfur-crosslinkable rubber mixture, and vehicle tire

US11008446B2 · kind B2 · utility

Assignee

• Continental Reifen Deutschland GmbH · DE

Inventors

• Carla Recker · Hannover, DE
• Catarina Sa · Farster Bauerschaft, DE
• Kathrin Wehming-Bomkamp · Hannover, DE
• Viktoria Pavon Sierra · Hannover, DE
• Norbert Mueller · Ostseebad Nienhagen, DE
• Michael Radke · Hannover, DE

Key dates

• Filing date: Jul 17, 2017
• Grant date: May 18, 2021
• Expiry date: Jul 30, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K3/36
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a rubber blend, to a sulfur-crosslinkable rubber mixture comprising the rubber blend and to a vehicle tire comprising such a rubber mixture. The rubber blend comprises at least one solution-polymerized diene polymer A of high molecular weight and at least one solution-polymerized polymer B of low molecular weight, wherein at least one of polymers A and B has been functionalized at the chain end and/or along the polymer chain and/or at a coupling site with at least one group selected from epoxy groups, hydroxyl groups, carboxyl groups, silane sulfide groups, amino groups, siloxane groups, organosilicon groups, phthalocyanine groups and amino group-containing alkoxysilyl groups andwherein the rubber blend includes 35 to 100 phr (based on the at least one solution-polymerized diene polymer A of high molecular weight), preferably 35 to 70 phr, of the at least one solution-polymerized polymer B of low molecular weight.