Caoutchouc mixture, tread made therefrom and tire with this tread

US5681886A · kind A · utility

Assignee

• SP Reifenwerke GmbH · DE

Inventors

• Hans-Bernd Fuchs · Marl, DE
• Gunter Dietrich · Frankfurt, DE
• Ulrich Steinbrecht · Ober-Ramstadt, DE

Key dates

• Filing date: Mar 3, 1995
• Grant date: Oct 28, 1997
• Expiry date: Mar 3, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S152/905
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A rubber mixture vulcanizable with sulphur, a tire tread manufactured from it and also tires with a vulcanized tread are proposed. The rubber mixture contains in each case 100 parts by weight of elastomers, 20 to 80 parts by weight of a copolymer of conjugated diene and vinyl aromatic compound with very low long chain branching manufactured by solution polymerization in a hydrocarbon solvent, 10 to 50 parts by weight of polybutadiene with very low long chain branching, 10 to 30 parts by weight of polyisoprene with a 3,4 bond content of 50 to 70% by weight and 30 to 100 parts by weight of silica as filler material. Through the special combination of the three elastomers with silica as a filler material one obtains an easily processable mixture which leads to vulcanized tire treads with improved grip on wet and dry surfaces.