Title:
POLYPROPYLENE RESIN FOAM PARTICLES, METHOD FOR PRODUCING SAME, AND POLYPROPYLENE RESIN FOAM PARTICLE MOLDED BODY
Document Type and Number:
WIPO Patent Application WO/2022/259726
Kind Code:
A1
Abstract:
Each one of polypropylene resin foam particles (1) according to the present invention comprises a core layer (2) and a coating layer (3) that covers the core layer (2). A base material resin (II) of the coating layer (3) is a composition (X) that is composed of a polypropylene resin (B) which has a melting point of 125°C to 150°C, carbon nanotubes (C), and a polypropylene resin (D) which has a melting point of 70°C to 100°C. The added amount of the carbon nanotubes (C) and the added amount of the polypropylene resin (D) relative to 100 parts by mass of the polypropylene resin (B) is 3 to 20 parts by mass and 6 to 120 parts by mass, respectively. The mass ratio (D)/(C) of the added amount of the polypropylene resin (D) to the added amount of the carbon nanotubes (C) is 2 to 10.
Inventors:
KITAHARA TAIZO (JP)
CHIBA TAKUYA (JP)
CHIBA TAKUYA (JP)
Application Number:
PCT/JP2022/015677
Publication Date:
December 15, 2022
Filing Date:
March 29, 2022
Export Citation:
Assignee:
JSP CORP (JP)
International Classes:
B29C44/00; B29C44/44; C08J9/16; B29K23/00; B29K105/04
Domestic Patent References:
| WO2016199693A1 | 2016-12-15 | |||
| WO2013132957A1 | 2013-09-12 |
Foreign References:
| CN112341662A | 2021-02-09 | |||
| CN106336522A | 2017-01-18 | |||
| JP2020105337A | 2020-07-09 | |||
| JP2014077045A | 2014-05-01 | |||
| JP2006232939A | 2006-09-07 | |||
| JP2015113403A | 2015-06-22 | |||
| JP2009173021A | 2009-08-06 |
Attorney, Agent or Firm:
AICHI, TAKAHASHI, IWAKURA & ASSOCIATES (JP)
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