Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1991-02-27
1994-03-01
Teskin, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526125, 526142, 526348, 524 99, 524128, 524186, 524323, 524394, 524400, 524419, 524579, C08F21014
Patent
active
052908968
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.
REFERENCES:
patent: B632416 (1976-03-01), Anderson et al.
patent: 4330639 (1982-05-01), Matsuura et al.
patent: 4461873 (1984-07-01), Bailey et al.
patent: 4547551 (1985-10-01), Bailey et al.
patent: 4822855 (1989-04-01), Kobayashi et al.
Koptev, Chemical Abstracts, vol. 69, No. 8, p. 2658, Abstract No. 2838d, Aug. 1968.
Akana Yoshinori
Ikeyama Seiichi
Iwata Kenji
Kioka Mamoru
Kohyama Masaki
Mitsui Petrochemical Industries Ltd.
Teskin Fred
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