Polyolefin and preparation method thereof

US20120172548A1Inactive Publication Date: 2012-07-05LG CHEM LTD
1 Cites 13 Cited by

Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
LG CHEM LTD
Publication Date
2012-07-05
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A polyolefin has 1) a density in the range of 0.93 to 0.97 g / cm3, 2) a BOCD (Broad Orthogonal Co-monomer Distribution) index defined by a given equation in the range of 1 to 5, and 3) a molecular weight distribution (weight average molecular weight / number average molecular weight) in the range of 4 to 10. A supported hybrid metallocene catalyst comprises a first metallocene compound represented by a first given formulae, a second metallocene compound represented by one of three given formulae, and a support.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The present invention relates to a polyolefin that has high environmental stress cracking resistance (ESCR), a high impact property, and an excellent die swell property, and a method of preparing the same.

[0002] This application claims priority from Korea Patent Application No. 10-2007-0042602 filed on May 2, 2007 in the KIPO, the disclosure of which is incorporated herein by reference in its entirety.BACKGROUND ART

[0003] In general, blow molding is a method in which preliminary molding is performed by using extrusion or injection to form a tube, this is provided in a mold, air is blown thereinto to swell the resulting structure, and cooling solidification is performed to obtain a molded body having a predetermined shape. The blow molding is largely classified into extrusion blow molding (extrusion or direct blow molding), injection blow molding, and stretch blow molding according to a preliminary molding method.

[0004] Hollow bottle products having a small thicknes...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More