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Improved transparent polypropylene composition

A polypropylene composition and composition technology, applied in the direction of synthetic resin layered products, layered products, rubber layered products, etc., can solve problems such as low impact strength, and achieve the effect of high transparency and good mechanical properties

Inactive Publication Date: 2009-08-12
ボレアリステクノロジーオイ
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is well known that propylene copolymers with medium to high molecular weight rubbers generally exhibit a non-transparent appearance, while materials with low molecular weight rubbers have high transparency but low impact strength

Method used

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Embodiment Construction

[0045] Preparation of Random Copolymer (A)

[0046] The propylene random copolymer (A) can be prepared by one or more steps of polymerizing propylene and ethylene and / or α-olefins (such as bulk polymerization, gas phase polymerization, slurry polymerization, solution polymerization or combinations thereof) using conventional catalysts . Random copolymers can be prepared in a loop reactor or in a combination of a loop reactor and a gas phase reactor. These processes will be apparent to those skilled in the art.

[0047] A suitable catalyst for the polymerization of the propylene random copolymer is any stereospecific catalyst for the polymerization of propylene which is capable of polymerizing and copolymerizing propylene with the comonomer at a temperature of 40-110°C and a pressure of 10-100 bar. Ziegler-Natta catalysts and metallocene catalysts are suitable catalysts.

[0048] Those skilled in the art recognize the various possibilities for preparing propylene copolymers ...

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PUM

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Abstract

The present invention relates to a composition, in particular to a polypropylene composition, and articles thereof, having an optimal balance between mechanical properties and transparency and thus the composition is particular suitable for packaging applications.

Description

technical field [0001] The present invention relates to a polypropylene composition, articles comprising the polypropylene composition and the use of the polypropylene composition in the preparation of articles, the composition having good mechanical properties and high transparency. Background technique [0002] High transparency is one of the most frequently requested properties when applying polymers, especially in the field of packaging. The visual appeal of the packaging system to the customer is strongly dependent on this factor and at the same time plays a decisive role in the visual identity of the packaged product. All of these factors make transparency a major sales force. [0003] In addition, when applied to packaging, good mechanical properties such as impact strength and flexibility are required. Generally speaking, however, an improvement in mechanical properties leads to a deterioration in transparency, and vice versa. [0004] Therefore, this problem has ...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/16C08F297/08B32B27/32
CPCB32B25/08C08L2205/025C08L23/14C08L23/16B32B27/32C08L23/10C08L2205/02C08L2666/06C08J5/18B29C45/0055C08L2203/16C08L2201/10
Inventor 马库斯·加莱特内尔尼娜·阿克芒范嵩埃斯彭·奥姆德森克里斯泰勒·格赖因多里斯·马赫尔
Owner ボレアリステクノロジーオイ
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