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Mixtures of n-alkanols and their use

a technology of n-alkanols and n-alkanols, applied in the field of n-alkanols and their use, can solve the problem that relevant polymers are rather unsuitable for use where transparency is important, and achieve the effect of high transparency

Inactive Publication Date: 2014-06-19
BASF SE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The alkanol mixtures enhance processing efficiency and transparency of thermoplastic polymers, particularly PVC, making them suitable for transparent sheet-like products and hollow products without causing haze.

Problems solved by technology

Partially oxidized polyethylene wax generally, however, leads to haze in the processed polymer, making the relevant polymer rather unsuitable for uses where transparency is important.

Method used

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Examples

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Embodiment Construction

[0008]Accordingly, the use as defined in the introduction has been found of mixtures comprising a total of at least 50% by weight, preferably at least 85% by weight, of n-alkanols, selected from n-C24-C34 alkanols.

[0009]A process has also been found for the processing of thermoplastic polymers using mixtures which comprise at least 50% by weight, preferably at least 85% by weight, of n-alkanols selected from C24-C34 alkanols.

[0010]Data in % by weight here are always based on the total amount of mixture.

[0011]The abovementioned mixtures, which are also termed alkanol mixtures for the purposes of the present invention, are mixtures composed of at least 50% by weight, preferably at least 85% by weight, of n-alkanols, i.e. of primary unbranched aliphatic alcohols, where these have from 24 to 34 carbon atoms. The alkanol mixtures are preferably mainly composed of n-alkanols having an even number of carbon atoms.

[0012]In one preferred embodiment of the present invention, alkanol mixtures ...

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PUM

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Abstract

Use of mixtures, comprising a total of at least 50% by weight of n-alkanols, selected from n-C24-C34 alkanols, as additive in the processing of thermoplastic polymers.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional application of application Ser. No. 12 / 527,872 filed Aug. 20, 2009. Application Ser. No. 12 / 527,827 is a national stage application (under 35 U.S.C. §371) of PCT / EP2008 / 052066, filed Feb. 20, 2008, which claims benefit of European application 07003746.0, filed Feb. 23, 2007.BACKGROUND OF THE INVENTION[0002]The present invention relates to the use of mixtures, comprising a total of at least 50% by weight of n-alkanols, selected from n-C24-C34 alkanols, as additive in the processing of thermoplastic polymers.[0003]When thermoplastic polymers are processed, for example via mixing rolls, and in particular via extrusion with the aid of, for example, foil extruders, or single-screw extruders or twin-screw extruders, or planetary mills, various processing aids are added as a function of the polymer to be processed. For example, in the case of polypropylene it is usual to add antiblocking agents. In the case of po...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C08K5/05
CPCC08K5/05C08L27/06C08L2666/34
Inventor WEBER, DIETERMETZGER, ULRICH
Owner BASF SE