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:
Oct. 03, 1989
Filed:
Nov. 19, 1987
Applicant:
Inventors:
Assignee:
Chisso Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ; C08L / ; C08L / ;
U.S. Cl.
CPC ...
525 98 ;
Abstract
A polypropylene composition capable of producing molded products having superior stiffness, impact resistance, transparency, resistance to whitening on impact on bending and luster is provided, which composition has (i) a styrene-ethylene.multidot.butylene-styrene block copolymer or a styrene-ethylene.multidot.propylene block copolymer each in 5 to 30% by weight based on the weight of the composition, blended with a highly crystalline propylene homopolymer (A) having a relationship between its isotactic pentad ratio (P) and melt flow rate (MFR) represented by an expression of