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:
Nov. 07, 1989
Filed:
Jun. 12, 1987
Applicant:
Inventors:
Akira Sano, Kawasaki, JP;
Seizo Kobayashi, Yokohama, JP;
Kazuo Matsuura, Tokyo, JP;
Shigeki Yokoyama, Yokohama, JP;
Takeshi Kamiya, Kamakura, JP;
Assignee:
Nippon Oil Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29B / ;
U.S. Cl.
CPC ...
264 28 ; 264120 ; 264122 ; 264126 ; 264171 ; 2642102 ; 2642107 ; 2642108 ; 264211 ; 264236 ; 264300 ; 264320 ; 26433117 ; 525240 ; 525 73 ; 5253481 ; 525352 ;
Abstract
A process for producing polyethylene materials is disclosed in which particulate polyethylene is drawn at lower temperatures than its melting point, the polymer having an intrinsic viscosity of 5-50 dl/g at 135.degree. C. in decalin and resulting from the polymerization of ethylene at temperatures below the above melting point and with use of a selected catalyst. The polyethylene materials excel in mechanical strength and elastic modulus.