Olefin copolymer composition

Details Olefin copolymer composition Olefin copolymer composition

1988-08-26

1990-07-24

Seccuro, Carman J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

428516, C08L 2320, C08L 2308

Patent

active

049436155

ABSTRACT:
The present invention relates to an olefin copolymer composition, which olefin copolymer composition contains (A) 25 to 97 wt. % of a propylene copolymer, and (B) 75 to 3 wt. % of a butene-1 copolymer having a content of .alpha.-olefin unit with 2 to 8 carbon atoms of 1 to 35 mol %, an intrinsic viscosity of 0.9 to 7.2 dl/g measured in decalin heated to 150.degree. C., a value of weight-average molecular weight
umber-average molecular weight of 4 to 15, a temperature difference of 2.degree. to 40.degree. C. between the highest value and the lowest value of the melting point measured by the differential scanning calorimetric analysis, and a .alpha.-olefin block property of 0.015 or lower measured by the nuclear magnetic resonance spectral analysis, can provide molded items excellent, for example, in heat-sealing properties, transparency, blocking resistance, and surface gloss, and is good in processability.

REFERENCES:
patent: 4600762 (1986-07-01), Fukui et al.
patent: 4642269 (1987-02-01), Kohyama et al.
patent: 4734328 (1988-03-01), Kohyama et al.
patent: 4766178 (1988-08-01), Hwo

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