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1. (WO2009063819) PROPYLENE RESIN COMPOSITION FOR STRETCHED SHEET, AND STRETCHED SHEET AND THERMALLY MOLDED ARTICLE EACH COMPRISING THE COMPOSITION

Pub. No.:    WO/2009/063819    International Application No.:    PCT/JP2008/070392
Publication Date: May 22, 2009 International Filing Date: Nov 10, 2008
IPC: C08L 23/10
B32B 27/32
C08K 5/00
C08L 23/14
Applicants: PRIME POLYMER CO., LTD.
株式会社プライムポリマー
KIMURA, Takashi
木村 孝志
Inventors: KIMURA, Takashi
木村 孝志
Title: PROPYLENE RESIN COMPOSITION FOR STRETCHED SHEET, AND STRETCHED SHEET AND THERMALLY MOLDED ARTICLE EACH COMPRISING THE COMPOSITION
Abstract:
Disclosed are: a propylene resin composition for a stretched sheet having excellent stiffness, heat resistant stiffness, transparency, uniform stretchability and thermal moldability; and a stretched sheet and a thermally molded article, each of which comprises the resin composition. The propylene resin composition for a stretched sheet comprises 10 to 90 wt% of a high-melting-point propylene resin (A') having a melting point of 156 to 170˚C as measured by DSC and 10 to 90 wt% of at least one low-melting-point propylene resin (A'') having a melting point of 70 to 155˚C as measured by DSC (provided that the total amount of the components (A') and (A'') is defined as 100 wt%), and fulfils the following requirements [1] to [4]: [1] the propylene resin composition has a melt flow rate (230˚C, 2.16 kg load) of 0.5 to 10.0 g/10 min; [2] the propylene resin composition has a melting point of 150 to 170˚C as measured by DSC; [3] the propylene resin composition (A) contains an α-olefin comonomer at a content of 1 to 11 mol%; and [4] the propylene resin composition contains a nucleating agent.