Impact resistant LLDPE composition and films made thereof

A film and polymer technology, applied in the field of new low-density polyethylene, can solve the problems of poor optical properties, high viscosity, etc.

Active Publication Date: 2011-10-12
BASELL POLYOLEFINE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high viscosity and poor optical properties are not compensated by the superior dart impact resistance exhibited by films prepared with this blend

Method used

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  • Impact resistant LLDPE composition and films made thereof
  • Impact resistant LLDPE composition and films made thereof
  • Impact resistant LLDPE composition and films made thereof

Examples

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Embodiment Construction

[0208] The most specific methods have been described or referenced above.

[0209] The NMR sample was placed in a tube under inert gas and optionally melted. Solvent signals were used as internal standards in 1H- and 13C-NMR spectra, and their chemical shifts were converted to values ​​relative to TMS.

[0210] As described by James. C. Randall, JMS-REV. Macromol. Chem. Phys., C29(2&3), 201-317 (1989), branches / 1000 carbon atoms are by means of 13C-NMR and are based on CH3 radicals The total agglomerate content per 1000 carbon atoms was determined. Side chains larger than CH3, in particular ethyl, butyl and hexyl side chain branches / 1000 carbon atoms, are likewise determined in this way. The degree of branching in individual polymer mass fractions was determined by the Holtrup method combined with 13C-NMR (W. Holtrup, Makromol. Chem. 178, 2335 (1977)). 13C-NMR high temperature spectra of the polymers were obtained using a Bruker DPX-400 spectrometer operating at 120°C in Fo...

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Abstract

A novel PE material is devised showing excellent mechanical / optical properties and process ability, e.g. for film extrusion. The polyethylene of the invention is produced in one single e.g. gas phase reactor.

Description

technical field [0001] The present invention relates to novel low density polyethylenes with a multimodal comonomer distribution, and products obtained using such polyethylenes, especially for the production of extruded or blown films. Surprisingly, the LLDPE compositions of the present invention exhibit dramatically enhanced mechanical impact resistance as well as excellent processing properties, which can eliminate the need for processing aids, especially fluoroelastomers, in film processing. Background technique [0002] Polyolefin films made from metallocene-produced LLDPE are currently used in foils or films for packaging goods due to their excellent optical properties and seal strength. However, excellent processability is on the contrary not the point of LLDPE films. [0003] US 5,420,220 / Mobil Oil describes 0.918g / cm 3 A unimodal LLDPE polymer with excellent dart impact strength of about 800g and excellent optical properties with haze values ​​of 5-7, but with a ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/16C08F4/6592C08F4/70
CPCC08F4/65912C08F4/65916C08F4/65925C08F10/00C08F210/16C08J5/18C08J2323/06C08F4/61904C08F210/14C08F2500/08C08F2500/05C08F2500/12C08F2500/10C08F2500/19C08F2500/20C08F2500/17C08F2500/26C08F4/7042
Inventor F·范蒂内尔G·曼内巴赫S·米汉G·迈尔I·维托里亚斯
Owner BASELL POLYOLEFINE GMBH
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