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:
Dec. 04, 2012
Filed:
Nov. 16, 2007
Masaaki Ito, Yokkaichi, JP;
Hideshi Uchino, Yokkaichi, JP;
Kazuya Sakata, Yokkaichi, JP;
Masaru Aoki, Yokkaichi, JP;
Masato Nakano, Yokkaichi, JP;
Shinichi Kitade, Yokkaichi, JP;
Masaaki Ito, Yokkaichi, JP;
Hideshi Uchino, Yokkaichi, JP;
Kazuya Sakata, Yokkaichi, JP;
Masaru Aoki, Yokkaichi, JP;
Masato Nakano, Yokkaichi, JP;
Shinichi Kitade, Yokkaichi, JP;
Japan Polypropylene Corporation, Tokyo, JP;
Abstract
A propylene-based polymer comprising the following component (A) insoluble in p-xylene at 25° C. and component (B) soluble in p-xylene at 25° C., wherein (i) the weight average molecular weight (Mw) measured with GPC is 100,000 to 1,000,000, (ii) the content of the component insoluble in hot p-xylene is 0.3% by weight or lower, and (iii) the degree of strain hardening (λ max) in measurement of elongational viscosity is 2.0 or higher; and a method for producing the same, along with a resin composition comprising a propylene-ethylene copolymer (Z) in an amount of 50.0 to 99.9% by weight and a propylene-based polymer (M) in an amount of 0.1 to 50.0% by weight. Component (A): a component (CXIS) insoluble in p-xylene at 25° C., having requirements specified by (A1) to (A5). Component (B): a component (CXS) is soluble in p-xylene at 25° C., having requirements specified by (B1) to (B4).