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Light- and/or heat-stabilized composition

A composition and compound technology, applied in the field of fibers, filaments and/or products, and yarns, can solve problems such as loss of mechanical properties, discoloration, unevenness, etc., and achieve good mechanical properties, excellent dyeing durability, and good dyeing uniformity sexual effect

Inactive Publication Date: 2006-12-20
RHODIANYL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This instability manifests itself in degradation, loss of mechanical properties, discoloration and non-uniformity

Method used

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  • Light- and/or heat-stabilized composition
  • Light- and/or heat-stabilized composition
  • Light- and/or heat-stabilized composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Example 1: Polyamide 66 composition of the invention

[0065] A copolymer based on polyamide 66 was prepared from 1115 kg of a 52% by weight aqueous concentrated solution of hexammonium adipate, to which was added:

[0066] -58g manganese acetate tetrahydrate (label Aldrich: 22,100-7);

[0067] - 20 g of Rhodorsil 411 antifoam;

[0068] - 12.9 kg of caprolactam;

[0069] - 780 g of Nylostab S-EED by Clariant;

[0070] - 257g of adipic acid; and

[0071] -8.8kg uncoated TiO 2 (Hombitan LWS in Sachtleben).

[0072] The polyamide is produced according to a standard method comprising a solution concentration step in an evaporator and a polycondensation step in a stirred autoclave reactor with a static pressure of 18.5 bar at a static pressure of about 100 minutes and a final temperature of 267°C. Distillation stage, depressurization stage from 18.5 bar to 1 bar of about 25 minutes and final temperature of 269°C, and finishing stage of about 26 minutes and final temper...

Embodiment 4

[0090] Example 4: Polyamide 66 composition

[0091] A comparative polyamide 4C was obtained in the same manner from the following base material: A copolymer based on polyamide 66 was prepared from 1115 kg of a 52% by weight aqueous concentrated solution of hexamethylene diammonium adipate, to which was added:

[0092]- 20 g of Rhodorsil 411 antifoam;

[0093] - 12.9 kg of caprolactam;

[0094] - 780g of Clariant's Nylostab S-EED

[0095] - 257g of adipic acid; and

[0096] -8.8kg TiO coated with silica and alumina 2 (Hombitan LOCR-SM from Sachtleben).

[0097] A copolymer based on polyamide 66 containing 2.5% by weight of polyamide 6 units and 1.7% by weight of titanium dioxide is obtained.

Embodiment 5

[0098] Example 5: Spinning and knitting of polyamide compositions

[0099] The polyamide composition obtained in the preceding examples was spun at a take-up speed of 4200 m / min, followed by drawing at a take-up speed of 1070 m / min. The count of the yarn obtained was 101 dtex per 68 filaments before drawing and 82 dtex after drawing.

[0100] For Polyamide 1: The tenacity of the POY yarn before stretching was 34.8 cN / tex and the elongation at break was 75.9%. The tenacity of the drawn yarn was 43.9 cN / tex, and the elongation at break was 43.3%.

[0101] For comparative polyamide 2C: The tenacity of the POY yarn before stretching was 34.5 cN / tex and the elongation at break was 74.2%. The tenacity of the drawn yarn was 43.3 cN / tex, and the elongation at break was 43.9%.

[0102] For comparative polyamide 3C: The tenacity of the POY yarn before stretching was 33.9 cN / tex and the elongation at break was 77%. The tenacity of the drawn yarn was 42.1 cN / tex, and the elongation at...

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Abstract

The present invention relates to a composition based on a light- and / or heat-stabilized polyamide, comprising at least one stabilizer with at least one hindered amine function. Said invention also relates to yarns, fibres, filaments and / or articles obtained from said composition.

Description

field of invention [0001] The present invention relates to a light and / or thermally stabilized polyamide-based composition comprising at least one stabilizer having at least one hindered amine functionality. The invention also relates to yarns, fibres, filaments and / or articles obtained from such compositions. Background technique [0002] Polyamide is a synthetic polymer widely used in the manufacture of yarns, fibers and filaments. These yarns, fibers and filaments are then used to make textile surfaces, especially dyed textile surfaces. [0003] Polyamides deteriorate when subjected to external conditions or factors such as UV radiation, heat and harsh weather. This deterioration may also be caused by the heat used during its production and / or its shaping. This instability manifests itself in degradation, loss of mechanical properties, discoloration and non-uniformity. These issues become critical factors in many applications. [0004] In order to increase the stabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K13/02C08L77/00C08K5/17C08K5/098C08K3/22C08K5/3435D01F1/10D01F6/60
CPCC08K5/098D01F6/60C08K3/22C08K5/3435D01F1/10C08K2003/2241C08K5/17C08L77/00C08K13/02C08L79/02
Inventor V·博塞内克T·沙博诺
Owner RHODIANYL
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