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Polypropylene composition with low shrinkage over wide application temperature range

A polypropylene composition and range technology, which is applied in the field of polypropylene compositions with low shrinkage rate under a wide application temperature range, can solve the problems of difficulty in reducing shrinkage rate, impact strength and shrinkage rate, etc.

Active Publication Date: 2022-03-25
BOREALIS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this creates a dilemma between impact strength and shrinkage, as it is difficult to reduce shrinkage without sacrificing impact strength

Method used

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  • Polypropylene composition with low shrinkage over wide application temperature range
  • Polypropylene composition with low shrinkage over wide application temperature range
  • Polypropylene composition with low shrinkage over wide application temperature range

Examples

Experimental program
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Embodiment Construction

[0320] The invention will now be described in more detail by the examples provided below.

[0321] example

[0322] 1. Definition / measurement method

[0323] Unless otherwise defined, the following definitions of terms and measurement methods apply to the above general description of the invention as well as to the following examples.

[0324] Melting temperature T m , crystallization temperature T c It is measured on 5 to 10 mg samples according to ISO 11357-1 using a Mettler TA820 Differential Scanning Calorimeter (DSC). Crystallization and melting curves were obtained during 10°C / min cooling and heating scans between 30°C and 225°C. Melting and crystallization temperatures are endothermic and exothermic peaks.

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Abstract

The application relates to a polypropylene composition having a melt flow rate MFR measured according to ISO 1133 in the range of 5 to 50 g / 10min 2 (230°C), relates to a composition comprising a polypropylene composition and one or more additives in an amount of up to 4% by weight, based on the total weight of the composition, relates to a method for preparing a polypropylene composition A method and an article comprising a polypropylene composition and use of the polypropylene composition for reducing the brittle-ductile transition temperature.

Description

technical field [0001] The present application relates to a polypropylene composition having a melt flow rate MFR measured according to ISO 1133 in the range of 5 to 50 g / 10min 2 (230°C), relating to a composition comprising a polypropylene composition and one or more additives in an amount of up to 4% by weight based on the total weight of the composition, relating to a method for preparing a polypropylene composition A method and an article comprising the polypropylene composition and the use of the polypropylene composition for lowering the brittle-ductile transition temperature. Background technique [0002] Polypropylenes are used in a variety of applications such as the preferred material in automotive applications as they can be tailored to the specific application required. In automotive applications it is particularly desirable to provide low shrinkage during processing combined with a wide application temperature range. Conventional heterophasic polypropylene pol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F210/16C08L23/16
CPCC08F210/16C08L2205/025C08L2207/02C08L23/12C08F210/06C08F2500/12C08F2500/17C08L23/16C08F4/65927C08F2/001C08F210/02C08L2201/00C08F2500/37C08L2314/06C08F2500/33C08F2500/34
Inventor 马库斯·加莱特纳克劳斯·贝恩赖特纳王静波
Owner BOREALIS AG
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