OLEFIN BASED POLYMER HAVING EXCELLENT PROCESSABILITY (As amended)

Patent metadata

Field	Value
Publication number	US-2016333124-A1
Application number	US-201515111394-A
Country	US
Kind code	A1
Filing date	Dec 15, 2015
Priority date	Dec 15, 2014
Publication date	Nov 17, 2016
Grant date	—

Abstract

The present invention relates to an ethylene-alpha olefin copolymer having excellent processability. The copolymer according to the present invention has a high molecular weight and a broad molecular weight distribution and exhibits an excellent processability and an improved mechanical physical property, and thus can be effectively used for the application in need thereof.

First claim

1 . An ethylene-alpha olefin copolymer having:
a weight average molecular weight of 50,000 to 150,000,
a molecular weight distribution (Mw/Mn) of 2 to 5,
a density of 0.910 to 0.940 g/cm 3 ,
MFRR (MI 10 /MI 2.16 ) of 10 to 20, and
a C 2 value of −0.30 to −0.60 when a graph of complex viscosity (η* [Pa·s]) at the frequency (ω [rad/s]) of 0.05 to 500 rad/s is fitted to the following Equation 1:
y=c 1 x c 2   [Equation 1]

a plateau delta value in Van Gurp Palmen plot satisfies the following Equation 2:
−0.02×(Mw/10 4 )+0.76≦plateau delta≦−0.02×(Mw/10 4 )+1.36.  [Equation 2]

2 . The ethylene-alpha olefin copolymer according to claim 1 ,
wherein the C 1 is 30,000 to 300,000.

3 . The ethylene-alpha olefin copolymer according to claim 1 ,
wherein the weight average molecular weight is 90,000 to 125,000.

4 . The ethylene-alpha olefin copolymer according to claim 1 ,
wherein the molecular weight distribution is 2.5 to 3.5.

5 . The ethylene-alpha olefin copolymer according to claim 1 ,
wherein the density is 0.915 to 0.930 g/cm 3 .

6 . The ethylene-alpha olefin copolymer according to claim 1 ,
wherein the C 2 is −0.30 to −0.55.

7 . The ethylene-alpha olefin copolymer according to claim 1 ,
wherein the plateau delta value satisfies the following Equation 2-1:
−0.02×(Mw/10 4 )+0.91≦plateau delta≦−0.02×(Mw/10 4 )+1.26.  [Equation 2-1]

8 . The ethylene-alpha olefin copolymer according to claim 1 ,
wherein the alpha olefin is one or more selected from the group consisting of propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-octene, 1-decene, 1-undecene, 1-dodecene, 1-tetradecene, 1-hexadecene, and 1-itocene.

Assignees

• Lg Chemical Ltd

Inventors

• Sung Yu Taek
• Lee Ki Soo
• Kwon Heon Yong
• Hong Dae Sik
• Kim Se Young
• Lee Sung Min
• Jeong Dong Hoon
• Shin Eun Young
• Kwon Hyun Jee

Classifications

• C08L2203/16

  used for films · CPC title

• C08F4/65912

  in combination with an organoaluminium compound · CPC title

• C08F210/16 Primary

  Copolymers of ethene with alpha-alkenes, e.g. EP rubbers · CPC title

• C08F2500/12

  Melt flow index or melt flow ratio · CPC title

• C08F4/65916

  supported on a carrier, e.g. silica, MgCl2, polymer · CPC title