Soft polypropylene with improved optical properties

A technology of propylene copolymers and polymers, which is applied in the field of polymer compositions and can solve problems such as damage to optical properties and mechanical properties

Active Publication Date: 2016-06-22
BOREALIS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typically optical properties as well as mechanical properties are undesirably compromised

Method used

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  • Soft polypropylene with improved optical properties
  • Soft polypropylene with improved optical properties
  • Soft polypropylene with improved optical properties

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Experimental program
Comparison scheme
Effect test

Embodiment

[0269] 1. Test method

[0270] Unless otherwise stated, the following definitions of terms and assay methods apply to the above general description of the invention as well as to the following examples.

[0271] Calculation of the comonomer content of the second propylene copolymer fraction (R-PP2):

[0272] C ( PP ) - w ( PP 1 ) x C ( PP 1 ) w ( PP 2 ) = C ( PP 2 ) - - - ( I ) ...

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Abstract

A polymer composition comprising a propylene copolymer and a styrenic elastomer.

Description

technical field [0001] The present invention relates to a polymer composition which can be used in the preparation of sterile containers such as retort pouches or medical packaging (for example for intravenous infusion). Background technique [0002] There is an increasing trend in the use of plastic containers in the food packaging industry, especially bags containing sterilized or pre-cooked foods. Retort pouches offer many advantages over rigid metal packaging, such as fast cooking / sterilizing times, less shelf storage space, easy handling, improved food taste, and more. A typical bag has a multi-layer structure of polyolefin such as polyethylene or polypropylene, adhesive, barrier layer and outer layer. Polyolefin materials are desired to impart rigidity and high impact strength to the final packaging material. [0003] The same trend, the growing use of polyolefin materials, is also occurring in the medical packaging industry. Furthermore, the polymer should impart s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08J5/18B32B27/32
CPCC08L23/14C08L23/16C08L2205/025C08L2205/02C08L2203/16C08L2203/02C08L2201/08C08L2207/02C08L53/02C08J5/18C08J2323/14Y10T428/1397C08L53/00
Inventor 马库斯·加莱特纳马丁纳·桑德霍尔策尔克劳斯·贝恩赖特
Owner BOREALIS AG
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