Olefin-based polymer

Patent metadata

Field	Value
Publication number	US-10023669-B2
Application number	US-201615500859-A
Country	US
Kind code	B2
Filing date	Mar 23, 2016
Priority date	Mar 26, 2015
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

The present invention relates to an olefin-based polymer exhibiting a single peak when analyzed by gel permeation chromatography (GPC), and having three elution temperatures Te1, Te2 and Te3 when measuring temperature rising elution fractionation (TREF) at a temperature ranging from −20° C. to 120° C. Accordingly, the olefin-based polymer having excellent mechanical strength, and in particular, significantly improved impact strength is provided.

First claim

The invention claimed is:

1. An olefin-based polymer which exhibits a single peak when analyzed by gel permeation chromatography, and satisfies the following requirements (1) to (4):
(1) Density: from 0.850 g/cc to 0.910 g/cc
(2) Melt index when measured under the conditions of 190° C. and 2.16 kg weight: from 0.1 g/10 min to 100 g/10 min,
(3) Molecular weight distribution: from 1.5 to 4.0, and
(4) Comprising three elution temperatures Te1, Te2 and Te3 of the olefin-based polymer in a temperature range from −20° C. to 120° C. when measuring temperature rising elution fractionation.

2. The olefin-based polymer of claim 1 , wherein the Te1 is a relatively lower temperature than the Te2, and the Te2 is a relatively lower temperature than the Te3, when measuring temperature rising elution fractionation, and
Te1 is in a range from −20° C. to 100° C.; Te2 is in a range from 0° C. to 120° C.; and Te3 is in a range from 20° C. to 120° C. in a density range from 0.850 g/cc to 0.910 g/cc of the olefin-based polymer.

3. The olefin-based polymer of claim 1 , wherein the Te1 is in a range from −20° C. to 30° C.; the Te2 is in a range from 10° C. to 80° C.; and Te3 is in a range from 40° C. to 120° C. in a density range from 0.86 g/cc to 0.88 g/cc of the olefin-based polymer.

4. The olefin-based polymer of claim 1 , wherein the olefin-based polymer comprises a first semi-crystalline olefin-based polymer, a second semi-crystalline olefin-based polymer and a third semi-crystalline olefin-based polymer, and
a fraction ratio of a peak for the first semi-crystalline olefin-based polymer is 5% to 90%; a fraction ratio of a peak for the second semi-crystalline olefin-based polymer is 5% to 90%; and a fraction ratio of a peak for the third semi-crystalline olefin-based polymer is 5% to 90% when measuring TREF.

5. The olefin-based polymer of claim 1 , wherein the olefin-based polymer comprises a first semi-crystalline olefin-based polymer, a second semi-crystalline olefin-based polymer and a third semi-crystalline olefin-based polymer, and
a fraction ratio of a peak for the first semi-crystalline olefin-based polymer is 30% to 80%; a fraction ratio of a peak for the second semi-crystalline olefin-based polymer is 5% to 40%; and a fraction ratio of a peak for the third semi-crystalline olefin-based polymer is 5% to 50% when measuring TREF.

6. The olefin-based polymer of claim 1 , which comprises three crystallization temperatures Tc1, Tc2 and Tc3, and the Tc1 is 5° C. or lower; Tc2 is in a range from 0° C. to 60° C.; and the Tc3 is in a range from 80° C. to 130° C. in a density range from 0.850 g/cc to 0.910 g/cc of the olefin-based polymer when measuring a differential scanning calorimetry.

7. The olefin-based polymer of claim 1 , wherein melting index of the olefin-based polymer is from 0.1 g/10 min to 30 g/10 min when measured under the conditions of 190° C. and 2.16 kg weight.

8. The olefin-based polymer of claim 1 , wherein weight average molecular weight of the olefin-based polymer is from 20,000 g/mol to 200,000 g/mol.

9. The olefin-based polymer of claim 1 , wherein molecular weight distribution of the olefin-based polymer is from 1.5 to 3.0.

10. The olefin-based polymer of claim 1 , wherein the olefin-based polymer is for hollow molding, extrusion molding or injection molding.

Assignees

• Lg Chemical Ltd

Inventors

• Kim Hyo Ju
• Woo Ji Yoon
• Park Sang Eun
• Lee Young Woo
• Lee Choong Hoon
• Park Hae Woong
• Choe Ik Je

Classifications

• C08F4/6592

  containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring · CPC title

• C08F2420/04

  Cp or analog not bridged to a non-Cp X ancillary anionic donor · CPC title

• C08F4/65912

  in combination with an organoaluminium compound · CPC title

• C08F210/14

  Monomers containing five or more carbon atoms · CPC title

• C08F2420/02

  Cp or analog bridged to a non-Cp X anionic donor · CPC title