Title:
RUBBER COMPOSITION FOR RUBBER BEARING BODY SIDE WALLS, AND RUBBER BEARING BODY USING SAME
Document Type and Number:
WIPO Patent Application WO/2023/276994
Kind Code:
A1
Abstract:
The present invention provides: a rubber composition for rubber bearing body side walls, the rubber composition exhibiting high adhesion to a rubber bearing body, while exhibiting excellent performance in terms of low temperature properties, durability and weather resistance; and a rubber bearing body which uses this rubber composition for rubber bearing body side walls. The above are achieved by means of a rubber bearing body that is obtained by alternately stacking rubber layers 2 and hard plates 1 and arranging a lateral surface material 5, which is formed of a covering rubber, so as to surround the outer lateral surface of the rubber bearing body, wherein the lateral surface material 5 is formed of a crosslinked product of a rubber composition for rubber bearing body side walls, the rubber composition containing polymer components (A)-(C) described below. (A) A diene rubber that is mainly composed of at least one of a natural rubber and an isoprene rubber, provided that this diene rubber excludes an ethylene-propylene-diene ternary copolymer and a liquid rubber. (B) An ethylene-propylene-diene ternary copolymer that has a diene content of 10% by mass or more and an ethylene content of 55% by mass or less. (C) A liquid rubber that has a molecular weight of 1,000 to 60,000.
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Inventors:
MURATANI KEIICHI (JP)
Application Number:
PCT/JP2022/025684
Publication Date:
January 05, 2023
Filing Date:
June 28, 2022
Export Citation:
Assignee:
SUMITOMO RIKO CO LTD (JP)
International Classes:
C08L9/00; C08L21/00; C08L23/16; E01D19/04; F16F15/04
Foreign References:
| JP2009001603A | 2009-01-08 | |||
| JP2012211277A | 2012-11-01 | |||
| JP2013035943A | 2013-02-21 | |||
| JP2017137414A | 2017-08-10 |
Attorney, Agent or Firm:
SAITOH Yukihiko et al. (JP)
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