Stiff polypropylene composition with excellent elongation at break

A polypropylene composition and polypropylene technology, applied in the field of new polypropylene compositions, can solve problems affecting the ductility of polypropylene and other issues

Inactive Publication Date: 2013-05-01
BOREALIS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the presence of commercial fillers often negatively affects the ductility of polypropylene

Method used

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  • Stiff polypropylene composition with excellent elongation at break
  • Stiff polypropylene composition with excellent elongation at break
  • Stiff polypropylene composition with excellent elongation at break

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0279] Preparation of the catalysts described herein can be performed batchwise, semi-continuously, or continuously. In a semi-continuous process or a continuous process, the complex solution of the Group 2 metal and the electron donor is prepared by reacting the compound of the metal with the electron donor in an organic liquid reaction medium, and the complex The compound solution is mixed with at least one transition metal compound, which may be dissolved in the same or a different organic liquid reaction medium. The solution thus obtained is then stirred, possibly in the presence of an emulsion stabilizer, and the stirring emulsion is then fed into a temperature gradient reactor in which the emulsion is subjected to a temperature gradient such that Causes the solidification of the dispersed phase droplets in the emulsion. TMA is preferably included in the complex solution, or TMA is added to the solution before feeding the stirred solution to the temperature gradient reac...

Embodiment

[0313] A. Measurement method

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Abstract

Polypropylene composition comprising (a) a high melt strength polypropylene having a melt flow rate MFR 2 (230 °C) of equal or below 15 g/l 0min and a branching index g' of below 1.0, (b) a first heterophasic propylene copolymer comprising €¢ a polypropylene having a melt flow rate MFR 2 (230 °C) in the range of 50 to 500 g/10min and an elastomeric propylene copolymer having a propylene content in the range of 50 to 80 wt.-% and €¢ an intrinsic viscosity (IV) of equal or more than 2.5 dl/g, (c) a second heterophasic propylene copolymer comprising €¢ a random propylene copolymer having a melt flow rate MFR 2 (230 °C) in the range of 1 to 40 g/10min, a branching index g' of 1.0, and a comonomer content of more than 0.5 wt.-%,and €¢ an elastomeric propylene copolymer having a propylene content in the range of 50 to 80 wt.-%, and an intrinsic viscosity (IV) of equal or below 2.4 dl/g, (d) a polyethylene plastomer having an ethylene content of at least 50 wt.-%, and (e) a mineral filler (F).

Description

technical field [0001] The present invention relates to a new polypropylene composition having excellent elongation at break and high rigidity, its use, and materials made therefrom. Background technique [0002] Polypropylene is the material of choice for many applications because it can be fabricated to specific desired purposes. Polypropylene, for example, is widely used in the automotive industry because it is durable and durable. Typically polypropylene may be added, inter alia, with mineral fillers in order to increase rigidity. However, the presence of commercial fillers generally negatively affects the ductility of polypropylene. These negative trends caused by mineral fillers can be counteracted to some extent by heterophasic polypropylene systems. Heterophasic polypropylenes are therefore widely used in the automotive industry (for example, in bumpers) because they combine reasonable stiffness with good ductility. Heterophasic polypropylenes contain a polypropy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14
CPCC08L23/0815C08L23/14C08K5/0083C08L2205/035C08L23/16C08L2205/22C08K3/346C08L23/06C08L23/142C08L23/12C08L2207/02C08L2666/04C08F210/06C08F10/06C08F2/001C08F110/06C08F4/6492C08F4/6465C08K3/34C08F210/16C08F2500/12C08F2500/15C08F2500/17C08F2500/27C08F2500/35C08F2500/38C08F2500/11
Inventor C·科克C·格赖因T·舍德尼希
Owner BOREALIS AG
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