Title:
POLYPROPYLENE RESIN COMPOSITION FOR SHEET MOLDING
Document Type and Number:
WIPO Patent Application WO/2013/125504
Kind Code:
A1
Abstract:
To efficiently provide a sheet-like molded article which has excellent transparency, high rigidity and sufficient impact resistance, while being stable with respect to shape.
A polypropylene resin composition for sheets, which contains: 99.95-99.5% by weight of a polypropylene copolymer that is obtained by copolymerizing propylene and ethylene using a catalyst that contains (A) a solid catalyst which contains, as an essential component, an electron-donating compound that is selected from among magnesium, titanium, halogens and succinates; (B) an organic aluminum compound; and (C) an external electron-donating compound which is selected from among silicon compounds; and 0.05-0.5% by weight of a crystal nucleator. The polypropylene resin composition for sheets is characterized in that: the polypropylene copolymer has a polydispersity of 4.5-10; the polypropylene copolymer has an ethylene content of 0.3-2.0% by weight based on the weight of the polypropylene copolymer; and the composition has a melt flow rate at 230°C of 1-8 g/10 minutes.
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Inventors:
NAKAJIMA TAKESHI (JP)
SAKAI KAZUHIKO (JP)
KURIYAMA MINORU (JP)
MARUYAMA MASANORI (JP)
SAKAI KAZUHIKO (JP)
KURIYAMA MINORU (JP)
MARUYAMA MASANORI (JP)
Application Number:
PCT/JP2013/053927
Publication Date:
August 29, 2013
Filing Date:
February 19, 2013
Export Citation:
Assignee:
SUNALLOMER LTD (JP)
International Classes:
C08L23/16; C08F4/654; C08F210/16
Domestic Patent References:
| WO2011071237A2 | 2011-06-16 | |||
| WO1995031490A1 | 1995-11-23 |
Foreign References:
| JP2005534761A | 2005-11-17 | |||
| JP2002284942A | 2002-10-03 | |||
| JP2006199738A | 2006-08-03 | |||
| JP2002542347A | 2002-12-10 | |||
| JP2009504822A | 2009-02-05 |
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
Ono Shinjiro (JP)
Ono Shinjiro (JP)
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Claims: