摘要 |
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.
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申请人 |
MITSUI PETROCHEMICAL INDUSTRIES, LTD. |
发明人 |
KIOKA, MAMORU, C/O MITSUI PETROCHEMICAL IND., LTD.;UEDA, TAKASHI, C/O MITSUI PETROCHEMICAL IND., LTD.;YAMADA, MASAYA, C/O MITSUI PETROCHEMICAL IND. LTD.;KOHYAMA, MASAKI, C/O MITSUI PETROCHEM. IND., LTD.;IKEYAMA, SEIICHI, C/O MITSUI PETROCHEM. IND., LTD.;AKANA, YOSHINORI, C/O MITSUI PETROCHEM. IND., LTD.;IWATA, KENJI, C/O MITSUI PETROCHEMICAL 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. |