Title:
POLYPROPYLENE RESIN COMPOSITION FOR INJECTION MOLDING, AND MOLDED ARTICLE
Document Type and Number:
Japanese Patent JP2015209497
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a polypropylene resin composition for injection molding, which is capable of preventing generation of black spots during injection molding and is excellent in recyclability.SOLUTION: The polypropylene resin composition for injection molding of the present invention contains a block polypropylene (A), a phenol-phosphorus-based antioxidant (B), and at least one of a phenolic antioxidant (C) and a phosphorus-based antioxidant (D). The content of the phenol-phosphorus-based antioxidant (B) is 0.05-0.5 pt.mass based on 100 pts.mass of the block polypropylene (A). The total content of the phenol-phosphorus-based antioxidant (B), the phenolic antioxidant (C), and the phosphorus-based antioxidant (D) is 0.12-1.5 pts.mass based on 100 pts.mass of the block polypropylene (A).
Inventors:
YAMAMOTO KUNIO
SUGANO YOSOSHI
TSUKAHARA TAKESHI
NAKAJIMA TAKESHI
SUGANO YOSOSHI
TSUKAHARA TAKESHI
NAKAJIMA TAKESHI
Application Number:
JP2014091960A
Publication Date:
November 24, 2015
Filing Date:
April 25, 2014
Export Citation:
Assignee:
SUNALLOMER LTD
International Classes:
C08L23/10; C08K5/13; C08K5/524; C08K5/526; C08L53/00
Domestic Patent References:
| JP2008260929A | 2008-10-30 | |||
| JP2012107136A | 2012-06-07 | |||
| JP2010150417A | 2010-07-08 | |||
| JP2011026558A | 2011-02-10 | |||
| JP2009263656A | 2009-11-12 | |||
| JP2013100444A | 2013-05-23 |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Yasuhiko Murayama
Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Yasuhiko Murayama
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