发明名称 |
HEAT-EXPANDABLE RUBBER COMPOSITION FOR TYRE ABLE TO REDUCE TRAVEL NOISE |
摘要 |
A heat-expandable rubber composition includes, in a non-vulcanized state, from 50 to 100 phr of a copolymer based on styrene and butadiene; optionally from 0 to 50 phr of another diene elastomer, such as a polybutadiene or natural rubber; more than 50 phr of a reinforcing filler, such as silica and/or carbon black; between 5 and 25 phr of microparticles of sodium or potassium (hydrogen)carbonate having a median size between 1 and 50 um; and between 2 and 15 phr of a carboxylic acid have a melting point between 60° C. and 220° C., such as citric acid. The composition is useable in a tyre of a vehicle. When the (hydrogen)carbonate and the carboxylic acid are present in the composition at a total content greater than 10 phr, it is possible to significantly reduce tyre noise during running of the vehicle, without adversely affecting a curing rate of the composition. |
申请公布号 |
EP2877530(B1) |
申请公布日期 |
2016.09.14 |
申请号 |
EP20130734799 |
申请日期 |
2013.07.10 |
申请人 |
COMPAGNIE GÉNÉRALE DES ETABLISSEMENTS MICHELIN;MICHELIN RECHERCHE ET TECHNIQUE S.A. |
发明人 |
SHIRAISHI, YU;PAGANO, SALVATORE;CUSCITO, OLIVIA;PIALOT, FRÉDÉRIC |
分类号 |
C08L9/06;B60C1/00;C08K3/36 |
主分类号 |
C08L9/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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