Title:
CROSSLINKED EXPANDED BEADS AND MOLDED EXPANDED-BEAD OBJECT
Document Type and Number:
WIPO Patent Application WO/2016/181714
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: expanded beads which have excellent in-mold moldability and are capable of producing a molded expanded-bead object that has an excellent balance among lightweight property, flexibility, resilience, recovery, and tensile property; and a molded expanded-bead object obtained from the expanded beads. The present invention is crosslinked expanded beads obtained by crosslinking and expanding particles of a multi-block copolymer comprising a polyethylene block and an ethylene/α-olefin copolymer block, wherein the multi-block copolymer has a melt flow rate, as measured at 190°C and a load of 2.16 kg, of 2-10 g/10 min and a Shore A hardness, as measured in accordance with ASTM D2240, of 65-90, the crosslinked expanded beads having a gel content, as determined by a hot-xylene extraction method, of 30-60%. The molded expanded-bead object according to the present invention is obtained by subjecting the crosslinked expanded beads according to the present invention to in-mold molding. The molded expanded-bead object according to the present invention has an apparent density of 40-150 g/L.
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Inventors:
TAKAGI SHOTA (JP)
OIKAWA MASAHARU (JP)
OIKAWA MASAHARU (JP)
Application Number:
PCT/JP2016/059961
Publication Date:
November 17, 2016
Filing Date:
March 28, 2016
Export Citation:
Assignee:
JSP CORP (JP)
International Classes:
C08J9/16; C08J9/22
Foreign References:
| JP2011184574A | 2011-09-22 | |||
| JPS51124157A | 1976-10-29 | |||
| JPH059329A | 1993-01-19 | |||
| JP2008533289A | 2008-08-21 |
Other References:
See also references of EP 3296350A4
Attorney, Agent or Firm:
HIRASAWA, Kenichi et al. (JP)
Ken-ichi Hirasawa (JP)
Ken-ichi Hirasawa (JP)
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