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:
Mar. 02, 2004
Filed:
Mar. 18, 2002
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A polypropylene-based resin composition for stretched film, comprising 20 to 98 parts by weight of a propylene-based polymer(A) having an intrinsic viscosity [&eegr;] of 1.8 to 8 dl/g and a melting temperature Tm of 140 to 165 ° C. and 2 to 80 parts by weight of a propylene-based polymer(B) having an intrinsic viscosity [&eegr;] of 0.8 to 1.7 dl/g and a melting temperature Tm of 150 to 170° C., wherein the ratio of Tm to Tm is less than 1, the ratio of the intrinsic viscosity [&eegr;] to the intrinsic viscosity [&eegr;] is more than 1 and less than 10, and the melt flow rate of the polypropylene-based resin composition is from 0.1 to 20 g/10 min.