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1. WO2020112551 - COPOLYMÈRES D’OLÉFINES CYCLIQUES ET FILMS PRÉPARÉS À PARTIR DE CEUX-CI

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

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CLAIMS

What is claimed is:

1. A copolymer comprising:

a C2-C40 monomer content of from about 75 wt% to about 99.5 wt%; and

a C5-C40 cyclic olefin comonomer content of from about 0.5 wt% to about 25 wt%; wherein the copolymer has a density of about 0.91 g/cm3 to about 0.933 g/cm3.

2. The copolymer of claim 1 , wherein the C2-C40 monomer is ethylene.

3. The copolymer of claims 1 or 2, wherein the C5-C40 cyclic olefin comonomer is selected from one or more of dicyclopentadiene, cyclopentene, cycloheptene, cyclooctene, cyclooctadiene, cyclododecene, 7-oxanorbomene, 7-oxanorbomadiene, l-hydroxy-4-cyclooctene, l-acetoxy-4-cyclooctene, 5-methylcyclopentene, cyclopentene, dicyclopentadiene, norbomene, and norbomadiene.

4. The copolymer of claim 3, wherein the C5-C40 cyclic olefin comonomer is norbomene.

5. The copolymer of any of claims 1 to 4, wherein the C5-C40 cyclic olefin comonomer content is from about 9 wt% to about 15 wt%.

6. The copolymer of any of claims 1 to 5, wherein the copolymer has a density bout 0.92 g/cm3 to about 0.933 g/cm3.

7. The copolymer of any of claims 1 to 6, wherein the copolymer has a melt strength of from about 7 cN to about 14 cN.

8. The copolymer of claim 7, wherein the copolymer has a melt strength of from about 10 cN to about 14 cN.

9. The copolymer of any of claims 1 to 8, wherein the copolymer has a melt index ratio of from about 25 to about 70.

10. The copolymer of claim 9, wherein the copolymer has a melt index ratio of from about 28 to about 55.

11. A film comprising the copolymer of any of claims 1 to 10.

12. The film of claim 11, wherein the film has a thickness of from about 1 mil to about 20 mils.

13. The film of any of claims 11 or 12, wherein the film has a total haze of about 1 % to about 25%.

14. The film of claim 13, wherein the film has a total haze of about 3% to about 10%.

15. The film of any of claims 11 to 14, wherein the film has an internal haze of from about 1% to about 10%.

16. The film of claim 15, wherein the film has an internal haze of from about 1% to about 6%.

17. The film of any of claims 11 to 16, wherein the film has a 1% Secant Modulus MD of from about 20,000 psi to about 75,000 psi.

18. The film of any of claims 11 to 17, wherein the film has a hot tack strength of from about 2 (N/25.4 mm) to about 18 (N/25.4 mm) at a temperature of 125°C.

19. The film of claim 18, wherein the film has a hot tack strength of from about 10 (N/25.4 mm) to about 13 (N/25.4 mm) at a temperature of 125°C.

20. The film of any of claims 11 to 19, wherein the film has a heat seal strength of from about 2 lbs/in2 to about 12 lbs/in2 at a seal bar temperature of 130°C.

21. The film of claim 20, wherein the film has a heat seal strength of from about 6 lbs/in2 to about 9 lbs/in2 at a seal bar temperature of 130°C.

22. The film of any of claims 11 to 21, wherein the film has an MD Elmendorf Tear of from about 20 g/mil to about 150 g/mil.

23. The film of any of claims 11 to 22, wherein the film has an MD Elmendorf Tear of from about 150 g/mil to about 225 g/mil.

24. The film of any of claims 11 to 23, wherein the film has a Dart Impact of from about 80 g/mil to about 250 g/mil.

25. The film of any of claims 11 to 24, wherein the film has a Dart Impact of from about 250 g/mil to about 450 g/mil.