Polyester Fiber

Abstract

A polyester fiber having improved dripping resistance during burning can be provided by a polyester fiber made of a polyester composition containing a layer compound treated with at least one kind selected from a polyether compound and a silane compound, and a thermoplastic polyester resin. The present invention also relates to a polyester fiber made of a polyester composition comprising a layer compound treated with a water-soluble or water-miscible phosphorus flame retardant, and a thermoplastic polyester resin.

1 . A polyester artificial hair made of a polyester composition containing a layer compound treated with at least one kind selected from a polyether compound and a silane compound, and a thermoplastic polyester resin  
   
   
       2 . The polyester artificial hair according to  claim 1 , which further contains a phosphorus flame retardant.  
   
   
       3 . The polyester artificial hair according to  claim 1 , wherein the thermoplastic polyester resin is a thermoplastic copolymer polyester resin copolymerized with a reactive phosphorus flame retardant.  
   
   
       4 . The polyester artificial hair according to  claim 1 , wherein the polyether compound has a cyclic hydrocarbon group.  
   
   
       5 . The polyester artificial hair according to  claim 4 , wherein the polyether compound is represented by the following general formula (1):  
     
       
         
         
             
             
         
       
     
     wherein -A- represents —O—, —S—, —SO—, —SO 2 —, —CO—, an alkylene group having 1 to 20 carbon atoms, or an alkylidene group having 6 to 20 carbon atoms; any of R 1  to R 8  represent a hydrogen atom, a halogen atom, or a monovalent hydrocarbon group having 1 to 5 carbon atoms; any of R 9  and R 10  represent a divalent hydrocarbon group having 1 to 5 carbon atoms; any of R 11  and R 12  represent a hydrogen atom or a monovalent hydrocarbon group having 1 to 20 carbon atoms, and may be the same or different; and m and n represent a repeating unit number of an oxyalkylene unit and satisfy the expression: 2≦m+n≦50.  
   
   
       6 . The polyester artificial hair according to  claim 1 , wherein the silane compound is represented by the following general formula (2):  
       YnSiX 4-n    (2)  
     wherein n represents an integer of 0 to 3; Y represents a hydrocarbon group having 1 to 25 carbon atoms, or an organic functional group composed of a hydrocarbon group having 1 to 25 carbon atoms and a substituent; X represents a hydrolyzable group and/or a hydroxyl group; and n Y and (4-n)X may be the same or different.  
   
   
       7 . The polyester artificial hair according to  claim 1 , wherein an average layer thickness of the layer compound is 500 Å or less.  
   
   
       8 . The polyester artificial hair according to  claim 1 , wherein a maximum layer thickness of the layer compound is 2000 Å or less.  
   
   
       9 . The polyester artificial hair according to  claim 1 , wherein an average aspect ratio (ratio of layer length to layer thickness) of the layer compound in the resin composition is from 10 to 300.  
   
   
       10 . The polyester artificial hair according to  claim 1 , wherein the layer compound is a layer silicate.  
   
   
       11 . The polyester artificial hair according to  claim 2 , wherein the phosphorus flame retardant is at least one kind of a compound selected from the group consisting of a phosphate compound, a phosphonate compound, a phosphinate compound, a phosphine oxide compound, a phosphonite compound, a phosphinite compound, and a phosphine compound.  
   
   
       12 . A polyester artificial hair made of a polyester composition comprising a layer compound treated with a water-soluble or water-miscible phosphorus flame retardant, and a thermoplastic polyester resin.  
   
   
       13 . The polyester artificial hair according to  claim 12 , wherein an average layer thickness of the layer compound is 500 Å or less.  
   
   
       14 . The polyester artificial hair according to  claim 12 , wherein a maximum layer thickness of the layer compound is 2000 Å or less.  
   
   
       15 . The polyester artificial hair according to  claim 12 , wherein an average aspect ratio (ratio of layer length to layer thickness) of the layer compound in the resin composition is from 10 to 300.  
   
   
       16 . The polyester artificial hair according to  claim 12 , wherein the layer compound is a layer silicate.  
   
   
       17 . The polyester artificial hair according to  claim 12 , wherein the water-soluble or water-miscible phosphorus flame retardant is at least one kind of a compound selected from the group consisting of diethyl-N,N-bis(2-hydroxyethyl)aminomethylphosphonate, tris(hydroxyalkyl)phosphine, tris(hydroxyalkyl)phosphine oxides, alkyl-bis(hydroxyalkyl)phosphine oxides, alkyl-bis(hydroxycarbonylalkyl)phosphine oxides, dipolyoxyalkylenehydroxyalkyl phosphate, alkyl(hydroxycarbonylalkyl)phosphinic acids, and condensed phosphate esters.  
   
   
       18 . A process for producing polyester artificial hair comprising: 
 (1) preparing a layer compound treated with at least one kind selected from a polyether compound and a silane compound,    (2) preparing a polyester composition comprising the layer compound prepared by step (1) and a thermoplastic polyester resin,    (3) melt spinning the polyester composition prepared by step (2).    
   
   
       19 . A process for producing polyester artificial hair comprising: 
 (1) preparing a layer compound treated with a water-soluble or water-miscible phosphorus flame retardant,    (2) preparing a polyester composition comprising the layer compound prepared by step (1) and a thermoplastic polyester resin,    (3) melt spinning the polyester composition prepared by step (2).