ETHYLENE-ALPHA-OLEFIN COPOLYMER COMPOSITION

WIPO Patent Application WO/1982/000470

A1

A composition which has excellent transparency and impact resistance and improved low-temperature heat-sealing properties, improved strength and flexing resistance at heat-sealed portions thereof, and which comprises a mixture of at least two ethylene-rich ethylene-(Alpha)-olefin copolymers (A) and (B): (A) 95 to 45wt% of a random copolymer between ethylene and a C5 to C10(Alpha)-olefin, which has a melt index of 0.1 to 20 g/ 10 min, a density of 0.910 to 0.940 g/cm3, a crystallinity of 40 to 70% (measured by X-ray analysis), a m. p. of 115 to 130 C, and an ethylene content of 94 to 99.5 mol%; and (B) 5 to 60wt% of a random copolymer between ethylene and a C3 to C10 (Alpha)-olefin, which has a melt index of 0.1 to 50 g/10 min, a density of 0.870 to 0.900 g/cm3, a crystallinity of 5 to 40% (measured by X-ray analysis), a m. p. of 40 to 100 C, and an ethylene content of 85 to 95 mol%.

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SHIBATA Y (JP)
NAGANUMA S (JP)

PCT/JP1981/000173

February 18, 1982

August 07, 1981

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MITSUI PETROCHEMICAL IND (JP)
SHIBATA Y (JP)
NAGANUMA S (JP)

C08L23/16; C08F210/16; C08L7/00; C08L21/00; C08L23/00; C08L23/08; C08L101/00; (IPC1-7): C08L23/08; C08L23/16

JPH04110984B
JPH04744536B
JPH05582140A
JPH05597928A
JPH04819637A
JPH05392887A

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