Title:
熱膨張性ゴム組成物およびそのトレッドが該組成物を含む車両用タイヤ
Document Type and Number:
Japanese Patent JP6392212
Kind Code:
B2
Abstract:
Vehicle tyre, notably winter tyre, the tread of which contains a rubber composition that is thermally expandable in the non-vulcanized state, expanded in the vulcanized state; in the non-vulcanized state, said composition contains a diene elastomer such as natural rubber and/or a polybutadiene, more than 50 phr of a reinforcing filler such as silica and/or carbon black, between 5 and 25 phr of microparticles of a sodium or potassium (hydrogen) carbonate having a median particle size by weight of between 1 and 50 µm, between 2 and 20 phr of a carboxylic acid the melting point of which is between 60°C and 220°C, such as citric acid or stearic acid for example, the total (hydrogen) carbonate and carboxylic acid content being higher than 10 phr, preferably higher than 15 phr. The combined use of the latter two compounds, at the recommended high contents, allows a great improvement to the grip of the tyre on melting ice without penalizing the rate at which this thermally expandable rubber composition is cured.
Inventors:
Ochiai Chika
Pagano Salvatore
Pagano Salvatore
Application Number:
JP2015517720A
Publication Date:
September 19, 2018
Filing Date:
June 18, 2013
Export Citation:
Assignee:
Company Generale De Ettablissman Michelin
International Classes:
C08L9/00; B60C1/00; C08J9/08; C08K3/013; C08K3/26; C08K5/09; C08L7/00
Domestic Patent References:
| JP9296063A | ||||
| JP2004091745A | ||||
| JP2008169350A | ||||
| JP2013512289A | ||||
| JP2014520174A |
Foreign References:
| WO2011132461A1 | ||||
| US20070219320 |
Attorney, Agent or Firm:
Wada Kodai