基本信息:
- 专利标题： PROPYLENE RESIN FOAMED PARTICLE AND FOAMED PARTICLE MOLDED BODY
- 专利标题（中）：丙烯树脂泡沫颗粒和泡沫颗粒模塑体
- 申请号：EP16824474.7 申请日：2016-07-13
- 公开(公告)号：EP3309197A1 公开(公告)日：2018-04-18
- 发明人： KITAHARA, Taizo , ONO, Michitoshi , TSURUGAI, Kazuo
- 申请人： JSP Corporation
- 申请人地址： 4-2 Marunouchi 3-chome Chiyoda-ku, Tokyo 100-0005 JP
- 专利权人： JSP Corporation
- 当前专利权人： JSP Corporation
- 当前专利权人地址： 4-2 Marunouchi 3-chome Chiyoda-ku, Tokyo 100-0005 JP
- 代理机构： Gille Hrabal
- 优先权： JP2015141333 20150715
- 国际公布： WO2017010494 20170119
- 主分类号： C08J9/18
- IPC分类号： C08J9/18
摘要：
The present invention is concerned with expanded propylene resin beads including a core layer being in a foamed state, having a tubular shape, and being constituted of a propylene-based resin composition (a) satisfying the following (i) and (ii) and a cover layer being constituted of an olefin-based resin (b) satisfying the following (iii) or (iv).
(i) A mixture of 75% by weight to 98% by weight of a propylene-based resin (a1) having a melting point of 100°C to 140°C and 25% by weight to 2% by weight of a propylene-based resin (a2) having a melting point of 140°C to 165°C.
(ii) A difference between the melting point of the resin (a2) and the melting point of the resin (a1) is 15°C or more.
(iii) A crystalline olefin-based resin having a melting point TmB that is lower than a melting point TmA of the composition (a) and having a relation of 0°C
(iv) A non-crystalline olefin-based resin having a softening point TsB that is lower than TmA and having a relation of 0°C
摘要（中）：
(i) A mixture of 75% by weight to 98% by weight of a propylene-based resin (a1) having a melting point of 100°C to 140°C and 25% by weight to 2% by weight of a propylene-based resin (a2) having a melting point of 140°C to 165°C.
(ii) A difference between the melting point of the resin (a2) and the melting point of the resin (a1) is 15°C or more.
(iii) A crystalline olefin-based resin having a melting point TmB that is lower than a melting point TmA of the composition (a) and having a relation of 0°C
(iv) A non-crystalline olefin-based resin having a softening point TsB that is lower than TmA and having a relation of 0°C
本发明涉及一种发泡丙烯类树脂珠，该发泡丙烯类树脂珠包含发泡状的芯层，该芯层呈管状，并且由满足以下（i）和（ii）的丙烯类树脂组合物（a）和 覆盖层由满足以下（iii）或（iv）的烯烃类树脂（b）构成。 （i）将75重量％〜98重量％的熔点为100℃〜140℃的丙烯系树脂（a1）和25重量％〜2重量％的丙烯系树脂 （a2），熔点为140℃〜165℃。 （ii）树脂（a2）的熔点与树脂（a1）的熔点之差为15℃以上。 （iii）熔点TmB低于组合物（a）的熔点TmA且具有0℃<[TmA-TmB]≤80℃的关系的结晶烯烃基树脂。 （iv）软化点TsB低于TmA且具有0℃<[TmA-TsB]≤100℃的关系的非晶性烯烃类树脂。