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. 28, 1994
Filed:
Feb. 27, 1991
Mamoru Kioka, Kuga, JP;
Takashi Ueda, Kuga, JP;
Masaya Yamada, Ichihara, JP;
Masaki Kohyama, Ichihara, JP;
Seiichi Ikeyama, Kuga, JP;
Yoshinori Akana, Kuga, JP;
Kenji Iwata, Kuga, JP;
Hiroshi Nishikawa, Kuga, JP;
Kazumitsu Kawakita, Kuga, JP;
Hideki Sakai, Kuga, JP;
Mitsui Petrochemical Industries, Ltd., Tokyo, JP;
Abstract
The present invention relates to a novel ethylene/pentene-1 copolymer whose molded film has a good balance between impact resistance and tear properties and high transparency, also is prominently reduced in a variation of the transparency even after subjected to a heat treatment, and further shows high blocking resistance, provided that the copolymer fulfills specific requisites. The invention also relates to a process for the preparation of the above-mentioned ethylene/pentene-1 copolymer and a formulation of the ethylene/pentene-1 copolymer composition using a stabilizer. According to the invention, there can be obtained an ethylene/pentene-1 copolymer composition which is excellent in heat stability in the molding stage, long-term heat stability and weatherability.