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Films with low ocs gel index

A linear polypropylene, l-pp technology, applied in the field of polypropylene composition, can solve the problem of not specifying the matrix polymer, etc.

Active Publication Date: 2017-03-29
BOREALIS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patent does not specify the effect of the type of matrix polymer and the polypropylene powder used to prepare the additive mixture on the quality of the HMS, especially the quality of the OCS film as expressed by the gel index

Method used

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  • Films with low ocs gel index
  • Films with low ocs gel index
  • Films with low ocs gel index

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0182] Example

[0183] A. Measurement method

[0184] Unless specifically limited, the definitions and measurement methods of the following terms are applicable to the above general description of the present invention and the following examples.

[0185] Comonomer content in polypropylene

[0186] The content of comonomer is basically assigned by quantitative 13 Quantitative Fourier Transform Infrared Spectroscopy (FTIR) calibrated by C nuclear magnetic resonance (NMR) spectroscopy is measured by a method well known in the art. The film was pressed to a thickness of 250 μm and the spectrum was recorded in transmission mode.

[0187] Specifically, the ethylene content of polypropylene ethylene copolymer uses 720-722cm -1 And 730-733cm -1 Baseline-corrected peak area determination of the quantitative band found at the location. Propylene-1-butene-copolymer at 767cm -1 Evaluation. Quantitative results are obtained based on the reference film thickness.

[0188] Melting temperature (T m...

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PUM

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Abstract

A method of providing a polypropylene composition comprising branched polypropylene, wherein the polypropylene having a melt flow rate MFR2 (230° C.) greater than 1.0 g / 10 min is combined with a thermally decomposing free radical former and optionally difunctional unsaturation The monomers are reacted whereby the branched polypropylene is obtained, wherein the polypropylene composition has an F30 melt strength greater than 5.8 cN and a v30 melt extensibility greater than 200 mm / s.

Description

Technical field [0001] The present invention relates to providing a polypropylene composition with high melt strength and low OCS gel index. In addition, the present invention also relates to a corresponding polypropylene composition with low OCS gel index and high melt strength (HMS). Background technique [0002] High melt strength polypropylene (HMS-PP) compositions are well known in the art. However, a challenge in existing HMS-PP is its varying film quality. The quality of the film is indicated by the gel index, which is measured with the OCS gel inspection tool described in WO 2008 / 022802. [0003] In addition, as known in the art, additives are usually added to plastic materials to improve their performance. Examples of typical additives are, for example, antioxidants or pigments. These additives are usually added to the plastic matrix material in the form of an additive mixture in which the additives are mixed into a small amount of polymer powder. Additive mixtures ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/10C08L23/12C08L23/14C08F255/02C08F210/06C08F210/16C08F2/48C08F2/52C08F2/54C08F10/06
CPCC08F255/02C08J5/18C08L51/06C08J2351/06C08L2203/16C08F236/06C08F210/06C08F210/16C08F2/48C08F2/52C08F2/54C08F10/06C08L23/12C08L23/142C08L2023/42C08L2205/025C08L2207/07C08K5/11C08K5/52C08F110/06C08F2500/09C08F2500/11C08F2500/26C08F2500/12C08K3/26C08F2500/06
Inventor 卡佳·克里姆克赫尔曼·布劳恩
Owner BOREALIS AG