C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/622, 402/641
C08F 10/06 (2006.01) C08F 4/64 (2006.01) C08F 10/08 (2006.01) C08F 210/04 (2006.01) C08F 210/06 (2006.01)
Patent
CA 1070900
ABSTRACT OF THE DISCLOSURE A random copolymer consisting essentially 40 to 90 mole% of propylene and 60 to 10 mole% of 1-butene, and having (A) a boiling n-heptane-insoluble content of not more than 5% by weight based on the weight of the copolymer, (B) a boiling methyl acetate-soluble content of not more than 2% by weight based on the weight of the copolymers, (C) a melting point, de- termined by differential thermal analysis, of 40 to 140°C., (D) an intrinsic viscosity, determined in decalin at 135°C., of 0.5 to 6 dl/g, (E) an elongation at break, measured by JIS K6301, of at least 300%, (F) a tensile strength at break, measured by JIS K6301, of at least 50 kg/cm2, and (G) a haze, measured by JIS K6714, of not more than 40%. The above copolymer has superior properties for pro- duction of various kinds of melt-shaped articles such as films, sheets, vessels and tubes, and can be obtained by copolymerizing propylene and 1-butene in the presence of a catalyst prepared from a solid complex containing magnesium, titanium and halogen, an organometal compound of a metal of Groups I to III of the periodic table, and an electron donor. - 1 -
293896
Kajiura Hirokazu
Minami Syuji
Oda Hidekuni
Ohno Takao
Yamamoto Yozo
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