COLD-RESISTANT RUBBER COMPOSITION

WIPO Patent Application WO/2015/060466

A1

Provided is a rubber composition that is suitable for use in an air suspension for vehicles used in cold climates, said rubber composition exhibiting superior ozone resistance (as demonstrated by a dynamic ozone strain test) and cold resistance. Specifically provided is a cold-resistant rubber composition that includes a butadiene rubber, a chloroprene rubber, and a natural rubber or a rubber obtained by partially substituting a natural rubber with at least one specific rubber selected from the group consisting of styrene-butadiene rubbers and nitrile rubbers, wherein, with respect to a total of 100 parts by mass of the rubbers, the content of the butadiene rubber is 10-35 parts by mass, the content of the chloroprene rubber is 50-75 parts by mass, and the content of the natural rubber or the total content of the natural rubber and the specific rubber(s) is 10-35 parts by mass, and in cases when the specific rubber is present, the content of the specific rubber is preferably 10-60 mass% of the total content of the natural rubber and the specific rubber. Also provided is an air suspension for railway vehicles which uses the cold-resistant resin composition.　

MAEDA SHUHEI (JP)
SUGAWARA JUN (JP)
HARAGUCHI HIROKAZU (JP)
YOSHIDA JUN (JP)

PCT/JP2014/083552

April 30, 2015

December 18, 2014

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SUMITOMO ELECTRIC INDUSTRIES (JP)

C08L11/00; C08L7/00; C08L9/00; F16F1/36; F16F9/04

JP2010013504A	2010-01-21
JP2013155248A	2013-08-15
JP2013249409A	2013-12-12
JP2012111899A	2012-06-14

NAKATA, Motomi et al. (JP)
Nakada Motoki (JP)

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