Olefin-based polymers and uses thereof

1. A 4-methyl-1-pentene-based polymer comprising

50 to 100% by weight of a constituent unit derived from 4-methyl-1-pentene, and 0 to 50% by weight of a constituent unit derived from at least one olefin selected from olefins having 2 to 20 carbon atoms except 4-methyl-1-pentene, and having the following properties:

i) the diad isotacticity is 70% or greater;

ii) the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) as measured by gel permeation chromatography (GPC) is in the range of 1.0 to 3.5; and

iii) the intrinsic viscosity [η] is 1.2 (dl/g) or greater.

2. A 4-methyl-1-pentene-based copolymer comprising

50 to 99.9% by weight of a constituent unit derived from 4-methyl-1-pentene, and 0.1 to 50% by weight of a constituent unit derived from at least one olefin selected from olefins having 2 to 20 carbon atoms except 4-methyl-1-pentene, and having the following properties:

i) the diad isotacticity is 70% or greater;

ii) the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) as measured by gel permeation chromatography (GPC) is in the range of 1.0 to 3.5; and

iii) the intrinsic viscosity [η] is 1.2 (dl/g) or greater.

3. An olefin-based polymer A comprising

90 to 100% by weight of a constituent unit derived from 4-methyl-1-pentene, and 0 to 10% by weight of a constituent unit derived from at least one olefin selected from olefins having 2 to 20 carbon atoms except 4-methyl-1-pentene, and having the following properties:

i) the diad isotacticity is 70% or greater;

ii) the melting point (Tm) measured by DSC is 225° C. or higher;

iii) the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) as measured by gel permeation chromatography (GPC) is in the range of 1.0 to 3.5; and

iv) the proportion of the decane-soluble fraction is 1% by weight or less.

4. An olefin-based polymer B comprising

50 to 99% by weight of a constituent unit derived from 4-methyl-1-pentene, and 1 to 50% by weight of a constituent unit derived from at least one olefin selected from olefins having 2 to 20 carbon atoms except 4-methyl-1-pentene, and having the following properties:

i) the diad isotacticity is 70% or greater;

ii) the melting point (Tm) measured by DSC is below 220° C. or unrecognizable;

iii) the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) as measured by gel permeation chromatography (GPC) is in the range of 1.0 to 3.5; and

iv) the intrinsic viscosity [η] is 1.5 (dl/g) or greater.

5. A 4-methyl-1-pentene homopolymer having the following properties:

i) the diad isotacticity is 70% or greater;

ii) the melting point (Tm) measured by DSC is 230° C. or higher;

iii) the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) as measured by gel permeation chromatography (GPC) is in the range of 1.0 to 3.5; and

iv) the intrinsic viscosity [η] is 1.2 (dl/g) or greater.

6. A 4-methyl-1-pentene-based elastomer comprising

50 to 90% by weight of a constituent unit derived from 4-methyl-1-pentene, and 10 to 50% by weight of a constituent unit derived from at least one olefin selected from olefins having 2 to 20 carbon atoms except 4-methyl-1-pentene, and having the following properties:

i) the diad isotacticity is 70% or greater;

ii) the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) as measured by gel permeation chromatography (GPC) is in the range of 1.0 to 3.5; and

iii) the intrinsic viscosity [η] is 1.2 (dl/g) or greater.

7. A method for preparing the polymer or elastomer according to claim 1 , comprising reacting the 4-methyl-1-pentene and the olefin, if present, in the presence of a metallocene catalyst represented by the following Formula (1) or Formula (2):

wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 and R 14 , which may be identical or different, are each selected from hydrogen, a hydrocarbon group and a silicon-containing hydrocarbon group; the neighboring substituents from R 1 to R 4 may be bound to each other to form a ring, and the neighboring substituents from R 5 to R 12 may be bound to each other to form a ring; A is a divalent hydrocarbon group having 2 to 20 carbon atoms, which may contain some unsaturated bonds and/or aromatic rings, and A may contain two or more cyclic structures including the ring formed by A together with Y; M is a metal selected from Group 4 of the Periodic Table of Elements; Y is carbon or silicon; Q is selected from halogen, a hydrocarbon group, an anionic ligand, and a neutral ligand which is capable of coordination with an electron lone pair and may be of identical or different combination; and j is an integer from 1 to 4.

8. An injection molded article comprising the polymer or elastomer according to claim 1 .

9. A film or sheet comprising the polymer or elastomer according to claim 1 .

10. A fiber comprising the polymer or elastomer according to claim 1 .

11. A blow molded vessel comprising the polymer or elastomer according to claim 1 .

12. A release film comprising the polymer or elastomer according to claim 1 .

13. A non-woven fabric comprising the polymer or elastomer according to claim 1 .

14. A damping material comprising the polymer or elastomer according to claim 1 .