POLYPROPYLENE-BASED COMPOSITE RESIN COMPOSITION

WIPO Patent Application WO/2003/066730

A1

A polypropylene-based composite resin composition in which: (1) the complex viscosity &eegr * as measured at 190°C and an angular frequency (&ohgr ) of 0.1 rad/s is 2,000 Pa·s or higher; (2) the storage moduli in shear G'₁₀₀, G'₁₀, G'_0.1, and G'_0.01 as measured at 90°C and angular frequencies of 100, 10, 0.1, and 0.01 rad/s respectively satisfy the following relationships (I) and (II); log(G'₁₀₀)-log(G'₁₀)≥0.6 (I) log(G'_0.1)-log(G'_0.01)≤0.4 (II) and (3) the storage modulus in shear G'_0.0251 as measured at 190°C and an angular frequency of 0.0251 rad/s is 60 Pa or higher. Even when injection-molded at a shortened molding cycle time, the composition is less apt to cause failures such as short shot, burrs, surface adhesion failures, deformation, and legginess.

WO/2008/134186	THERMOFORMING, SCRATCH-RESISTANT, LOW GLOSS COMPOSITIONS COMPRISING INTERPOLYMERS OF ETHYLENE/α-OLEFINS
WO/2007/093376	POLYPROPYLENE COMPOSITIONS
WO/2009/106411	POLYOLEFIN COMPOSITIONS

NAKAGAWA MASARU (JP)
HIRANO KOKI (JP)
ISOGAI OSAMU (JP)
SHIMAZAKI TOSHIFUMI (JP)

PCT/JP2003/001059

August 14, 2003

February 03, 2003

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IDEMITSU PETROCHEMICAL CO (JP)
NAKAGAWA MASARU (JP)
HIRANO KOKI (JP)
ISOGAI OSAMU (JP)
SHIMAZAKI TOSHIFUMI (JP)

C08F297/08; C08K3/34; C08K5/00; C08L23/10; C08L23/14; C08L53/00; C08L53/02; C08K3/36; C08L23/08; (IPC1-7): C08L53/00

JP2001072828A	2001-03-21
JP2001002841A	2001-01-09
JP2000248147A	2000-09-12
JPH09328598A	1997-12-22
JPH09263665A	1997-10-07
JPH09328526A	1997-12-22

Ohtani, Tamotsu (25-2 Toranomon 3-chom, Minato-ku Tokyo, JP)

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