Patent ID: 11969976
Assignee: DOW QUIMICA DE COLOMBIA S.A.
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A multilayer film comprising:
a first layer comprising a first polyolefin;
a second layer comprising a second polyolefin;
a third layer comprising a third polyolefin, wherein the second layer is positioned between the first layer and the third layer;
a fourth layer comprising a fourth polyolefin, wherein the third layer is positioned between the second layer and the fourth layer; and
a fifth layer comprising a fifth polyolefin, wherein the fourth layer is positioned between the third layer and the fifth layer;
wherein two or more of the first polyolefin, the second polyolefin, the third polyolefin, the fourth polyolefin, and the fifth polyolefin are the same or different in composition; and
wherein the third polyolefin is a polyethylene composition comprising:
(a) a first polyethylene fraction having a single peak in a temperature range of 45° C. to 87° C. in an elution profile via improved comonomer composition distribution (iCCD) analysis method, wherein a first polyethylene fraction area is an area in the elution profile beneath the single peak of the first polyethylene fraction between 45° C. and 87° C.; and
(b) a second polyethylene fraction having a single peak in a temperature range of 95° C. to 120° C. in the elution profile via iCCD analysis method and wherein a second polyethylene fraction area is an area in the elution profile beneath the single peak of the second polyethylene fraction between 95° C. and 120° C.;
wherein the polyethylene composition has a density of 0.924 g/cm3 to 0.936 g/cm3 and a melt index (I2) of 0.25 g/10 minutes to 2.0 g/10 minutes, wherein the first polyethylene fraction area comprises at least 40% of the total area of the elution profile, wherein a ratio of the first polyethylene fraction area to the second polyethylene fraction area is 0.75 to 2.5, and wherein the width of the single peak of the second polyethylene fraction at 50 percent peak height is less than 5.0° C.