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Flame-retardant polyester fiber and method for producing same

A technology of polyester fiber and flame-retardant polyester, which is applied in the direction of flame-retardant fiber, fiber treatment, fiber type, etc., to achieve the effect of maintaining washing resistance

Inactive Publication Date: 2008-02-27
DIAHACHI CHEMICAL INDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, when polyester fibers are used in clothes etc., phosphorus compounds are easily removed from the fibers by washing

Method used

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  • Flame-retardant polyester fiber and method for producing same
  • Flame-retardant polyester fiber and method for producing same
  • Flame-retardant polyester fiber and method for producing same

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preparation example Construction

[0056] More specifically, the preparation method of the flame-retardant polyester fiber of the present invention comprises the following steps: impregnating the polyester fiber with a flame-retardant liquid containing the phosphorus compound (I), that is, making the phosphorus compound and the polyester fiber contact (contacting step); after the dipping treatment or simultaneously with the dipping treatment, the polyester fiber is subjected to heat treatment under normal pressure or pressure, that is, heat treatment under normal pressure or pressure ( heat treatment step); and, thereby imparting flame retardancy to polyester fibers.

[0057] Therefore, the preparation method of the flame-retardant polyester fiber of the present invention is a post-treatment to impart flame retardancy to the polyester fiber, which is different from a pre-treatment for imparting flame retardancy to the polyester material itself constituting the polyester fiber.

[0058] Preferably, the flame ret...

Embodiment

[0100] The present invention is described in detail by means of the following synthesis examples, examples and comparative examples, which should not be construed as limiting the scope of the present invention.

Synthetic example 1

[0101] Synthesis Example 1 (Synthesis of Phosphorus Compound 1)

[0102] 170.0 g (1.0 mol) of 2-phenylphenol, 307.0 g (2.0 mol) of phosphorus oxychloride and 0.9 g of anhydrous magnesium chloride were added to a 1-liter four-necked flask equipped with a stirrer, a condenser and a thermometer. Under stirring in a nitrogen atmosphere, the mixed solution was heated for 2 hours to raise the temperature to 120°C, and then stirred at the same temperature (120°C) for 1 hour. Next, depressurization was started at the same temperature (120° C.) and excess phosphorus oxychloride was recovered until the pressure reached about 1.3 kPa. The reaction mixture was cooled to room temperature, and 188.0 g (2.0 mol) of phenol and 30 g of toluene were added. Then, under stirring in a nitrogen atmosphere, the temperature was raised to 150° C. by heating for 2 hours, and reacted at the same temperature (150° C.) under reduced pressure (about 6.5 kPa) for 2 hours. After completing the reaction, th...

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Abstract

Disclosed is a method for producing a flame-retardant polyester fiber wherein a polyester fiber is impregnated with a flame retardance-imparting liquid containing, as a flame retardant, a phosphorus compound represented by the formula (I) below, and the polyester fiber is thermally treated after or simultaneously with the impregnation at atmospheric pressure or under pressure, so that the polyester fiber is imparted with flame retardance. (In the formula, Ar represents a phenyl or naphthyl group which may be substituted with a C1-4 alkyl group, and n represents an integer of 1-3.

Description

technical field [0001] The invention relates to a flame-retardant polyester fiber and a preparation method thereof. The flame-retardant polyester fiber is obtained by fixing a non-halogen organic phosphorus compound to the fiber through post-treatment, and has excellent light resistance, abrasion resistance, and flame retardancy , heat resistance, hydrolysis resistance and washing resistance. Background technique [0002] Polyester fibers are used in various fields including clothes, interior goods, wadding, non-woven fabrics, industrial materials, etc. due to their excellent mechanical properties and processability. For example, polyester fiber products can be used as interior materials for hotels, hospitals, movie theaters, and the like. However, since polyester fiber products are flammable, the above-mentioned application is strictly regulated by Fire Defense Law in order to minimize damage due to ignition by matches, cigarettes, and the like. In recent years, due to in...

Claims

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Application Information

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IPC IPC(8): D06M13/292D06M13/52D06M101/32
CPCC09K21/12D06M13/292D06M2200/30D06M13/52D06M2101/32
Inventor 田中良典增井佑纪
Owner DIAHACHI CHEMICAL INDUSTRY CO LTD
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