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Geomembrane applications based on polyethylene

A polyethylene and geomembrane technology, applied in the field of geomembrane preparation, can solve the problems of not providing information on the amount of comonomers, not providing information on the distribution of comonomers, etc.

Active Publication Date: 2017-08-29
ABU DHABI POLYMERS CO LTD BOROUGE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It does not provide information on the comonomer distribution in the finished polymer, i.e. it does not provide information on the amount of comonomer in separate fractions of bimodal ethylene copolymers

Method used

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  • Geomembrane applications based on polyethylene
  • Geomembrane applications based on polyethylene
  • Geomembrane applications based on polyethylene

Examples

Experimental program
Comparison scheme
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Embodiment

[0117] A. Measurement method

[0118] Unless otherwise stated, the following definitions of terms and assay methods apply to the above general description of the invention as well as to the following examples.

[0119] Calculation of the 1-hexene content in the second polyethylene fraction (PE-F2):

[0120]

[0121] in,

[0122] w(PEF1) is the weight fraction of the first polyethylene fraction (PE-F1),

[0123] w(PEF2) is the weight fraction of the second polyethylene fraction (PE-F2),

[0124] C(PEF1) is the 1-hexene content [wt%] in the first polyethylene fraction (PE-F1),

[0125] C(PEC) is the 1-hexene content [wt%] in polyethylene (PE-C), i.e. the mixture of the first polyethylene fraction (PE-F1) and the second polyethylene fraction (PE-F2) 1-hexene content in [wt%],

[0126] C(PEF2) is the calculated 1-hexene content [wt%] in the second polyethylene fraction (PE-F2).

[0127] Calculation of the melt flow rate MFR of the second polyethylene fraction (PE-F2) 2 (19...

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Abstract

Polyethylene comprising a first polyethylene fraction and a second polyethylene fraction, said first fraction is an ethylene copolymer of ethylene and 1-butene and said second fraction is an ethylene copolymer of ethylene and 1-hexene.

Description

technical field [0001] The present invention relates to a novel polyethylene comprising at least two different polyethylene fractions with different molecular weights and 1-butene contents, which is particularly suitable for the production of geomembranes. Background technique [0002] Geomembranes are very low permeability synthetic membrane linings or barriers used to control liquid (or gas) migration. Geomembranes often have different (polymeric) layers. Polyethylene is envisaged as a candidate material for at least one of these layers. However, the requirements for polyethylene in geomembranes are quite stringent. For example, the Geosynthetics Research Institute requires that polyethylene used in geomembranes must have a tensile strain at break of at least 700%. [0003] WO 2006 / 067180 describes based on bimodal polyethylene (its density is 0.925 ~ 0.945g / cm 3 Within the scope of) geomembrane application (application). However, this application does not mention how...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08F210/16C08F210/08C08F210/14C08F4/654C08F4/655C08F4/02
CPCC08F210/16C08J5/18C08L23/0815C08J2423/08C08J2323/08C08L2205/02C08L2205/025C08L2201/14C08F2/001C08F210/08C08F2500/12C08F2500/07C08F210/14C08F2500/04C08F4/6546C08F4/6555C08F4/025C08F2500/17C08F2500/19C08F2500/21B29C48/08C08F2500/18C08L2314/02
Inventor 瓦西列斯·加莱特萨托斯拉斯·厄恩尼拉伊·迪克西特罗文德·辛赫
Owner ABU DHABI POLYMERS CO LTD BOROUGE