发明名称 |
SEALING MATERIAL |
摘要 |
Provided is a sealing material having low hardness, low density, and excellent sealing properties. A sealing material, made by vulcanizing and foaming a blend containing: a thermoplastic resin; a foaming agent; a vulcanizing agent; and a rubber component containing a rubber copolymer of ethylene, a non-conjugate diene, and an α-olefin with 3 or more carbon atoms; wherein the blend contains 2 to 4 mass parts of stearic acid and 5 to 7 mass parts of CaO in 100 mass parts of the rubber component, and the 50% compressive stress of the sealing material is 100 kPa or less. |
申请公布号 |
US2015094390(A1) |
申请公布日期 |
2015.04.02 |
申请号 |
US201314394549 |
申请日期 |
2013.04.25 |
申请人 |
BRIDGESTONE CORPORATION |
发明人 |
Otsuka Masaru;Seki Katsuya;Yamamoto Tomohiro;Itoyama Tsuyoshi |
分类号 |
C09K3/10 |
主分类号 |
C09K3/10 |
代理机构 |
|
代理人 |
|
主权项 |
1. A sealing material obtained by vulcanizing and expanding an intimate mixture comprising a rubber component containing a copolymeric rubber of ethylene, an α-olefin having 3 or more carbon atoms and a non-conjugated diene, a vulcanizing agent, a foaming agent and a thermoplastic resin, characterized in that
the intimate mixture includes from 2 to 4 parts by weight of stearic acid and from 5 to 7 parts by weight of calcium oxide per 100 parts by weight of the rubber component, and the sealing material has a stress under 50% compression of 100 kPa or less. |
地址 |
Chuo-ku, Tokyo JP |