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Engineered polyolefin materials with enhanced surface durability and methods of making same

A polyolefin and propylene-based polyolefin technology, applied in the field of preparation of polyolefin blends, can solve problems such as stress whitening, non-uniform surface properties, and difficulty in achieving uniform dispersion of particles

Inactive Publication Date: 2005-06-08
SOLVAY SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it is difficult to achieve a uniform dispersion of these particles, and this leads to non-uniform surface properties in such products
The use of these particles also tends to impair other desirable physical properties of the polyolefin, resulting in loss of impact strength and / or toughness
Loosening of these particles from the polyolefin system also leads to undesired stress whitening

Method used

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  • Engineered polyolefin materials with enhanced surface durability and methods of making same
  • Engineered polyolefin materials with enhanced surface durability and methods of making same

Examples

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Embodiment

[0102] These and other aspects of the invention can be more fully understood by reference to the following examples, which are only illustrations of preferred embodiments of the invention and should not be construed as limiting the invention.

[0103] Examples of prior art blends are included in Controls 1-4 shown in Table 1. Representative compositions of the blends of the present invention, and their physical properties, are found in Examples 1-5, also shown in Table 1. These data show that polyolefin blends with a wide range of physical properties can be prepared using the compositions of the present invention. The compositions of the present invention possess excellent scratch and mar resistance properties and good impact strength.

[0104] Scratched pointer serial number

1

2

3

4

5

20.0N

15.0N

10.0N

5.0N

2.0N

[0105] scratch level

illustrate

1

no visible scratches

1.5

Gl...

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Abstract

A polyolefin blend including a propylene-based polyolefin-metal salt that is a reaction product of a propylene-containing polymer and a first organic monomer including a hydrophilic moiety that is at least partially neutralized with a metal ion, and an ethylene-based polyolefin-metal salt that is a reaction product of an ethylene-containing polymer and a second organic monomer including a hydrophilic moiety that is at least partially neutralized with a metal ion. Optionally, the blend includes a copolymer of ethylene and an alpha-olefin, and optionally one or more diene(s); a thermoplastic elastomer, such as an olefinic copolymer with styrene; a copolymer of ethylene, at least one alpha-olefin, and / or a monomer with a hydrophilic moiety. Also included are methods of preparing such blends, as well as the resultant articles.

Description

field of invention [0001] The present invention relates to polyolefin blends possessing higher physical properties including enhanced scratch resistance, stiffness and toughness. The invention also relates to methods of making such polyolefin blends, and articles made from such polyolefin blends. Background technique [0002] In many applications, such as many in the automotive industry, polymeric materials that exhibit good levels of scratch resistance while possessing stiffness and impact toughness are desirable. But these properties tend to differ so that efforts to increase one of them will often lead to deterioration of the other or both of the other properties. [0003] Polypropylene blends are suitable for a wide variety of applications due to their strength, weatherability and processing properties. Although highly crystalline polypropylene exhibits good scratch and mar resistance properties, it does not possess the impact toughness required in many important appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/00C08L23/00C08L23/08C08L23/10C08L51/06C08L53/00
CPCC08L23/00C08L23/0815C08L23/0869C08L23/0876C08L23/10C08L51/06C08L53/00C08L2205/02C08L2666/04C08L2666/24C08L43/00C08L53/02C08L23/16
Inventor R·丁S·斯里尼瓦桑E·K·劳
Owner SOLVAY SA