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Bopp with homogeneous film morphology

A technology of polypropylene film and thin layer, applied in the direction of organic insulators, plastic/resin/wax insulators, electrical components, etc., can solve the problems that dominate the overall performance

Active Publication Date: 2012-10-03
BOREALIS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, it's not the strongest extreme value that dominates, it's the weakest that dominates the overall performance

Method used

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  • Bopp with homogeneous film morphology
  • Bopp with homogeneous film morphology
  • Bopp with homogeneous film morphology

Examples

Experimental program
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Effect test

preparation example Construction

[0070] The preparation of the polypropylene of the present invention is described in more detail below.

[0071] The polypropylene of the present invention is obtained in particular by a novel catalyst system according to ASTM D 3663 (N 2 ) measured for surface areas below 20m 2 / g and comprising a catalyst represented by a transition metal compound of formula (I):

[0072] (Cp) 2 wxya 2 (I)

[0073] in:

[0074] X is independently a monovalent anionic ligand, such as a σ ligand,

[0075]Cp is an organic ligand selected from the group consisting of unsubstituted cyclopentadienyl, unsubstituted indenyl, unsubstituted tetrahydroindenyl, unsubstituted fluorenyl, substituted cyclopentadienyl , substituted indenyl, substituted tetrahydroindenyl, and substituted fluorenyl,

[0076] With the proviso that both Cp ligands are selected from the group mentioned above and that the two Cp ligands are chemically identical, i.e. identical,

[0077] R is a bridging group connecti...

Embodiment

[0165] A. Determination method

[0166] Unless otherwise stated, the following definitions of terms and determination methods are applicable to the above description and the following examples of the present invention. Quantification of microstructure by NMR spectroscopy

[0167] Quantitative nuclear magnetic resonance (NMR) spectroscopy was used to quantify the isotacticity, regio-regularity, and comonomer content of the polymers.

[0168] use for 1 H and 13 C Bruker Advance III 400NMR spectrometers operating at 400.15MHz and 100.62MHz respectively to record the quantitative 13 C{ 1 H} NMR spectrum. At 125°C, with nitrogen for all cavities, by using 13 C Optimal 10mm Extended Temperature Probe ( 13 C optimized 10mm extended temperature probehead) to record all spectra.

[0169] For polypropylene homopolymers, dissolve approximately 200 mg of material in 1,2-tetrachloroethane-d 2 (TCE-d 2 )middle. To ensure a homogeneous solution, after initial sample preparation in ...

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Abstract

Polypropylene having a melting temperature (Tm) of at least 151.0 DEG C. a xylene cold soluble fraction (XCS) of not more than 1.5 wt.%. and 18.0 to 50.0 wt.% of a crystalline fraction melting at or above 160 DEG C, wherein said fraction is determined by the stepwise isothermal segregation technique (SIST).

Description

technical field [0001] The present invention relates to a new polypropylene and a capacitor film made from said polypropylene, as well as to the preparation of said polypropylene. Background technique [0002] Capacitor films must withstand extreme conditions such as high temperature and high electrical breakdown strength. In addition, it is preferable that the capacitor film has better mechanical properties such as higher stiffness. As far as electrical breakdown strength is concerned, it must be considered that the overall performance or characteristics of the system (here capacitor-film) are dominated by the performance of smaller extreme regions in the system. Unfortunately, it is not the strongest extreme value that dominates, but the weakest value dominates the overall performance. Therefore, even though it is preferred that samples of capacitor films have a higher electrical breakdown strength, it must be ensured that different samples of the same capacitor film als...

Claims

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Application Information

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IPC IPC(8): C08F110/06H01B3/44B32B27/32
CPCC08F2410/01C08F110/06H01B3/441C08J5/18C08F4/65912C08J2323/12C08F10/00C08F2500/12C08F2500/02C08F2500/20C08F2500/19C08F2500/26C08F4/65927
Inventor D・格洛格尔J・帕维莱宁
Owner BOREALIS AG
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