Claims
- 1. An ethylene-α-olefin copolymer which is a copolymer of ethylene with a C3-20 α-olefin, said copolymer satisfying the following conditions (a) to (e):(a) the density (D) is from 0.850 to 0.950 g/cm3, (b) the melt flow rate (MFR) value as measured at 190° C. under a load of 2.16 kg in accordance with ASTMD 1238 is in the range of from 0.1 to 50 g/10 min., (c) the relation between the melt tension (MT) and the melt flow rate (MFR) at 190° C. satisfies the following formula (1): log(MT)≧−0.91×log(MFR)+0.06 (1), (d) the following three formulae (2), (3) and (4) are satisfied: Tmax≦972D−816 (2) logW60≦−0.114 Tmax+9.48 (3) logW90≧0.0394 Tmax−2.95 (4) where D is the density, Tmax is the elution peak temperature (°C.) by the cross fractionation measurement, W60 is the weight percent (wt %) of a soluble content at 60° C. or lower, and W90 is the weight percent (wt %) of a soluble content at 90° C. or higher, determined by crossfractionation using o-dichlorobenzene as solvent; and(e) the film haze (%)≦1.5×104×(D-0.9)2+3 (5).
- 2. The ethylene-α-olefin copolymer according to claim 1, wherein said condition (d) is such that the three formulae (2)′, (3) and (4)′ are satisfied:Tmax≦972D−816 (2)′logW60≦−0.114Tmax+9.48 (3) logW90≧0.0394Tmax−2.81 (4)′
- 3. The ethylene-α-olefin copolymer according to claim 1, wherein the density of said condition (a) is from 0.850 to 0.935 g/cm3.
Priority Claims (1)
Number |
Date |
Country |
Kind |
8-290145 |
Oct 1996 |
JP |
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Parent Case Info
This application is a Continuation of U.S. application Ser. No. 08/959,269, filed on Oct. 28, 1997, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
5928982 |
Suga et al. |
Jul 1999 |
A |
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Continuations (1)
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Number |
Date |
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Parent |
08/959269 |
Oct 1997 |
US |
Child |
09/931755 |
|
US |