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Injection molded articles based on propylene homopolymer

A technology of injection molding and homopolymer, applied in the field of new injection molding products based on propylene homopolymer, which can solve the problems of bubble formation and warpage

Active Publication Date: 2018-07-27
BOREALIS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The problem with this grade is that in injection molding of small items such as pipette tips, rapid crystallization occurs, thereby causing bubble formation and warping of the final part

Method used

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  • Injection molded articles based on propylene homopolymer
  • Injection molded articles based on propylene homopolymer
  • Injection molded articles based on propylene homopolymer

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Embodiment Construction

[0047] The present invention will now be described in more detail.

[0048] The present invention relates to an injection molded article comprising a specific homopolymer as defined above and described in more detail below. The shaped article may be any shaped article. The term injection molded article is understood as known in the art. Reference is made in particular to "Propylene Handbook", Nello Pasquini, 2nd Edition (2005), pages 422-443.

[0049] Preferably, the injection molded article according to the invention is any one for healthcare applications.

[0050] Still more preferably, the injection molded article has small dimensions; especially the injection molded article has small dimensions and is used for healthcare applications. An injection molded article of small size is an article having a length in its largest dimension of not more than 150 mm, such as not more than 130 mm, preferably in the range of 0.5 to 2.0 mm, more preferably in the range of 0.1 to 1.5 mm...

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Abstract

Injection moulded articles for healthcare applications based on propylene homopolymers.

Description

technical field [0001] The present invention relates to a novel injection molded article based on a propylene homopolymer with a high meso sequence length (or intermediate sequence length). Background technique [0002] Polypropylene is used in many applications. The properties of polypropylene must be tailored accordingly according to its end application. For example, some end applications require very stiff materials. There is a strong trend in healthcare for high flow grades to achieve high cavity counts and faster cycle times. The problem with this grade is that in injection molding of small items such as pipette tips, rapid crystallization occurs, thereby leading to bubble formation and warping of the final part. Contents of the invention [0003] It was therefore an object of the present invention to provide polymers which enable a person skilled in the art to produce rigid injection molded articles in short cycle times, wherein the final part is not affected by b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08F110/06
CPCC08L23/12C08L2314/02C08L2205/025B29C45/0001C08F110/06C08F2500/12C08F2500/15C08F4/6492C08F4/651B29K2023/12B29K2105/0094C08J5/00C08J2323/12
Inventor 克劳斯·贝恩赖特纳马蒂纳·桑德霍泽詹姆斯·斯特恩乔安妮·贝尔肖
Owner BOREALIS AG
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