Global Patent Index - EP 1263615 A1

EP 1263615 A1 2002-12-11 - INCORPORATING HIGH LEVELS OF MAGNETIC PARTICULATE INTO THE RUBBER MATRIX OF RUBBER COMPOUNDS

Title (en)

INCORPORATING HIGH LEVELS OF MAGNETIC PARTICULATE INTO THE RUBBER MATRIX OF RUBBER COMPOUNDS

Title (de)

ZUGABE HOHER MENGEN VON MAGNETTEILCHEN ZU KAUTSCHUKZUSAMMENSETZUNGEN

Title (fr)

INCORPORATION DE QUANTITES IMPORTANTES DE PARTICULES MAGNETIQUES DANS LA MATRICE DE COMPOSES DU CAOUTCHOUC

Publication

EP 1263615 A1 (EN)

Application

EP 01910801 A

Priority

  • US 0104991 W
  • US 18356100 P
  • US 50633200 A
  • US 78580101 A

Abstract (en)

[origin: WO0160639A1] A composition useful for magnetic filled tires, particularly for tire sidewalls, which contains an organoxysilylsulfane coupling agent, is provided. The composition displays either improved fatigue resistance or either improved crack growth resistance or both. The sidewall composition is magnetizable to a magnetic field strength of preferably at least 0.1 Gauss, more preferably at least 0.5 Gauss, even more preferably at least 1 Gauss, even more preferably at least 10 Gauss, most preferably at least 25 Gauss, as measured at a distance of 8 mm for a 1 mm thick layer. The sidewall composition comprises 100 parts rubber, magnetic particulate, organosilane and curing agents. The compositions contain: curing agents in an amount effective to cure the rubber; such as sulfur preferably from 30 to 350 phr, more preferably from 40 to 300 phr, most preferably from 50 to 250 phr magnetic particulate; and preferably from 0.5 phr to 30 phr, more preferably from 1 to phr to 20 phr, most preferably from 2 to 10 phr organoxysilylsulfane. The present invention also relates to methods of making tires, and to the tire itself.

IPC 1-7 (main, further and additional classification)

B60C 1/00; C08K 3/00; C08K 5/548; C08L 21/00

IPC 8 full level (invention and additional information)

B60C 1/00 (2006.01); C08J 3/20 (2006.01); C08J 3/22 (2006.01); C08K 3/00 (2006.01); C08K 3/08 (2006.01); C08K 3/22 (2006.01); C08K 5/548 (2006.01); C08L 7/00 (2006.01); C08L 9/00 (2006.01); C08L 101/00 (2006.01)

CPC (invention and additional information)

C08K 3/22 (2013.01); B60C 1/0025 (2013.01); C08K 3/013 (2018.01); C08K 3/08 (2013.01); C08K 5/548 (2013.01); B60C 2019/005 (2013.01); C08K 2201/01 (2013.01)

Combination set (CPC)

  1. C08K 3/08 + C08L 21/00
  2. C08K 3/22 + C08L 21/00
  3. C08K 5/548 + C08L 21/00
  4. C08K 3/013 + C08L 21/00

Citation (search report)

See references of WO 0160639A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

WO 0160639 A1 20010823; EP 1263615 A1 20021211; JP 2003534397 A 20031118; MX PA02007968 A 20050323

INPADOC legal status


2004-05-19 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20031111

2003-08-13 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030630

2002-12-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020904

2002-12-11 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR