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Exterior automotive article with reduced paintability failure

A product and automobile technology, applied in the field of automobile exterior products, can solve the problem of high wear rate

Active Publication Date: 2013-11-20
BOREALIS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such materials have limited paint adhesion and thus wear rates that are too high

Method used

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  • Exterior automotive article with reduced paintability failure
  • Exterior automotive article with reduced paintability failure
  • Exterior automotive article with reduced paintability failure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The automotive (exterior) article is defined in more detail below. All information given below can be applied to the composition (C), polypropylene (PP), elastomeric copolymers mentioned above and discussed in the case of using polypropylene (PP) for reducing the coating failure rate of shaped articles material (EC), and filler (F).

[0027] The term "automotive article" used in the present invention means that the article is a shaped three-dimensional article for the interior or exterior of an automobile. Typical automotive products are bumpers, side panels, step assists, body panels, spoilers, instrument panels, interior panels, and the like. The term "exterior" means that the article is not part of the interior of the vehicle, but rather the exterior of the vehicle. Accordingly, preferred automotive exterior articles are selected from the group consisting of bumpers, side trims, floor panels, body panels and spoilers.

[0028] Preferably, the automotive article (i...

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PUM

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Abstract

Exterior automotive article comprising a composition comprising a polypropylene, an elastomeric copolymer, and a mineral filler, wherein said polypropylene (PP) has a comonomer content of equal or below 1.0 wt.-%, the comonomers are ethylene and / or at least one C4 to C20 alpha-olefin, and(2,1)erythro regiodefects of equal or more than 0.4 mol.-%, said elastomeric copolymer (EC) comprises units derived from ethylene and at least one C3 to C10 alpha-olefin, said composition (C) has a melt flow rate MFR2 (230 DEG C) in the range of 5 to 80 g / lOmin.

Description

technical field [0001] The present invention relates to a new automotive exterior article and the use of specific polypropylenes for automotive exterior articles to reduce paintability failure. Background technique [0002] Polypropylene is the material of choice in many applications because it can be tailored to the specific purpose required. For example, heterophasic polypropylenes are widely used in the automotive industry (eg, in bumper applications) because of the combination of good stiffness with appropriate impact strength properties. Heterophasic polypropylene comprises a polypropylene matrix in which is dispersed an amorphous phase. The amorphous phase comprises elastomers such as linear low density polyethylene (LLDPE), or propylene copolymer rubbers such as ethylene propylene rubber (EPR) or ethylene propylene diene monomer polymer (EPDM). In the case of propylene copolymer rubbers, the heterophasic polypropylene may additionally contain crystalline polyethylen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/06C08L23/10
CPCC08F210/06C08F10/06C08L2314/06C08L2308/00C08L23/08C08L23/12C08F4/65912C08F4/65916C08F110/06C08L23/0815C08F4/65927C08F2500/12C08F2500/30C08F2500/33C08F2500/34C08F2500/35C08F2500/38C08F2500/15C08F210/16C08F2500/03C08F2500/09C08F210/12C08F210/08
Inventor 迈克尔·泰宁戈克劳斯·莱德勒
Owner BOREALIS AG