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Thin film of outer layer comprising polyamide composition

A polyamide composition, polyamide technology, applied in the field of films for decorative moldings, capable of solving problems such as unsatisfactory gloss and insufficient scratch resistance

Inactive Publication Date: 2007-05-02
DEGUSSA AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of polyamide, e.g. PA11 or PA12, also has insufficient scratch resistance
Their gloss is also unsatisfactory

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0064] Preparation of raw polyamide:

[0065] 1. Preparation of PA MXD6

[0066] Fill the following raw materials into the 100L polycondensation reactor:

[0067] 14.964kg m-xylylenediamine

[0068] 16.058kg adipic acid

[0069] 19.618kg deionized water

[0070] 3.074 g of a 50% aqueous solution of hypophosphorous acid.

[0071] These raw materials were melted under a nitrogen atmosphere and heated with stirring in a sealed autoclave to about 180° C., whereupon the internal pressure became about 20 bar. This internal pressure was maintained for 2 h; subsequently, the melt was further heated to 280° C. with continuous depressurization to atmospheric pressure. Subsequently, nitrogen was blown over the melt for about 1 h while maintaining the temperature at 280° C., until the required torque was reached. Subsequently, the melt is discharged by means of a gear pump and strand-cut. The slices were dried at 80°C for 16 h under vacuum generated by a water pump.

[0072] Yield...

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PUM

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Abstract

A decorative film having an outer layer containing a polyamide composition with the following components: a) from 50 to 100 parts by weight of polyamide prepared from: alpha) from 70 to 100 mol % of diamine selected from m-xylylenediamine, p-xylylenediamine and mixtures thereof, beta) from 0 to 30 mol % of other diamines having from 6 to 14 carbon atoms, and gamma) from 70 to 100 mol % of aliphatic dicarboxylic acids having from 10 to 18 carbon atoms and delta) from 0 to 30 mol % of other dicarboxylic acids having from 6 to 9 carbon atoms, and b) from 0 to 50 parts by weight of another polyamide, where a) and b) total 100, having good chemicals resistance, good stress cracking resistance, improved scratch resistance, and improved gloss. Typical application are vehicle manufacture and use as surface lacquer of ski and sled.

Description

technical field [0001] The invention relates to a film comprising a layer of polyamide suitable for decorating moldings. Background technique [0002] Molding compositions composed of such polyamides have excellent properties for the production of a wide variety of consumer articles. The combination of these properties with transparent features is of particular interest and thus opens up the possibility of producing a transparent film which can be used for the finishing or decoration of surfaces. The materials that can be used here are especially polyamides with longer chain aliphatic monomer components, because of their special impact resistance, even at low temperatures, good resistance to chemical attack and good enough resistance to scratches and enough shine. Examples of this are PA12, PA11, PA1010, PA1012 or blends thereof. [0003] These properties are suitable for use, for example, as outer layer materials in the field of skis and snowboards. Examples can be foun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08J5/18B32B27/34B32B33/00B32B37/02B32B37/12B29C47/00B29C47/04
CPCB32B27/34Y10T428/31725C08L77/00C08L77/06C08G69/265C08L2205/02C08L2666/20B32B27/08C08G69/02C08J5/18B32B2309/105B32B37/10B32B2451/00B32B25/08B32B2307/718B32B37/12B32B25/042B32B2605/003B32B2605/08B32B37/153B32B7/12B32B2377/00
Inventor R·沃斯彻F·-E·鲍曼B·库丁M·韦尔普茨P·克莱德勒H·哈杰
Owner DEGUSSA AG
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