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:
Jun. 06, 1995
Filed:
Aug. 03, 1994
Applicant:
Inventors:
Sakae Kamiyama, Ichihara, JP;
Masao Kawahara, Ichihara, JP;
Kunihiro Inamatsu, Ichihara, JP;
Keizo Kase, Ichihara, JP;
Kouji Mizokami, Ichihara, JP;
Tsuyoshi Matsumoto, Ichihara, JP;
Assignee:
Maruzen Polymer Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ;
U.S. Cl.
CPC ...
525240 ; 525247 ; 525270 ; 525324 ; 526116 ;
Abstract
The invention relates to a method for producing an ethylenic polymer composition, suitable for molding, at high catalytic efficiency. The ethylenic polymer composition produced has as a high melt tension when melted, and a high melt modulus (die swell ratio). The process comprises a three step polymerization of an olefin employing a transition metal catalyst, the catalyst being produced in a specific manner.