发明名称 |
Polypropylene-Based Resin Expanded Beads, Method for Preparing Same, and Polypropylene-Based Resin Expanded Beads Molded Article |
摘要 |
An electrostatic dissipative, polypropylene-based resin expanded bead containing electrically conductive carbon black, having an apparent density of 10 to 120 kg/m3 and formed of a base resin which includes a polypropylene resin forming a continuous phase, and a polyethylene resin forming dispersed phases dispersed in the continuous phase, with the carbon black being unevenly distributed to the dispersed phases side. The polyethylene resin is an ethylene homopolymer or a copolymer of ethylene and C4 to C6 α-olefin and a weight ratio of the polypropylene resin to the polyethylene resin is 99.5:0.5 to 65:35. A molded article obtained by in-mold molding of such expanded beads exhibits electrostatic dissipative properties with a surface resistivity in the range of 1×105 to 1×1010Ω in a stable manner. |
申请公布号 |
US2015001451(A1) |
申请公布日期 |
2015.01.01 |
申请号 |
US201214365406 |
申请日期 |
2012.12.06 |
申请人 |
JSP CORPORATION |
发明人 |
Chiba Takuya;Oikawa Masaharu;Shinohara Mitsuru |
分类号 |
H01B1/24;B29C44/00;B29B7/00 |
主分类号 |
H01B1/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
Tokyo JP |