Ethylenepentene-1 copolymer, process for the prep

专利名称：Ethylene/pentene-1 copolymer, process for

the preparation of the same, and

ethylene/pentene-1 copolymer composition

发明人：Kioka, Mamoru, c/o Mitsui Petrochemical

Ind., Ltd.,Ueda, Takashi, c/o Mitsui

Petrochemical Ind., Ltd.,Yamada, Masaya, c/oMitsui Petrochemical Ind. Ltd.,Kohyama,Masaki, c/o Mitsui Petrochem. Ind.,Ltd.,Ikeyama, Seiichi, c/o Mitsui Petrochem.Ind., Ltd.,Akana, Yoshinori, c/o MitsuiPetrochem. Ind., Ltd.,Iwata, Kenji, c/o MitsuiPetrochemical Ind., Ltd.,Nishikawa, Hiroshi,c/o Mitsui Petroch. Ind., Ltd.,Kawakita,Kazumitsu, c/o Mitsui Petroch. Ind. Ltd.,Sakai,Hideki, c/o Mitsui Petrochemical Ind., Ltd.

申请号：EP91102818.1申请日：19910226公开号：EP0444606A1公开日：19910904

摘要：The present invention relates to a novel ethylene/pentene-1 copolymer whosemolded film has a good balance between impact resistance and tear properties and hightransparency, also is prominently reduced in a variation of the transparency even aftersubjected 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 thepreparation of the above-mentioned ethylene/pentene-1 copolymer and a formulationof the ethylene/pentene-1 copolymer composition using a stabilizer. According to theinvention, there can be obtained an ethylene/pentene-1 copolymer composition which isexcellent in heat stability in the molding stage, long-term heat stability andweatherability.

申请人：MITSUI PETROCHEMICAL INDUSTRIES, LTD.

地址：2-5, Kasumigaseki 3-chome Chiyoda-ku Tokyo 100 JP

国籍：JP

代理机构：Hansen, Bernd, Dr. Dipl.-Chem.

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