RUBBER COMPOSITION FOR HOSE INNER TUBES, LAMINATE, AND HOSE

WIPO Patent Application WO/2022/113671

A1

The purpose of the present invention is to provide a rubber composition which is for hose inner tubes and which is capable of achieving excellent productivity and inner tube detachment resistance, even when a cobalt compound is not contained or is contained in a small amount.　In order to solve said problem, the rubber composition for hose inner tubes according to the present invention is characterized by containing, with respect to 100 parts by mass of a rubber component, A) 20 parts by mass or less of a butadiene rubber, B) 80 parts by mass or more of an acrylonitrile butadiene rubber, C) less than 10 parts by mass of silica, and D) 3.0 parts by mass or less of a non-thiazole-based vulcanization accelerator as essential components, and containing a cobalt compound as an optional component. The present invention is characterized in that the contained amount of the cobalt compound is 0.1 mass% or less in terms of the cobalt content, with respect to the total amount of the rubber composition for hose inner tubes, and in that a thiazole-based vulcanization accelerator is not contained.

UEMURA TAKUYA (JP)
KONTANI KATSUNORI (JP)

PCT/JP2021/040445

June 02, 2022

November 02, 2021

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BRIDGESTONE CORP (JP)

C08L9/02; B32B1/08; B32B25/10; B32B25/16; B32B27/00; B32B27/18; B32B27/20; C08K3/013; C08K3/04; C08K3/36; C08K5/3415; C08K5/44; C08L9/00; F16L11/04; F16L11/08

WO2014136668A1	2014-09-12
WO2020074751A1	2020-04-16

JP2017019984A	2017-01-26
JP2002361627A	2002-12-18
JP2004250696A	2004-09-09
JP2012102288A	2012-05-31
JP2007291295A	2007-11-08
JP2017002175A	2017-01-05
JP2008168522A	2008-07-24
JP2003160695A	2003-06-03

SUGIMURA Kenji (JP)

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