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US 2025/0019576 A1Published application
Film comprising an ethylene-a-olefin copolymer
AssigneeSabic Global Technologies B.V.
InventorsLi YUAN, Ling FAN, Rajesh CHITTA, Qiang WANG, Shengming CUI, You Jun WU
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Abstract
A film includes an ethylene-α-olefin copolymer. The film is a layer in a multilayer structure. The film has improved peel force and leaves no residue after being peeled off from a substrate.
Claims19
A film comprising an ethylene-α-olefin copolymer comprising moieties derived from ethylene and moieties derived from an α-olefin comprising 3 to 10 carbon atoms, wherein the ethylene-α-olefin copolymer has:
- a short chain branching ratio (SCBR) of >0.85,
- wherein SCBR is defined as:
- SCBR
- =
- SCB
- 2
-
- 0
-
- 0
- SCB
- 2
-
- 0
- wherein SCB200 is the quantity of short chain branches (SCB) of the ethylene-α-olefin copolymer at Mw=200,000 g/mol and SCB20 is the quantity of short chain branches of the ethylene-α-olefin copolymer at Mw=20,000 g/mol, wherein the SCB quantity is determined via GPC-IR and expressed as the number of branches per 1000 carbon atoms (/1000C);
- a melt flow rate (MFR) of at least 1.5 g/10 min, as measured according to ASTM D1238-20 at 190° C. with a 2.16 kg load;
- and
- a fraction of material that is eluted in analytical temperature rising elution fractionation (a-TREF) at a temperature ≤30.0° C. of ≥5.0 wt % and ≤20.0 wt %, based on the total amount of the ethylene-α-olefin copolymer.
15 more elements
(canceled)
Dependencies are inferred from the claim text.