The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 1999
Filed:
Nov. 28, 1997
Applicant:
Inventors:
Jun Saito, Kimitsi, JP;
Naoshi Kawamoto, Kanazawa, JP;
Akiko Kageyama, Ichikawa, JP;
Kouichi Hatada, Ichihara, JP;
Yoshiyuki Oogi, Chiba, JP;
Tsutomu Ushioda, Ichihara, JP;
Assignee:
Chisso Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
525240 ; 525322 ; 525 88 ; 525323 ; 525 95 ; 526943 ;
Abstract
A polypropylene composition comprising 20 to 95% by weight of a stereoregular polypropylene characterized by the specified physical properties determined from .sup.13 C NMR spectra and 5 to 80% by weight of an .alpha.-olefin copolymer comprising 10 to 90% by weight of an .alpha.-olefin and 10 to 90% by weight of at least one of other .alpha.-olefins. The polypropylene composition demonstrates good balance of rigidity and impact resistance, high heat resistance and high toughness, when used as molding materials.