Sulfur-crosslinkable rubber mixture

Patent metadata

Field	Value
Publication number	US-2016200141-A1
Application number	US-201615074672-A
Country	US
Kind code	A1
Filing date	Mar 18, 2016
Priority date	Sep 27, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

A sulfur-crosslinkable rubber mixture, in particular for vehicle tires, belts, straps and tubes is disclosed. The rubber mixture contains at least the following constituents: 50 to 95 phr of at least one solution-polymerized styrene-butadiene rubber which is amino-functionalized and has a styrene content of 0.1 to 12% by weight and which, when unvulcanized, has a glass transition temperature of −75 to −120° C. when measured by DSC, and 5 to 95 phr of at least one additional rubber and 20 to 150 phr of at least one carbon black.

First claim

What is claimed is:

1 . A sulfur-crosslinkable rubber mixture comprising:
5 to 95 phr of at least one solution-polymerized styrene-butadiene rubber, which is amino-functionalized, has a styrene content of 0.1 to 12 wt %, and has a glass transition temperature in the unvulcanized state according to DSC of −75 to −120° C., 5 to 95 phr of at least one further diene rubber, and 20 to 150 phr of at least one carbon black.

2 . The sulfur-crosslinkable rubber mixture as claimed in claim 1 , further comprising:
10 to 70 phr of the amino-functionalized styrene-butadiene rubber with a T g of −75 to 120° C., and from 10 to 70 phr of a solution-polymerized styrene-butadiene rubber with a glass transition temperature of −40 to +10° C.

3 . The sulfur-crosslinkable rubber mixture as claimed in claim 1 , wherein the glass transition temperature of the solution-polymerized amino-functionalized styrene-butadiene rubber in the unvulcanized state is −80 to −110° C.

4 . The sulfur-crosslinkable rubber mixture as claimed in claim 1 , wherein the solution-polymerized amino-functionalized styrene-butadiene rubber has a vinyl content of 7 to 12 wt %.

5 . The sulfur-crosslinkable rubber mixture as claimed in claim 1 , wherein the at least one carbon black has an iodine adsorption number according to ASTM D 1510 of 30 to 180 g/kg and a DBP number according to ASTM D 2414 of 80 to 200 ml/100 g.

6 . The sulfur-crosslinkable rubber mixture as claimed in claim 1 , wherein the rubber mixture is free from silica.

7 . A vehicle tire comprising the sulfur-crosslinkable rubber mixture as claimed in claim 1 in at least one component.

8 . The vehicle tire as claimed in claim 7 , wherein the component is a tread and/or a side wall.

9 . A method of manufacturing a vehicle tire comprising preparing the rubber mixture as claimed in claim 1 .

10 . A method of manufacturing a strap, belt, or hose comprising preparing the rubber mixture as claimed in claim 1 .

Assignees

• Continental Reifen Deutschland

Inventors

• Herzog Katharina
• Recker Carla
• Jungk Juliane

Classifications

• B60C11/0008

  characterised by the tread rubber · CPC title

• C08L9/00

  Compositions of homopolymers or copolymers of conjugated diene hydrocarbons · CPC title

• C08L2205/03

  containing three or more polymers in a blend · CPC title

• C08L2205/025

  containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title

• B29B7/7495

  for mixing rubber · CPC title